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This paper proposed an acoustic model of ultrasonic transmission with the dry tribological interface considering the geometric dispersion effect and the boundary effect. Poisson's ratio is introduced into the Hamiltonian expression, which establishes the energy propagation characteristics of tribological interface. Based on microwave theory, the boundary effect of ultrasonic propagation is analyzed, which simulates the influence of impedance mismatch at the boundary. The feasibility of the proposed model for interface stiffness measurement was validated experimentally. Compared with the classical model, the proposed model has higher accuracy. Finally, this paper discussed influence of boundary parameters. It is theoretically explained that the transmission method is more sensitive than the reflection method. This study provides a basis of the interface stiffness measurement.
Bo Yuan; Qingchao Sun; Xinxu Wang; Xiaokai Mu; Yunlong Wang; Wei Sun. A novel acoustic model for interface stiffness measurement of dry tribological interface considering geometric dispersion effect and boundary effect. Tribology International 2021, 162, 107140 .
AMA StyleBo Yuan, Qingchao Sun, Xinxu Wang, Xiaokai Mu, Yunlong Wang, Wei Sun. A novel acoustic model for interface stiffness measurement of dry tribological interface considering geometric dispersion effect and boundary effect. Tribology International. 2021; 162 ():107140.
Chicago/Turabian StyleBo Yuan; Qingchao Sun; Xinxu Wang; Xiaokai Mu; Yunlong Wang; Wei Sun. 2021. "A novel acoustic model for interface stiffness measurement of dry tribological interface considering geometric dispersion effect and boundary effect." Tribology International 162, no. : 107140.
In order to accurately and effectively obtain the contact performance of the mating surface under the material surface topography characteristics, a numerical simulation method of rough surface based on the real topography characteristics and a multi-scale hierarchical algorithm of contact performance is studied in this paper. Firstly, the surface topography information of materials processed by different methods was obtained and characterized by a measuring equipment; Secondly, a non-Gaussian model considering kurtosis and skewness was established by Johnson transform based on Gaussian theory, and a rough surface digital simulation method based on real surface topography was formed; Thirdly, a multi-scale hierarchical algorithm is given to calculate the contact performance of different mating surfaces; Finally, taking the aeroengine rotor as the object, the non-Gaussian simulation method was used to simulate the mating surfaces with different topographies, and the multi-scale hierarchical algorithm was used to calculate the contact performance of different mating surfaces. Analysis results showed that the normal contact stiffness and elastic–plastic contact area between the mating surfaces of assembly 1 and assembly 2 are quite different, which further verifies the feasibility of the method. The contents of this paper allow to perform the fast and effective calculation of the mechanical properties of the mating surface, and provide a certain analysis basis for improving the surface microtopography characteristics of materials and the product performance.
Yunlong Wang; Xiaokai Mu; Cong Yue; Wei Sun; Chong Liu; Qingchao Sun. A High Precision Modeling Technology of Material Surface Microtopography and Its Influence on Interface Mechanical Properties. Materials 2021, 14, 2914 .
AMA StyleYunlong Wang, Xiaokai Mu, Cong Yue, Wei Sun, Chong Liu, Qingchao Sun. A High Precision Modeling Technology of Material Surface Microtopography and Its Influence on Interface Mechanical Properties. Materials. 2021; 14 (11):2914.
Chicago/Turabian StyleYunlong Wang; Xiaokai Mu; Cong Yue; Wei Sun; Chong Liu; Qingchao Sun. 2021. "A High Precision Modeling Technology of Material Surface Microtopography and Its Influence on Interface Mechanical Properties." Materials 14, no. 11: 2914.
The complex micro-slip phenomenon of the contact interface will lead to the nonlinear stiffness of the connection structure, as well as the structural damping and energy dissipation. As the most important connection structure of the combination rotor, the mechanical properties of bolted flange joint interface are needed in the dynamic analysis of the combined rotor. Therefore, it is urgent to model and test the friction contact interface in the nonlinear dynamic analysis of rotor. In this paper, two sets of mechanical characteristics test system were built to test the dynamic parameters of tangential and bending directions of the bolted flange joint interface. Then, the mechanical behavior and the change regularities of dynamics parameters were studied under different external excitation, bolt distribution and tightening torque. The results show that once the bolt preload is above the rated torque, stiffness softening behavior is not significant; and then the tangential stiffness of the joint interface tends to be stable, with the variation range of 8.08∼8.96e8 N/m; the equivalent bending stiffness coefficient is about 3.38∼3.83e6 N·m/rad. With the decrease of bolt preload, the external excitation and the number of bolts have a significant effect on the stiffness reduction of the joint. Finally, the change interval of the dynamics parameters of the interface obtained by the experiment provide basis for the uncertainty dynamic analysis and optimization of the rotor.
Tao Li; Dongjian Yang; Binbin Zhao; Qingchao Sun; Junzhou Huo; Wei Sun. Measured and investigated nonlinear dynamics parameters on bolted flange joints of combined rotor. Journal of Mechanical Science and Technology 2021, 35, 1841 -1850.
AMA StyleTao Li, Dongjian Yang, Binbin Zhao, Qingchao Sun, Junzhou Huo, Wei Sun. Measured and investigated nonlinear dynamics parameters on bolted flange joints of combined rotor. Journal of Mechanical Science and Technology. 2021; 35 (5):1841-1850.
Chicago/Turabian StyleTao Li; Dongjian Yang; Binbin Zhao; Qingchao Sun; Junzhou Huo; Wei Sun. 2021. "Measured and investigated nonlinear dynamics parameters on bolted flange joints of combined rotor." Journal of Mechanical Science and Technology 35, no. 5: 1841-1850.
Geometrical deviations in the manufacture and assembly of mechanical products often result in non-parallel bearing surfaces in the bolted joint. To reveal the influence of the non-parallel bearing surface on the loosening of the bolted joint, the paper proposes a non-parallel bearing surface anti-loosening analysis model, revealing the anti-loosening mechanism of the non-parallel bearing surface, and found that the non-parallel bearing surface will introduce additional contact pressure and contact friction torque. Within a certain range, the contact pressure and the contact friction torque increase as the inclination angle of the non-parallel bearing surface increases, and the thread anti-loosening performance is improved. A parametric finite element model is further established to verify the existence of additional contact pressure and contact friction torque, and the slip factor is introduced to evaluate the loosening. Finally, the anti-loosening analysis model and the finite element model are validated by the loosening experiment of the non-parallel bearing surface. The research result provides a new idea for the anti-loosening control of bolted joints.
Bin Yang; Qingchao Sun; Qingyuan Lin; Lintao Wang; Xianlian Zhang; Yue Ma. Influence mechanism of bolted joint with geometric irregularity bearing surface on anti-loosening performance. International Journal of Pressure Vessels and Piping 2021, 191, 104364 .
AMA StyleBin Yang, Qingchao Sun, Qingyuan Lin, Lintao Wang, Xianlian Zhang, Yue Ma. Influence mechanism of bolted joint with geometric irregularity bearing surface on anti-loosening performance. International Journal of Pressure Vessels and Piping. 2021; 191 ():104364.
Chicago/Turabian StyleBin Yang; Qingchao Sun; Qingyuan Lin; Lintao Wang; Xianlian Zhang; Yue Ma. 2021. "Influence mechanism of bolted joint with geometric irregularity bearing surface on anti-loosening performance." International Journal of Pressure Vessels and Piping 191, no. : 104364.
The paper aims to study the accurate modeling of the assembly interface and the update of the digital twin model to keep the consistency of physical and digital information. It purposes a construction method of the digital twin model of assembly interface contact characteristics, based on the interface virtual thin-layer element with nonuniform and replaceable attribute parameters. Firstly, the general framework of the digital twin model of assembly interface contact characteristics is given. Secondly, the typical assembly interface characteristics are analyzed. Aiming at the precise modeling of the assembly interface, the interface gradient virtual material thin-layer element is developed by integrating the measured data. Based on the surrogate model and genetic algorithm, the real-time assimilation and fusion of test data and simulation data are carried out. The thin-layer element parameters are optimized, and the dynamic updating of the assembly digital twin model is realized. Finally, the twin data model is applied to the dynamic performance analysis of the machining center and compared with the Takashi Yoshimura method. The results show that the analysis results of the twin data model are in good agreement with the test data, and the analysis accuracy is higher than that of the Takashi Yoshimura method, which verifies the feasibility of the digital twin model modeling method for assembly contact characteristics. The twin data model of contact characteristics can be extended and used to predict the mechanical performance of multiple joint structures in real time.
Chao Zhang; Qingchao Sun; Wei Sun; Xiaokai Mu; Yunlong Wang. A construction method of digital twin model for contact characteristics of assembly interface. The International Journal of Advanced Manufacturing Technology 2021, 113, 2685 -2699.
AMA StyleChao Zhang, Qingchao Sun, Wei Sun, Xiaokai Mu, Yunlong Wang. A construction method of digital twin model for contact characteristics of assembly interface. The International Journal of Advanced Manufacturing Technology. 2021; 113 (9-10):2685-2699.
Chicago/Turabian StyleChao Zhang; Qingchao Sun; Wei Sun; Xiaokai Mu; Yunlong Wang. 2021. "A construction method of digital twin model for contact characteristics of assembly interface." The International Journal of Advanced Manufacturing Technology 113, no. 9-10: 2685-2699.
This paper proposed a new friction mechanical model of joint interface to better describe the tangential stiffness softening. A new probability density function is obtained by analyzing the actual two-dimensional pressure distribution of bolted joint. Then, an improved tangential stiffness model and the corresponding extraction method of the model parameters based on FEA method was introduced, and the effectiveness of the model was verified by the designed slip test. Finally, this paper discussed the influence of various parameters on tangential stiffness, and explained the stiffness nonlinear softening from the evolution of sliding area. Compared with the existing model, the calculation accuracy is improved by 18.2%. The research content has a better application prospect in dynamic analysis of connection structures.
Binbin Zhao; Fayong Wu; Kepeng Sun; Xiaokai Mu; Yuanliang Zhang; Qingchao Sun. Study on tangential stiffness nonlinear softening of bolted joint in friction-sliding process. Tribology International 2021, 156, 106856 .
AMA StyleBinbin Zhao, Fayong Wu, Kepeng Sun, Xiaokai Mu, Yuanliang Zhang, Qingchao Sun. Study on tangential stiffness nonlinear softening of bolted joint in friction-sliding process. Tribology International. 2021; 156 ():106856.
Chicago/Turabian StyleBinbin Zhao; Fayong Wu; Kepeng Sun; Xiaokai Mu; Yuanliang Zhang; Qingchao Sun. 2021. "Study on tangential stiffness nonlinear softening of bolted joint in friction-sliding process." Tribology International 156, no. : 106856.
This paper presents a numerical simulation method to determine the surface morphology characteristics of metallic materials. First, a surface profiler (NV5000 5022s) was used to measure the surface, and the morphology data thereof were characterized. Second, fractal theory was used to simulate the surface profile for different fractal dimensions D and scale coefficients G, and statistical analyses of different surface morphologies were carried out. Finally, the fractal dimension D of the simulated morphology and the actual morphology were compared. The analysis showed that the error of fractal dimension D between the two morphologies was less than 10%; meanwhile, the comparison values of the characterization parameters of the simulated morphology and the actual morphology were approximately equal, and the errors were below 6%. Therefore, the current method used to evaluate the surface morphologies of parts processed by the grinding/milling method can be replaced by the simulated method using the corresponding parameters. This method makes it possible to theorize about the surface morphologies of machined parts, and provides a theoretical basis and reference value for the surface morphology design of materials, with the potential to improve the assembly quality of products.
Xiaokai Mu; Wei Sun; Chong Liu; Bo Yuan; Yunlong Wang; Qingchao Sun. Numerical Simulation and Accuracy Verification of Surface Morphology of Metal Materials Based on Fractal Theory. Materials 2020, 13, 4158 .
AMA StyleXiaokai Mu, Wei Sun, Chong Liu, Bo Yuan, Yunlong Wang, Qingchao Sun. Numerical Simulation and Accuracy Verification of Surface Morphology of Metal Materials Based on Fractal Theory. Materials. 2020; 13 (18):4158.
Chicago/Turabian StyleXiaokai Mu; Wei Sun; Chong Liu; Bo Yuan; Yunlong Wang; Qingchao Sun. 2020. "Numerical Simulation and Accuracy Verification of Surface Morphology of Metal Materials Based on Fractal Theory." Materials 13, no. 18: 4158.
Unlike LCF (low cycle Fatigue) and HCF (high cycle fatigue), VHCF (very high cycle fatigue) failures of high-strength steel are mostly caused by internal nonmetallic inclusions. In view of fact that more than 90% of VHCF life is consumed in the process of crack propagation from inclusion to GBF (granular bright facet) boundary, the SIF (stress intensity factor) KGBF at the periphery of GBF could be regarded as a material constant independent of fatigue life, which could be also considered as the macro threshold SIF controlling the internal small-long crack growth. Therefore, based on experimental research and theoretical analysis, the threshold crack growth stress model was derived from the change of SIF considering the effect of local stress and crack configuration. This model diagramed the relationship between the threshold stress and defect size (including inclusions and cracks) and could be used for fatigue strength prediction. Finally, the validity of the threshold stress-defect size diagram was proved by the VHCF test data of other five kinds of high-strength steels.
Kepeng Sun; Qingchao Sun; Yingzhong Zhang; Bowen Shi; Binbin Zhao. A pragmatic approach to predict fatigue strength concerning the short crack behavior in VHCF. International Journal of Fatigue 2020, 135, 105561 .
AMA StyleKepeng Sun, Qingchao Sun, Yingzhong Zhang, Bowen Shi, Binbin Zhao. A pragmatic approach to predict fatigue strength concerning the short crack behavior in VHCF. International Journal of Fatigue. 2020; 135 ():105561.
Chicago/Turabian StyleKepeng Sun; Qingchao Sun; Yingzhong Zhang; Bowen Shi; Binbin Zhao. 2020. "A pragmatic approach to predict fatigue strength concerning the short crack behavior in VHCF." International Journal of Fatigue 135, no. : 105561.
Purpose This paper aims to distinguish the relationship between the morphology characteristics of different scales and the contact performance of the mating surfaces. Also, an integrated method of the spectrum analysis and the wavelet transform is used to separate the morphology characteristics of the actual machined parts. Design/methodology/approach First, a three-dimensional (3D) surface profilometer is used to obtain the surface morphology data of the actual machined parts. Second, the morphology characteristics of different scales are realized by the wavelet analysis and the power spectral density. Third, the reverse modeling engineering is used to construct the 3D contact models for the macroscopic characteristics. Finally, the finite element method is used to analyze the contact stiffness and the contact area of the 3D contact model. Findings The contact area and the nominal contact pressure Pn have a nonlinear relationship in the whole compression process for the 3D contact model. The percentage of the total contact area of the macro-scale mating surface is about 70 per cent when the contact pressure Pn is in the range of 0-100 MPa, and the elastic contact area accounts for the vast majority. Meanwhile, when the contact pressure Pn is less than 10MPa, the influence factor (the relative error of contact stiffness) is larger than 50 per cent, so the surface macro-scale morphology has a weakening effect on the normal contact stiffness of the mating surfaces. Originality/value This paper provides an effective method for the multi-scale separation of the surface morphology and then lays a certain theoretical foundation for improving the surface quality of parts and the morphology design.
Qingchao Sun; Xiaokai Mu; Bo Yuan; Jiawen Xu; Wei Sun. Characteristics extraction and numerical analysis of the rough surface macro-morphology. Engineering Computations 2019, 36, 765 -780.
AMA StyleQingchao Sun, Xiaokai Mu, Bo Yuan, Jiawen Xu, Wei Sun. Characteristics extraction and numerical analysis of the rough surface macro-morphology. Engineering Computations. 2019; 36 (3):765-780.
Chicago/Turabian StyleQingchao Sun; Xiaokai Mu; Bo Yuan; Jiawen Xu; Wei Sun. 2019. "Characteristics extraction and numerical analysis of the rough surface macro-morphology." Engineering Computations 36, no. 3: 765-780.
Most of the current studies on the surface morphology only focus the Gaussian random rough surfaces, however, there are many non-Gaussian random rough surfaces with some skewness and kurtosis in practical engineering. In this paper, a theoretical simulation method of the non-Gauss surface is built considering the surface morphology characteristics of the actual parts. Firstly, a three-dimension (3D) surface profilometer is used to measure the surface profile of the actual grinding and milling parts, and the morphology characteristics for the surface profile are obtained by the data representation. Secondly, the non-Gauss simulation surface is generated by the Fast Fourier Transform (FFT), the Johnson conversion system, and the autocorrelation function, which correspond to the surface features of the actual machined surface. Thirdly, the reverse engineering technology is used to generate the surface model and the interface contact models by taking into account the morphology features of actual machined surface and non-Gauss simulated surface, respectively. Finally, the contact models of actual surface and non-Gaussian simulated surface are analyzed by the finite element technique. Results show that the change laws of the fitting curve for the pressure-displacement and the displacement-contact area percentage between the actual machined surface and the non-Gaussian simulated surface are almost the same. At the same time, the mean errors of the contact pressure for the non-Gauss simulated surface and the actual machined surface are 7.57% (grinding) and 8.56% (milling), respectively, and the mean errors of the contact area percentage in different contact states are 8.84%, 9.38%, 7.99% (grinding) and 9.13%, 5.21%, 7.99% (milling), respectively. Because the comparison errors of the two angles are within 10%, the contact performance of the non-Gauss numerical simulation surface and the actual machined surface of the parts is almost equal, which certifies the feasibility of the substitution between the two kinds of surfaces. This paper provides an effective method for the digital characterization and simulation of the surface morphology of parts.
Xiaokai Mu; Qingchao Sun; Jiawen Xu; Zhiping Chai; Wei Sun; Binbin Zhao. Feasibility analysis of the replacement of the actual machining surface by a 3D numerical simulation rough surface. International Journal of Mechanical Sciences 2018, 150, 135 -144.
AMA StyleXiaokai Mu, Qingchao Sun, Jiawen Xu, Zhiping Chai, Wei Sun, Binbin Zhao. Feasibility analysis of the replacement of the actual machining surface by a 3D numerical simulation rough surface. International Journal of Mechanical Sciences. 2018; 150 ():135-144.
Chicago/Turabian StyleXiaokai Mu; Qingchao Sun; Jiawen Xu; Zhiping Chai; Wei Sun; Binbin Zhao. 2018. "Feasibility analysis of the replacement of the actual machining surface by a 3D numerical simulation rough surface." International Journal of Mechanical Sciences 150, no. : 135-144.
Qingchao Sun; Xiaokai Mu; Jiawen Xu; Wei Sun; Lintao Wang; Yongliang Yuan. Substitutability analysis of a numerically simulated surface and an actual rough surface. AIP Advances 2018, 8, 085022 .
AMA StyleQingchao Sun, Xiaokai Mu, Jiawen Xu, Wei Sun, Lintao Wang, Yongliang Yuan. Substitutability analysis of a numerically simulated surface and an actual rough surface. AIP Advances. 2018; 8 (8):085022.
Chicago/Turabian StyleQingchao Sun; Xiaokai Mu; Jiawen Xu; Wei Sun; Lintao Wang; Yongliang Yuan. 2018. "Substitutability analysis of a numerically simulated surface and an actual rough surface." AIP Advances 8, no. 8: 085022.
Purpose This paper aims to comprehensively achieve the requirements of high assembly precision and low cost, a precision-cost model of assembly based on three-dimensional (3D) tolerance is established in this paper. Design/methodology/approach The assembly precision is related to the tolerance of parts and the deformation of matching surfaces under load. In this paper, the small displacement torsor (SDT) theory is first utilized to analyze the manufacturing tolerances of parts and the assembly deformation deviation of matching surface. In the meanwhile, the extracting method of SDT parameters is proposed and the assembly precision calculation model based on the 3D tolerance is established. Second, an integrated optimization model based on the machining cost, assembly cost (mapping the deviation domain to the SDT domain) and quality loss cost is built. Finally, the practicability of the precision-cost model is verified by optimizing the horizontal machining center. Findings The assembly deviation has a great influence on cost fluctuation. By setting the optimization objective to maximize the assembly precision, the optimal total cost is CNY 72.77, decreasing by 16.83 per cent from the initial value, which meets economical requirements. Meanwhile, the upper bound of each processing tolerance is close to the maximum value of 0.01 mm, indicating that the load deformation can be offset by appropriately increasing the upper bound of the tolerance, but it is necessary to strictly restrict the manufacturing tolerances of lower parts in a reasonable range. Originality/value In this paper, a 3D deviation precision-cost model of assembly is established, which can describe the assembly precision more accurately and achieve a lower cost compared with the assembly precision model based on rigid parts.
Wei Sun; Xiaokai Mu; Qingchao Sun; Zhiyong Sun; Xiaobang Wang. Analysis and optimization of assembly precision-cost model based on 3D tolerance expression. Assembly Automation 2018, 38, 497 -510.
AMA StyleWei Sun, Xiaokai Mu, Qingchao Sun, Zhiyong Sun, Xiaobang Wang. Analysis and optimization of assembly precision-cost model based on 3D tolerance expression. Assembly Automation. 2018; 38 (4):497-510.
Chicago/Turabian StyleWei Sun; Xiaokai Mu; Qingchao Sun; Zhiyong Sun; Xiaobang Wang. 2018. "Analysis and optimization of assembly precision-cost model based on 3D tolerance expression." Assembly Automation 38, no. 4: 497-510.
To describe the influence of design parameters on energy consumption, a structured information description framework oriented to energy-saving design of machinery equipment is proposed, which is composed of two sub-models: the energy consumption description model, and the design – energy consumption information correlation model. Firstly, the energy consumption composition of running procedures is analysed and the energy balance equations based on the kinetic energy theorem are built. Furthermore, a structured energy consumption description model – energy breakthrough structure (EBS) – is proposed; EBS is composed of some interrelated energy factors, and the energy factors are divided into two types: the energy element (EE) and the energy control unit (EC), where EE is the basic energy consumption description unit, and EC is the upper lower of energy factor, which is determined by the lower-level EE and EC. The relationships among energy factors can be divided into three types: Or, And, Proportional And; the energy relationships could be determined based on working conditions, design proposals or product structures. Additionally, based on the bond graph theory, the extracting method of energy features (such as force, displacement, pressure and flow) is brought forward, and a model related to the design parameters and energy was built. Finally, the feasibility of these models and methods was illustrated by taking the horizontal machining centre feed system as an example.
Qingchao Sun; Yingjie Jiang; Zhiyong Sun; Wei Sun. Structured information description framework oriented to energy-saving design of machinery equipment. International Journal of Computer Integrated Manufacturing 2017, 31, 469 -478.
AMA StyleQingchao Sun, Yingjie Jiang, Zhiyong Sun, Wei Sun. Structured information description framework oriented to energy-saving design of machinery equipment. International Journal of Computer Integrated Manufacturing. 2017; 31 (4-5):469-478.
Chicago/Turabian StyleQingchao Sun; Yingjie Jiang; Zhiyong Sun; Wei Sun. 2017. "Structured information description framework oriented to energy-saving design of machinery equipment." International Journal of Computer Integrated Manufacturing 31, no. 4-5: 469-478.
Multi-product collaborative development is adopted widely in manufacturing enterprise, while the present multi-project planning models don’t take technical/data interactions of multiple products into account. To decrease the influence of technical/data interactions on project progresses, the information flow scheduling models based on the extended DSM is presented. Firstly, information dependencies are divided into four types: series, parallel, coupling and similar. Secondly, different types of dependencies are expressed as DSM units, and the extended DSM model is brought forward, described as a block matrix. Furthermore, the information flow scheduling methods is proposed, which involves four types of operations, where partitioning and clustering algorithm are modified from DSM for ensuring progress of high-priority project, merging and converting is the specific computation of the extended DSM. Finally, the information flow scheduling of two machine tools development is analyzed with example, and different project priorities correspond to different task sequences and total coordination cost. The proposed methodology provides a detailed instruction for information flow scheduling in multi-product development, with specially concerning technical/data interactions.
Qing-Chao Sun; Wei-Qiang Huang; Ying-Jie Jiang; Wei Sun. Information Flow Scheduling in Concurrent Multi-Product Development Based on DSM. Chinese Journal of Mechanical Engineering 2017, 30, 1101 -1111.
AMA StyleQing-Chao Sun, Wei-Qiang Huang, Ying-Jie Jiang, Wei Sun. Information Flow Scheduling in Concurrent Multi-Product Development Based on DSM. Chinese Journal of Mechanical Engineering. 2017; 30 (5):1101-1111.
Chicago/Turabian StyleQing-Chao Sun; Wei-Qiang Huang; Ying-Jie Jiang; Wei Sun. 2017. "Information Flow Scheduling in Concurrent Multi-Product Development Based on DSM." Chinese Journal of Mechanical Engineering 30, no. 5: 1101-1111.
The precision of mechanical equipment closely associated with parts manufacturing precision. This article mainly to realize the machine precision on the basis of low manufacturing accuracy of parts through the homogeneous coordinate transformation and the Taguchi theory. Firstly, using the homogeneous coordinate transformation to establish the transfer accumulation model of machine precision. Secondly, the mathematical model of three dimensional tolerance based on the new generation Geometrical Product Specification (GPS) is built. Thirdly, this paper establishes the tolerance matching model based on Taguchi method and Taguchi orthogonal table model to improve the machine assembly precision without increasing manufacturing cost. Finally, with the example of horizontal machining center to discuss the 3D deviation transmission accumulation model, through the comparison analysis between the random combination method and the Taguchi orthogonal table on controlling the accumulated deviation show that the control effect of the first group’s experimental scheme for Taguchi orthogonal table is worst, while the third group is best. In a word, building the best deviation combination scheme of statistical significance not only reduce the cost, but also improve the overall assembly quality and has a certain guiding significance for the actual production.
Wei Sun; Xiaokai Mu; Qingchao Sun; Yingjie Jiang. The grouping and matching of three dimensional deviation based on homogeneous transformation and Taguchi theory. Journal of Advanced Mechanical Design, Systems, and Manufacturing 2017, 11, JAMDSM0010 -JAMDSM0010.
AMA StyleWei Sun, Xiaokai Mu, Qingchao Sun, Yingjie Jiang. The grouping and matching of three dimensional deviation based on homogeneous transformation and Taguchi theory. Journal of Advanced Mechanical Design, Systems, and Manufacturing. 2017; 11 (1):JAMDSM0010-JAMDSM0010.
Chicago/Turabian StyleWei Sun; Xiaokai Mu; Qingchao Sun; Yingjie Jiang. 2017. "The grouping and matching of three dimensional deviation based on homogeneous transformation and Taguchi theory." Journal of Advanced Mechanical Design, Systems, and Manufacturing 11, no. 1: JAMDSM0010-JAMDSM0010.
Fatigue property of FV520B-I can be affected by the changing of the loading frequency. However few theories about neither the experimental data correction nor the fatigue conversion model for FV520B-I has ever been proposed. Both ultrasonic experiment and conventional experiment are conducted out to obtain the fatigue data. An FV520B-I empirical fatigue life conversion model is established with a fitting algorithm based on the experimental data. Also the fatigue strength correction coefficients of FV520B-I are obtained and a new material frequency correction factor is introduced to modify the coefficients. The FV520B-I fatigue conversion models are established with comprehensive use of the correction factor. This investigation for FV520B-I is novel and has an important significance in the remanufacturing engineering for FV520B-I.
Jin-Long Wang; Yuan-Liang Zhang; Bo-Wen Shi; Qing-Chen Zhao; Qing-Chao Sun; Zhao Zhang. Research of the Influence of Loading Frequency on the Fatigue Property of FV520B-I and Establishment of Fatigue Conversion Model. DEStech Transactions on Engineering and Technology Research 2016, 1 .
AMA StyleJin-Long Wang, Yuan-Liang Zhang, Bo-Wen Shi, Qing-Chen Zhao, Qing-Chao Sun, Zhao Zhang. Research of the Influence of Loading Frequency on the Fatigue Property of FV520B-I and Establishment of Fatigue Conversion Model. DEStech Transactions on Engineering and Technology Research. 2016; (amita):1.
Chicago/Turabian StyleJin-Long Wang; Yuan-Liang Zhang; Bo-Wen Shi; Qing-Chen Zhao; Qing-Chao Sun; Zhao Zhang. 2016. "Research of the Influence of Loading Frequency on the Fatigue Property of FV520B-I and Establishment of Fatigue Conversion Model." DEStech Transactions on Engineering and Technology Research , no. amita: 1.
Surface roughness has proven to be an important factor on the fatigue life of FV520B-I. However few laboratory experiments on fatigue properties with the consideration of surface roughness are reported in literature. In this paper, giga-cycle fatigue experiment was conducted to obtain fatigue data and the mechanism of fracture development for FV520B-I. With a comprehensive use of energy theory, fracture developing mechanics and the impact of stress ratio, a life prediction model for FV520B-I with the synthesis of surface roughness information is established. Using the fatigue data, including life time and inclusion size, an FV520B-I empirical fatigue life prediction model is identified by both model fitting and model parameters estimation. This model of giga-cycle fatigue of FV520-I is novel to the study of FV520B-I because of the surface roughness considered comprehensively in modeling. This result will also highly enhance the research development in remanufacturing engineering.
Jinlong Wang; Yuanliang Zhang; Qingchao Sun; Shujie Liu; Bowen Shi; Huitian Lu. Giga-fatigue life prediction of FV520B-I with surface roughness. Materials & Design 2016, 89, 1028 -1034.
AMA StyleJinlong Wang, Yuanliang Zhang, Qingchao Sun, Shujie Liu, Bowen Shi, Huitian Lu. Giga-fatigue life prediction of FV520B-I with surface roughness. Materials & Design. 2016; 89 ():1028-1034.
Chicago/Turabian StyleJinlong Wang; Yuanliang Zhang; Qingchao Sun; Shujie Liu; Bowen Shi; Huitian Lu. 2016. "Giga-fatigue life prediction of FV520B-I with surface roughness." Materials & Design 89, no. : 1028-1034.
This paper proposes a concept model for product life cycle to present the characteristics of material flow, energy flow and waste flow in a manufacture system. Furthermore, two energy consumption calculation methods are provided according to t...
Qinyi Ma; Qingchao Sun; Yanqiu Liu; Yajun Wang; Maojun Zhou. A Method of Carbon Footprint Calculation for the Product Life Cycle. Manufacturing Technology 2014, 14, 566 -572.
AMA StyleQinyi Ma, Qingchao Sun, Yanqiu Liu, Yajun Wang, Maojun Zhou. A Method of Carbon Footprint Calculation for the Product Life Cycle. Manufacturing Technology. 2014; 14 (4):566-572.
Chicago/Turabian StyleQinyi Ma; Qingchao Sun; Yanqiu Liu; Yajun Wang; Maojun Zhou. 2014. "A Method of Carbon Footprint Calculation for the Product Life Cycle." Manufacturing Technology 14, no. 4: 566-572.
Jing Wei; Qinchao Sun; Wei Sun; Xin Ding; Wenping Tu; Qingguo Wang. Load-sharing characteristic of multiple pinions driving in tunneling boring machine. Chinese Journal of Mechanical Engineering 2013, 26, 532 -540.
AMA StyleJing Wei, Qinchao Sun, Wei Sun, Xin Ding, Wenping Tu, Qingguo Wang. Load-sharing characteristic of multiple pinions driving in tunneling boring machine. Chinese Journal of Mechanical Engineering. 2013; 26 (3):532-540.
Chicago/Turabian StyleJing Wei; Qinchao Sun; Wei Sun; Xin Ding; Wenping Tu; Qingguo Wang. 2013. "Load-sharing characteristic of multiple pinions driving in tunneling boring machine." Chinese Journal of Mechanical Engineering 26, no. 3: 532-540.