Prof. Aleksander Muc
Cracow University of Technology, 31-155 Cracow, Warszawska 24
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Academic Career Length
36Years (1991-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
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Journal Article
Aeroelastic optimization has become an indispensable component in the evaluation of divergence and flutter characteristics for plated/shell structures. The present paper intends to review the fundamental trends and dominant approaches in the optimal design of engineering constructions. A special attention is focused on the formulation of objective functions/functional and the definition of physical (material) variables, particularly in view of composite materials understood in the broader sense as not only multilayered laminates but also as sandwich structures, nanocomposites, functionally graded materials, and materials with piezoelectric actuators/sensors. Moreover, various original aspects of optimization problems of composite structures are demonstrated, discussed, and reviewed in depth.
Journal Article
Aleksander MucPRPaweł J. Romanowicz
Paweł J. Romanowicz
Małgorzata ChwałThe paper gives a set of basic relations characterizing the phenomena of viscous polymer resin flow through fiber reinforcement and the resin curing process. We describe the technological process of manufacturing composite structures. The influence of the resin curing process on values of residual stresses in composite constructions is analyzed taking into account two components: thermal shrinkage and chemical shrinkage of resins. For cases of 2-D structures, the method of formulating such tasks has been demonstrated. The types of design variables appearing in the optimization problems in this area are also presented. The 2-D optimization problems have been formulated. Various optimization problems are solved in order to demonstrate the influence of discussed relations on values of residual stresses and curing processes of thermosetting resins.
30 June 2017 in Applied Composite Materials
Journal Article
This article explains in some details the behaviour of thick, deep cylindrical sandwich panels subjected to compressive loads. In general, experimental results indicated that two different forms of failure have been observed – the first corresponds to the overall buckling and the second to the facesheet wrinkling. The obtained experimentally damages of shells are verified and validated with the use of the FE analysis, 2-D and 3-D both in the linear and non-linear approach. The unidirectional strain gauges were applied to detect the initiation of the overall buckling mode.
Journal Article
Aleksander MucFree vibration (or eigenvalue analysis) is a prerequisite for aeroelastic analysis. For divergence analysis, slope influence coefficients (rotation at point i due to unit load at point j) are calculated using free vibration mode shapes and corresponding frequencies. The lowest eigenvalue is of interest and gives the divergence speed. The present paper considers the maximization problem of eigenfrequencies for composite panels. The influence of boundary conditions and constant or variable stiffnesses on optimization results are investigated herein. A new convenient set of design variables is employed in the analysis. The computations are carried out with the use of the Rayleigh–Ritz method and Finite Element analysis (2D quadrilateral and 3D solid elements).
4 June 2018 in Latin American Journal of Solids and Structures
Journal Article
Aleksander MucThe basic information required to utilize one of possible computation tools/algorithms (mainly the evolution strategy) to solve a wide class of real practical engineering optimization problems is presented and discussed in the present paper. The effectiveness of the considered method is demonstrated by the possibility of the use of different form of objective functions, various and numerous nonlinear constraints and different types of design variables (continuous, discrete, real, integer). The sensitivity of the algorithm to the choice of the evolution strategy parameters is also discussed herein. The generality of the evolution strategy is illustrated by the analysis of various examples dealing with: the design of helical springs, the buckling of cylindrical composite panels and the buckling of pressure vessels with domed heads.
About Me
MSc (Appl Mech – Cracow Univ Techn 1980), (Theor. Physics – the Jagiellonian Univ, 1980)
PhD (Appl Mech – Cracow Univ Techn 1986)
DSc (Appl Mech – Cracow Univ Techn 1992) Habilitation
Professor of Technical Sciences (President of Poland) – 2004
Subjects of Scientific works: optimal design, beams, plates, shells, pressure vessels, composite materials & structures, sandwich structures, nanostructures, FEM analysis, buckling, fuzzy logic, thermal analysis, experimental analysis – static, fatigue, piezoelctric transducers, FGM
Supervisor of 12 PhD Thesis – first 2002 last 2021
Chair of 7 scientific grants.
Author of 165 papers cited in Scopus (h=23) and 79 papers in Polish.
3 prizes of the Polish Ministry of Education and Science for scientific achievements in 1999, 2004 and 2021.
I was cited 5 times among the 2% of the best scientists in the world (Scopus, Stanford).
Edit.Board J. of Composites Part C and of Mech of Composite Materials.
The head of the Institute of Machine Design (CUT) 2011-2021.
More than 150 referees at the scientific conferences
Scholarship: University of Liverpool (1986-88),DTH Lyngby (1992)
Ten of scientific visits longer than 1 week.
I built laboratory of failure of composite materials and structures (CUT) – vacuum bag method, MTS machine, acoustic emission, thermal analysis, DIC.
I was employed at Mech. Eng. Faculty from 1980-2021. Now I am working at the Faculty of Material Eng. and Physics – Department of Physics