In this work, a tensegrity structure with spatially curved members is applied as rolling locomotion system. The actuation of the structure allows a variation of the originally cylindrical shape to a conical shape. Moreover, the structure is equipped with internal movable masses to control the position of the center of mass of the structure. To control the locomotion system a reliable actuation strategy is required. Therefore, the kinematics of the system considering the nonholonomic constraints are derived in this paper. Based on the resulting insight in the locomotion behavior a feasible actuation strategy is designed to control the trajectory of the system. To verify this approach kinematic analyses are evaluated numerically. The simulation data confirm the path following due to an appropriate shape change of the tensegrity structure. Thus, this system enables a two-dimensional rolling locomotion.
The objective of this paper is to describe a model for the simulation of the lateral dynamics of a vehicle, specifically buses, under variable trajectory conditions, such as camber and radius of curvature; in addition, a variable speed is added as a simulation parameter. The objective of this study is the prevention of vehicle rollover and sideslip. An 8 degrees of freedom model was developed, considering a front and a rear section of the bus with its respective suspension system, and both sections have been connected by a torsion spring that emulates the torsional stiffness of the vehicle chassis. A Panhard bar is also added at the rear as an additional element to the suspension and the behavior of the bus when it is added is analyzed. This model also allows the evaluation of the force on each suspension component, which allows for future controllability of the active suspension components. The results show the dynamic behavior of the vehicle, and some indicators are introduced to show the possible sideslip or rollover. As a conclusion, the influence of the road parameters on the dynamic behavior of the bus and the effect of the Panhard bar on the dynamic behavior of the bus can be pointed out.
This research presents the design, implementation, and validation of KitMec, a modular educational tool developed to support the teaching and learning of simple machines in engineering and design education. The study examines persistent difficulties students face in understanding and applying mechanical principles, particularly in Latin American contexts where access to didactic materials is limited or dependent on costly imported kits. A user-centered, design-based methodology was applied, structured in three stages: exploration, conceptualization, and validation. Six university instructors from industrial design, mechanical engineering, and mechatronics, along with ten design students, participated in semi-structured interviews to identify pedagogical needs. Subsequently, a digital validation involving 29 participants achieved a 72 % acceptance rate. Results indicate that KitMec promotes active learning, improves conceptual understanding, and increases motivation through hands-on experimentation and interdisciplinary collaboration. Its modular, low-cost design enables adaptability across disciplines and educational levels, contributing to inclusive and sustainable STEM/STEAM education in Latin America.