Paulo Flores – författare

This work presents the most recent research in the mechanism and machine science field and its applications. The topics covered include: theoretical kinematics, computational kinematics, mechanism design, experimental mechanics, mechanics of robots, dynamics of machinery, dynamics of multi-body systems, control issues of mechanical systems, mechanisms for biomechanics, novel designs, mechanical transmissions, linkages and manipulators, micro-mechanisms, teaching methods, history of mechanism science and industrial and non-industrial applications.

This volume consists of the Proceedings of the 5th European Conference on Mechanisms Science (EUCOMES) that was held in Guimarães, Portugal, from September 16 – 20, 2014. The EUCOMES is the main forum for the European community working in Mechanisms and Machine Science.

This book will be particularly useful to those interested in multibody simulation (MBS) and the formulation for the dynamics of spatial multibody systems. The main types of coordinates that can be used in the formulation of the equations of motion of constrained multibody systems are described. The multibody system, made of interconnected bodies that undergo large displacements and rotations, is fully defined.Readers will discover how Cartesian coordinates and Euler parameters are utilized and are the supporting structure for all methodologies and dynamic analysis, developed within the multibody systems methodologies. The work also covers the constraint equations associated with the basic kinematic joints, as well as those related to the constraints between two vectors.The formulation of multibody systems adopted here uses the generalized coordinates and the Newton-Euler approach to derive the equations of motion. This formulation results in the establishment of a mixed setof differential and algebraic equations, which are solved in order to predict the dynamic behavior of multibody systems. This approach is very straightforward in terms of assembling the equations of motion and providing all joint reaction forces.The demonstrative examples and discussions of applications are particularly valuable aspects of this book, which builds the reader’s understanding of fundamental concepts.

This book analyzes severalcompliant contact force models within the context of multibody dynamics, whilealso revisiting the main issues associated with fundamental contact mechanics.In particular, it presents various contact force models, from linear tononlinear, from purely elastic to dissipative, and describes their parameters.Addressing the different numerical methods and algorithms for contact problemsin multibody systems, the book describes the gross motion of multibody systemsby using a two-dimensional formulation based on the absolute coordinates andemploys different contact models to represent contact-impact events. Resultsfor selected planar multibody mechanical systems are presented and utilized todiscuss the main assumptions and procedures adopted throughout this work. Thematerial provided here indicates that the prediction of the dynamic behavior ofmechanical systems involving contact-impact strongly depends on the choice ofcontact force model. In short, the book provides a comprehensive resource forthe multibody dynamics community and beyond on modeling contact forces and thedynamics of mechanical systems undergoing contact-impact events.