Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/32205
Título: | Comparison of different methods to control constraints violation in forward multibody dynamics |
Autor(es): | Flores, Paulo Nikravesh, Parviz E. |
Palavras-chave: | Constraints violation Baumgarte method Penalty approach Augmented Lagrangian formulation Coordinate partitioning method Direct correction Multibody dynamics |
Data: | 2014 |
Editora: | American Society of Mechanical Engineers (ASME) |
Resumo(s): | The dynamic equations of motion for constrained multibody systems are frequently formulated using the Newton-Euler’s approach, which is augmented with the acceleration constraint equations. This formulation results in the establishment of a mixed set of differential and algebraic equations, which are solved in order to predict the dynamic behavior of general multibody systems. It is known that the standard resolution of the equations of motion is highly prone to constraints violation because the position and velocity constraint equations are not fulfilled. In this work, a general review of the main methods commonly used to control or eliminate the violation of the constraint equations in the context of multibody dynamics formulation is presented and discussed. Furthermore, a general and comprehensive methodology to eliminate the constraints violation at the position and velocity levels is also presented. The basic idea of this approach is to add corrective terms to the position and velocity vectors with the intent to satisfy the corresponding kinematic constraint equations. These corrective terms are evaluated as function of the Moore-Penrose generalized inverse of the Jacobian matrix and of the kinematic constraint equations. |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/32205 |
ISBN: | 9780791855966 |
DOI: | 10.1115/DETC2013-12591 |
Versão da editora: | www.asme.org |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | DEM - Publicações em actas de encontros científicos / Papers in conference proceedings |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
6.9.118 2013.pdf Acesso restrito! | Documento principal | 1,65 MB | Adobe PDF | Ver/Abrir |