INVESTIGADORES
CARDONA alberto
artículos
Título:
A robust nonsmooth generalized-α$\alpha $ scheme for flexible systems with impacts
Autor/es:
COSIMO, ALEJANDRO; GALVEZ, JAVIER; CAVALIERI, FEDERICO J.; CARDONA, ALBERTO; BRÜLS, OLIVIER
Revista:
MULTIBODY SYSTEM DYNAMICS
Editorial:
SPRINGER
Referencias:
Año: 2019 vol. 48 p. 127 - 149
ISSN:
1384-5640
Resumen:
The aim of this work is the development of a robust and accurate time integrator for the simulation of the dynamics of multibody systems composed of rigid and/or flexible bodies subject to frictionless contacts and impacts. The integrator is built upon a previously developed nonsmooth generalized-α scheme time integrator which was able to deal well with nonsmooth dynamical problems avoiding any constraint drift phenomena and capturing vibration effects without introducing too much numerical dissipation. However, when dealing with problems involving nonlinear bilateral constraints and/or flexible elements, it is necessary to adopt small time-step sizes to ensure the convergence of the numerical scheme. In order to tackle these problems more efficiently, a fully decoupled version of the nonsmooth generalized-α method is proposed in this work, avoiding these inconveniences. Several examples are considered to assess its accuracy and robustness.