Discontinuous Galerkin Method and Dual-SLERP for Time Integration of Flexible Multibody Dynamics

Author:

Han Shilei1,Bauchau Olivier A.1

Affiliation:

1. Department of Aerospace Engineering, University of Maryland, College Park, MD 20742

Abstract

Abstract A novel time-discontinuous Galerkin (DG) method is introduced for the time integration of the differential-algebraic equations governing the dynamic response of flexible multibody systems. In contrast to traditional Galerkin methods, the rigid-body motion field is interpolated using the dual spherical linear scheme. Furthermore, the jumps inherent to time-DG methods are expressed in terms of a parameterization of the relative motion from one time-step to the next. The proposed scheme is third-order accurate for initial value problems of both rigid and flexible multibody dynamics.

Publisher

ASME International

Subject

Applied Mathematics,Mechanical Engineering,Control and Systems Engineering,Applied Mathematics,Mechanical Engineering,Control and Systems Engineering

Reference34 articles.

1. Integrating Finite Rotations;Comput. Methods Appl. Mech. Eng.,1998

2. Integration of Flexible Multibody Systems Using Radau IIA Algorithms;ASME J. Comput. Nonlinear Dyn.,2010

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