Modelling of superelements in mechanism analysis

作者: Alberto Cardona , Michel Geradin

DOI: 10.1002/NME.1620320805

关键词: Control theoryAlgorithmComponent (UML)Dynamical systemSubstructureBeam (structure)Finite element methodComputer programInertiaMathematicsDiscretization

摘要: The paper deals with substructuring for dynamic analysis of flexible multibody systems. Three different techniques based on component synthesis are discussed, corresponding respectively to fully consistent mass discretization, lumped discretization and corotational approximation inertia forces. To simplify the computer implementation, only approximations have been considered in detail programmed. Both approaches validated simple examples rotating beams which a full elastic model is available using non-linear beam element. computational efficiency approach also demonstrated deployment large satellite antenna.

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