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Modelling of superelements in mechanism analysis
Author(s) -
Cardona Alberto,
Geradin Michel
Publication year - 1991
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620320805
Subject(s) - discretization , inertia , finite element method , computer science , mechanism (biology) , component (thermodynamics) , beam (structure) , simple (philosophy) , multibody system , antenna (radio) , control theory (sociology) , structural engineering , classical mechanics , engineering , mathematics , physics , mathematical analysis , artificial intelligence , telecommunications , philosophy , control (management) , epistemology , quantum mechanics , thermodynamics
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 mass discretization and corotational approximation of inertia forces. To simplify the computer implementation, only the lumped mass and corotational approximations have been considered in detail and programmed. Both approaches are validated on simple examples of rotating beams for which a full elastic model is available using a fully non‐linear beam element. The computational efficiency of the corotational inertia approach is also demonstrated on the deployment of a large flexible satellite antenna.