Application of mode superposition to hybrid simulation using Real Time Finite Element Method

Waldemar Mucha, W. KUŚ

Abstract


The following paper presents methods for application of mode superposition to the analytical part of the hybrid simulation, when Real Time Finite Element Method is used to model the analytical substructure. Introducing mode superposition can bring significant computation time decrease in real time computations, by performing some calculations offline. The paper describes requirements, methods and algorithms for introducing mode superposition to explicit  and implicit integration schemes. In explicit schemes  mode superposition allows to increase the minimum time step often enabling real time computations that were not possible before. In implicit schemes mode superposition allows to reduce the time step of the analysis (and therefore increase accuracy). Numerical examples proving the effectiveness of the presented algorithms are given.

DOI: http://dx.doi.org/10.5755/j01.mech.23.5.14642


Keywords


hybrid simulation; mode superposition; real time finite element method

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Print ISSN: 1392-1207
Online ISSN: 2029-6983