TY - GEN

T1 - Flexible multibody dynamics

T2 - 38th IMAC, A Conference and Exposition on Structural Dynamics, 2020

AU - Witteveen, Wolfgang

AU - Pichler, Florian

N1 - Funding Information:
This work was supported in part by the Ministry of Economic Affairs, Taiwan, under Grant 99-EC-17-A-02-S1-032, and the Excellent Research Projects of National Taiwan University, under grants 99R80303.
Publisher Copyright:
© The Society for Experimental Mechanics, Inc 2021.

PY - 2021

Y1 - 2021

N2 - Scientists often face the task to carry out a “proof of concept” of a research idea. If this is related to multibody simulation of flexible bodies, it is sometimes necessary to implement a simple and problem-oriented multibody simulation code in programs like Matlab or Scilab. The question then arises, which terms of the equation of motion have to be considered when the flexible body is modelled along the Floating Frame of Reference Formulation. The consideration of all effects leads to very complex expressions and also require costly FE preprocessing. A remarkably simplified version can be obtained, by a strict application of the small deformation assumption to the level of the kinetic energy. But what is the truth in the context of a certain problem? Clear rules are provided, so that a researcher can decide for a particular mechanical system, which terms are required and which ones can be neglected. This work reviews a paper that has been recently published by the authors with respect to this question.

AB - Scientists often face the task to carry out a “proof of concept” of a research idea. If this is related to multibody simulation of flexible bodies, it is sometimes necessary to implement a simple and problem-oriented multibody simulation code in programs like Matlab or Scilab. The question then arises, which terms of the equation of motion have to be considered when the flexible body is modelled along the Floating Frame of Reference Formulation. The consideration of all effects leads to very complex expressions and also require costly FE preprocessing. A remarkably simplified version can be obtained, by a strict application of the small deformation assumption to the level of the kinetic energy. But what is the truth in the context of a certain problem? Clear rules are provided, so that a researcher can decide for a particular mechanical system, which terms are required and which ones can be neglected. This work reviews a paper that has been recently published by the authors with respect to this question.

KW - FFRF

KW - Flexible body

KW - Flexible multibody dynamics

KW - Floating frame of reference formulation

KW - Small deformations

UR - http://www.scopus.com/inward/record.url?scp=85091578346&partnerID=8YFLogxK

U2 - 10.1007/978-3-030-47626-7_4

DO - 10.1007/978-3-030-47626-7_4

M3 - Conference contribution

AN - SCOPUS:85091578346

SN - 9783030476250

T3 - Conference Proceedings of the Society for Experimental Mechanics Series

SP - 31

EP - 34

BT - Nonlinear Structures and Systems, Volume 1 - Proceedings of the 38th IMAC, A Conference and Exposition on Structural Dynamics, 2020

A2 - Kerschen, Gaetan

A2 - Brake, Matthew R.W.

A2 - Renson, Ludovic

PB - Springer

Y2 - 10 February 2020 through 13 February 2020

ER -