On the influence of model reduction techniques in topology optimization of flexible multibody systems using the floating frame of reference approach

Journal
Structural and multidisciplinary optimization  
Volume
53
Issue
1
Start Page
67
End Page
80
Citation
Structural and Multidisciplinary Optimization 1 (53): 67-80 (2016)
Publisher DOI
10.1007/s00158-015-1302-4
Scopus ID
2-s2.0-84958666711
Publisher
Springer
Employing the floating frame of reference formulation in the topology optimization of dynamically loaded components of flexible multibody systems seems to be a natural choice. In this formulation the deformation of flexible bodies is approximated by global shape functions, which are commonly obtained from finite element models using model reduction techniques. For topology optimization these finite element models can be parameterized using the solid isotropic material with penalization (SIMP) approach. However, little is known about the interplay of model reduction and SIMP parameterization. Also securing the model reduction quality despite major changes of the design during the optimization has not been addressed yet. Thus, using the examples of a flexible frame and a slider-crank mechanism this work discusses the proper choice of the model reduction technique in the topology optimization of flexible multibody systems.
Subjects
flexible multibody systems
floating frame of reference approach
global shape functions
model order reduction
SIMP approach
topology optimization in dynamics
DDC Class
500: Naturwissenschaften
More Funding Information
German Research Foundation (DFG) project No. (EXC 310/2)