Reference : Topology Optimization of Structural Components: A Multibody Dynamics-Oriented Approach
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Engineering, computing & technology : Computer science
Engineering, computing & technology : Electrical & electronics engineering
Engineering, computing & technology : Mechanical engineering
http://hdl.handle.net/2268/27079
Topology Optimization of Structural Components: A Multibody Dynamics-Oriented Approach
English
Bruls, Olivier mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > Laboratoire des Systèmes Multicorps et Mécatroniques >]
Lemaire, Etienne mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > Conception géométrique assistée par ordinateur >]
Duysinx, Pierre mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > Ingénierie des véhicules terrestres >]
Eberhard, Peter mailto [University of Stuttgart, Pfaffenwaldring 9, 70569 Stuttgart, Germany > > > > >]
2009
Proceedings of the Multibody Dynamics ECCOMAS Conference
K. Arczewski, J. Fraczek, M. Wojtyra
1-13
No
International
Multibody Dynamics ECCOMAS Conference
29 June–2 July 2009
Warsaw
Poland
[en] Topology Optimization, Sensitivity Analysis, Time Integration, SIMP
[en] This work addresses the topology optimization of structural components embedded
in multibody systems with large amplitude motions. Generally, topology optimization techniques consider that the structural component is isolated from the rest of the mechanism and use simplified quasi-static load cases to mimic the complex loadings in service. In contrast, this paper proposes an optimization procedure based on the dynamic simulation of the full multibody system with large amplitude motions and elastic deflections. We show that the simulation model, which involves a nonlinear finite element formulation, a time integration scheme and a sensitivity analysis, can be efficiently exploited in an optimization loop.
The method is applied to truss structural components. Each truss is represented by a separate structural universe of beams with a topology design variable attached to each one. A SIMP model (or a variant of the power law) is used to penalize intermediate densities. The optimization formulation is stated as the minimization of the mean compliance over a time period or as the minimization of the mean tip deflection during a given trajectory, subject to a volume constraint. In order to illustrate the benefits of the integrated design approach, the case of a two degrees-of-freedom robot arm is developed.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/27079

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