|Reference : Topology Optimization of Structural Components: A Multibody Dynamics-Oriented Approach|
|Scientific congresses and symposiums : Paper published in a book|
|Engineering, computing & technology : Mechanical engineering|
Engineering, computing & technology : Electrical & electronics engineering
Engineering, computing & technology : Computer science
|Topology Optimization of Structural Components: A Multibody Dynamics-Oriented Approach|
|Bruls, Olivier [Université de Liège - ULg > Département d'aérospatiale et mécanique > Laboratoire des Systèmes Multicorps et Mécatroniques >]|
|Lemaire, Etienne [Université de Liège - ULg > Département d'aérospatiale et mécanique > Conception géométrique assistée par ordinateur >]|
|Duysinx, Pierre [Université de Liège - ULg > Département d'aérospatiale et mécanique > Ingénierie des véhicules terrestres >]|
|Eberhard, Peter [University of Stuttgart, Pfaffenwaldring 9, 70569 Stuttgart, Germany > > > > >]|
|Proceedings of the Multibody Dynamics ECCOMAS Conference|
|K. Arczewski, J. Fraczek, M. Wojtyra|
|Multibody Dynamics ECCOMAS Conference|
|29 June–2 July 2009|
|[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|
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