Dynamic structural optimization; Level set method; Flexible multibody system
Abstract :
[en] This paper considers the optimization of flexible components in mechanical systems thanks to a "fully integrated" optimization method which includes a flexible multibody system simulation based on nonlinear finite elements. This approach permits to better capture the effects of dynamic loading under service conditions. This process is challenging because most state-of-the-art studies in structural optimization have been conducted under (quasi-)static loading conditions or vibration design criteria and also because this ``fully integrated" optimization method is not a simple extension of static optimization techniques. The present paper proposes an approach based on a Level Set description of the geometry. This method leads to an intermediate level between shape and topology optimizations. Gradient-based optimization methods are adopted for their convergence speed. Numerical applications are conducted on the optimization of a connecting rod of a reciprocating engine with cyclic dynamic loading to show the feasibility and the promising results of this approach.
Disciplines :
Mechanical engineering
Author, co-author :
Tromme, Emmanuel ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Ingénierie des véhicules terrestres
Bruls, Olivier ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire des Systèmes Multicorps et Mécatroniques
Van Miegroet, Laurent ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Ingénierie des véhicules terrestres
Virlez, Geoffrey ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Ingénierie des véhicules terrestres
Duysinx, Pierre ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Ingénierie des véhicules terrestres
Language :
English
Title :
Investigations on a Level Set based approach for the optimization of flexible components in multibody systems with a fixed mesh grid
Publication date :
August 2012
Event name :
The 6th Asian Conference on Multibody Dynamics
Event organizer :
Shanghai Jiao Tong University
Event place :
Shanghai, China
Event date :
du 26 aout au 30 aout 2012
Audience :
International
Main work title :
Proceedings of The 6th Asian Conference on Multibody Dynamics: Shanghai (China), 26-30 aout 2012
Funders :
Lightcar Project sponsored by the Walloon Region of Belgium
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