Reference : System-wise equivalent static loads for the design of flexible mechanisms
Scientific journals : Article
Engineering, computing & technology : Mechanical engineering
http://hdl.handle.net/2268/224566
System-wise equivalent static loads for the design of flexible mechanisms
English
Tromme, Emmanuel []
Sonneville, Valentin []
Guest, James K. []
Bruls, Olivier mailto [Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire des Systèmes Multicorps et Mécatroniques >]
2018
Computer Methods in Applied Mechanics and Engineering
Elsevier
329
312-331
Yes (verified by ORBi)
International
0045-7825
1879-2138
Netherlands
[en] Optimization ; Multibody system ; Mechanism
[en] Structural optimization of flexible multibody systems (MBS) is a challenging design problem which has received increased attention in the last decade. The weakly coupled method is a powerful method to solve this design problem as it transforms the underlying dynamic response optimization problem into a static response optimization problem subject to multiple load cases. These load cases can be conveniently defined using the so-called Equivalent Static Load (ESL) method. With the usual ESL method, ESLs are defined at a component-level assuming that each component is isolated from the rest of the system. Thus, this method cannot account for design functions involving the global response of the system but it is restricted to optimization problems that are solely formulated in terms of local responses within the components. In order to get rid of this restriction, a system-wise extension of the ESL method is proposed. It is shown that the solutions of the equivalent static optimization problem and of the initial MBS optimization problem are equivalent and that the ESL formulation naturally leads to a weakly coupled solution algorithm. Standard benchmarks exemplify the proposed method.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/224566
10.1016/j.cma.2017.10.003

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