Handling bifurcations in the optimal design of transient dynamic problems

Samy Missoum, Samir Ben Chaabane, Bruno Sudret

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

This paper presents a methodology to tackle some of the difficulties encountered in the optimal design of transient dynamic problems. For this class of problems, the structural responses can be discontinuous due to numerous bifurcations. This characteristic makes gradient-based or response surface optimization techniques difficult to implement. This work (in progress) proposes an approach to define regions of the design space where the dynamic behavior is homogeneous and hence does not produce discontinuities. This is done by isolating points that correspond to unwanted bifurcations within boundaries that are defined explicitly in terms of the design variables. Using this method, a designer can obtain an optimal design with a prescribed dynamic behavior. The approach is applied to the design of a tube impacting a rigid wall. In addition, as the transient dynamic behavior is very sensitive to small variations of the design, reliability-based optimization is considered.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Pages5432-5441
Number of pages10
Volume7
StatePublished - 2004
Externally publishedYes
EventCollect. of Pap. - 45th AIAA/ASME/ASCE/AHS/ASC Struct., Struct. Dyn. and Mater. Conf.; 12th AIAA/ASME/AHS Adapt. Struct. Conf.; 6th AIAA Non-Deterministic Approaches Forum; 5th AIAA Gossamer Spacecraft Forum - Palm Springs, CA, United States
Duration: Apr 19 2004Apr 22 2004

Other

OtherCollect. of Pap. - 45th AIAA/ASME/ASCE/AHS/ASC Struct., Struct. Dyn. and Mater. Conf.; 12th AIAA/ASME/AHS Adapt. Struct. Conf.; 6th AIAA Non-Deterministic Approaches Forum; 5th AIAA Gossamer Spacecraft Forum
CountryUnited States
CityPalm Springs, CA
Period4/19/044/22/04

Fingerprint

Optimal design

ASJC Scopus subject areas

  • Architecture

Cite this

Missoum, S., Chaabane, S. B., & Sudret, B. (2004). Handling bifurcations in the optimal design of transient dynamic problems. In Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference (Vol. 7, pp. 5432-5441)

Handling bifurcations in the optimal design of transient dynamic problems. / Missoum, Samy; Chaabane, Samir Ben; Sudret, Bruno.

Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. Vol. 7 2004. p. 5432-5441.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Missoum, S, Chaabane, SB & Sudret, B 2004, Handling bifurcations in the optimal design of transient dynamic problems. in Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. vol. 7, pp. 5432-5441, Collect. of Pap. - 45th AIAA/ASME/ASCE/AHS/ASC Struct., Struct. Dyn. and Mater. Conf.; 12th AIAA/ASME/AHS Adapt. Struct. Conf.; 6th AIAA Non-Deterministic Approaches Forum; 5th AIAA Gossamer Spacecraft Forum, Palm Springs, CA, United States, 4/19/04.
Missoum S, Chaabane SB, Sudret B. Handling bifurcations in the optimal design of transient dynamic problems. In Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. Vol. 7. 2004. p. 5432-5441
Missoum, Samy ; Chaabane, Samir Ben ; Sudret, Bruno. / Handling bifurcations in the optimal design of transient dynamic problems. Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. Vol. 7 2004. pp. 5432-5441
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