Structural and Multidisciplinary Optimization
, Volume 48, Issue 1, pp 149171
First online:
Aerothermoelastic topology optimization with flutter and buckling metrics
 Bret StanfordAffiliated withU.S. Air Force Research Laboratory, WrightPatterson AFB Email author
 , Philip BeranAffiliated withU.S. Air Force Research Laboratory, WrightPatterson AFB
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This work develops a framework for SIMPbased topology optimization of a metallic panel structure subjected to designdependent aerodynamic, inertial, elastic, and thermal loads. Multiphysics eigenvaluebased design metrics such as thermal buckling and dynamic flutter are derived, along with their adjointbased design derivatives. Locating the flutter point (Hopfbifurcation) in a precise and efficient manner is a particular challenge, as is outfitting the optimization problem with sufficient constraints such that the critical flutter mode does not switch during the design process. Results are presented for flutteroptimal topologies of an unheated panel, thermal bucklingoptimal topologies, and flutteroptimality of a heated panel (where the latter case presents a topological compromise between the former two). The effect of various constraint boundaries, temperature gradients, and (for the flutter of the heated panel) thermal load magnitude are assessed. Offdesign flutter and thermal buckling boundaries are given as well.
Keywords
Panel flutter Topology optimization Aerothermoelasticity Title
 Aerothermoelastic topology optimization with flutter and buckling metrics
 Journal

Structural and Multidisciplinary Optimization
Volume 48, Issue 1 , pp 149171
 Cover Date
 201307
 DOI
 10.1007/s001580130885x
 Print ISSN
 1615147X
 Online ISSN
 16151488
 Publisher
 SpringerVerlag
 Additional Links
 Topics
 Keywords

 Panel flutter
 Topology optimization
 Aerothermoelasticity
 Industry Sectors
 Authors

 Bret Stanford ^{(1)}
 Philip Beran ^{(1)}
 Author Affiliations

 1. U.S. Air Force Research Laboratory, WrightPatterson AFB, OH, 45433, USA