A review of optimization of structures subjected to transient loads |
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Authors: | Byung-Soo Kang Gyung-Jin Park Jasbir S Arora |
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Affiliation: | (1) Department of Aerospace and Mechanical Engineering, University of Notre Dame, 360 Fitzpatrick Hall, Notre Dame, IN 46556, USA;(2) Division of Mechanical and Information Management Engineering, College of Engineering Science, Hanyang University, 1271, Sa-1, Sangnok-gu, Ansan, Gyeonggi-do, 426-791, South Korea;(3) Department of Civil and Environmental Engineering, University of Iowa, Iowa City, IA 52242, USA |
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Abstract: | Various aspects of structural optimization techniques under transient loads are extensively reviewed. The main themes of the
paper are treatment of time-dependent constraints, calculation of design sensitivity, and approximation. Each subject is reviewed
with corresponding papers that have been published since the 1970s. The treatment of time-dependent constraints in both the
direct method and the transformation method is discussed. Two ways of calculating design sensitivity of a structure under
transient loads are discussed—direct differentiation method and adjoint variable method. The approximation concept mainly
focuses on the response surface method in crashworthiness and local approximation with the intermediate variables. Especially,
a method using the equivalent static load is discussed as an approximation method. It takes advantage of the well-established
static response optimization. The structural optimization in flexible multibody dynamic systems is reviewed in the viewpoint
of the above three themes. |
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Keywords: | Dynamic response optimization Review Time-dependent constraint Design sensitivity Approximation Equivalent static load Flexible multibody dynamic systems |
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