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Structural and Multidisciplinary Optimization

, Volume 25, Issue 5–6, pp 368–382 | Cite as

Topology optimization design of crushed 2D-frames for desired energy absorption history

  • C.B.W. PedersenEmail author
Research paper

Abstract

The present work deals with topology optimization for obtaining a desired energy absorption history of a crushed structure. The optimized energy absorbing structures are used to improve the crashworthiness of transportation vehicles. The ground structure consists of rectangular 2D-beam elements with plastic hinges. The elements can undergo large rotations, so the analysis accommodates geometric nonlinearities. A quasi-static nonlinear finite element solution is obtained with an implicit backward Euler algorithm, and the analytical sensitivities are computed by the direct differentiation method.

Keywords

topology optimization large displacements plastic hinges analytical sensitivity analysis energy absorption crashworthiness 

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Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  1. 1.Department of Mechanical Engineering, Solid MechanicsTechnical University of DenmarkLyngbyDenmark

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