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

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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.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Solid Mechanics, Technical University of Denmark, Nils Koppels Allé, Building 404, 2800 Kgs., Lyngby, Denmark

    C.B.W. Pedersen

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Correspondence to C.B.W. Pedersen.

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Pedersen, C. Topology optimization design of crushed 2D-frames for desired energy absorption history. Struct Multidisc Optim 25, 368–382 (2003). https://doi.org/10.1007/s00158-003-0282-y

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