FEM-Based Structural Optimization with Respect to Shakedown Constraints

Authors:
Michael Heitzer
Affiliations:
-
Venue:
ICCS '02 Proceedings of the International Conference on Computational Science-Part I
Year:
2002

Citing 5
Cited 0

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Structural Optimization with FEM-based Shakedown Analyses

Journal of Global Optimization

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Abstract

In this paper, a mathematical programming formulation is presented for the structural optimization with respect to the shakedown analysis of 3-D perfectly plastic structures on basis of a finite element discretization. A new direct algorithm using plastic sensitivities is employed in solving this optimization formulation. The numerical procedure has been applied to carry out the shakedown analysis of pipe junctions under multi-loading systems. The computational effort of the new approach is much lower compared to so called derivative-free search methods.