Damage approach

A new method for topology optimization with local stress constraints

Journal article (2015)
Department
Precision and Microsystems Engineering (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: This article is published with open access at Springerlink.com
Topology optimization Stress constraints Singular optima Constraint aggregation Local constraints
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Published Date

22-12-2015

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Source:

Structural and Multidisciplinary Optimization, 2015

ISSN:

1615-147X

Faculty

Mechanical, Maritime and Materials Engineering

Department

Precision and Microsystems Engineering

Abstract

In this paper, we propose a new method for topology optimization with local stress constraints. In this method, material in which a stress constraint is violated is considered as damaged. Since damaged material will contribute less to the overall performance of the structure, the optimizer will promote a design with a minimal amount of damaged material. We tested the method on several benchmark problems, and the results show that the method is a viable alternative for conventional stress-based approaches based on constraint relaxation followed by constraint aggregation.