期刊
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
卷 268, 期 -, 页码 614-631出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cma.2013.10.022
关键词
Topology optimization; Continuum damage mechanics; Coupled adjoint sensitivity analysis
资金
- National Science Foundation's Division of Civil, Mechanical and Manufacturing Innovation [CMMI-1334857]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1334857] Funding Source: National Science Foundation
This paper presents a novel framework for performing topology optimization of structures while accounting for material damage. A quasi-static non-local brittle damage model is coupled to a linear finite element analysis code for modeling the structural response and the initiation and propagation of damage. The optimization problem is parameterized using SIMP variables, and failure mitigation is achieved through the enforcement of constraints on the maximum local damage intensity. We derive a computationally efficient adjoint sensitivity formulation that accounts for the path-dependence of the coupled analysis problem. The algorithm is validated through a series of numerical examples. (C) 2013 Elsevier B.V. All rights reserved.
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