基于可行域调整的多相材料结构拓扑优化设计

doi:10.7527/S1000-6893.2018.22023

Abstract

Abstract: For the multi-phase material structural compliance topology optimization problem and the existence of multiple local optimization solutions, a new solution method is proposed, and the ability of the method to get multiple local optimization solutions and to find a better optimization solution are investigated. Based on the Rational Approximation of Material Properties (RAMP) model, the feasible domain adjustment technology is introduced to construct a model for multi-phase material structural topology optimization model and its approximate model. A modified alternating active-phase algrithom is proposed, in which the multi-phase material topology optimization problem is divided into some two-phase topology optimization sub-problems, which may include two real material volume constraints. And the sub-problems are solved by the smooth dual algorithm. Compared with the existed methods, the proposed method can obtain a different local optimal topology starting from a different initial topology, and can also obtain a better local optimal multi-phase material topology by using various initial topologies. And the proposed method gives a valuable idea and a multiple design approach to solve the multi-material structural topology optimization problem.

Key words: structural topology optimization, feasible domain adjustment, multi-phase material, alternating active-phase algorithm, smooth dual algorithm

CLC Number:

YU Liaohong, RONG Jianhua, TANG Chengtie, LI Fangyi. Multi-phase material struclural topology optimization design based on feasible domain adjustment[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(9): 222023-222039.

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Multi-phase material struclural topology optimization design based on feasible domain adjustment

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