Papers › A novel multi-stage concurrent topology optimization for variable-stiffness structures
A novel multi-stage concurrent topology optimization for variable-stiffness structures
Yaya Zhanga, Hu Wang, Jichao Yin, Shuhao Li, Mengzhu Yang
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The concurrent optimization of topology and fibre orientation is a promising approach to pursue higher strength and lighter weight of variable-stiffness structure. This study proposes a novel discrete-continuous scheme for the concurrent optimization. Considering the global convergence, Discrete Material Optimization (DMO) is firstly utilized to select a dominant angle for each element from several predefined candidate angles. However, it is still difficult to obtain excellent fibre angle convergence due to difficulty in selection of candidate materials for some elements. Therefore, the Sequential Binary-Phase Topology Optimization is proposed to guarantee the uniqueness of the element to candidate angle mapping. Moreover, to obtain better mechanical properties, Continuous Fibre Angle Optimization (CFAO) with spatial filter is introduced to optimize fibre continuity. Several classic numerical examples are used to verify the excellent performance of the proposed method in terms of fibre angle convergence and stable optimization ability.
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