Abstract
Coated structures are composed of solid shell and cellular infill. This paper presents an efficient heterogeneous coated structure design framework. The global coated structure, graded microstructures (GMs) and their layout pattern will be optimized by carrying out a multi-step optimization at different length scales. First, an response function based microstructure optimization method is developed to design a family of connectable GMs, and the numerical homogenization method is used to determine the effective macroscopic properties (elasticity tensor) of these GMs. Then, an erosion-based coating approach is used to obtain an optimized coated structure. The thickness of the shell is assumed to be uniform, which is guaranteed by the improved two-step filtering process. During the optimization of coated structure, the properties of infill material are reasonably equivalent according to the GM with a specific volume fraction. The final step is to seek GMs’ best layout pattern. One numerical example is provided to illustrate the effectiveness of the method.
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Zheng, X., Chen, W. (2022). Topology Optimization of Heterogeneous Coated Structure with Connectable Microstructures. In: Duan, B., Umeda, K., Kim, Cw. (eds) Proceedings of the Eighth Asia International Symposium on Mechatronics. Lecture Notes in Electrical Engineering, vol 885. Springer, Singapore. https://doi.org/10.1007/978-981-19-1309-9_70
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DOI: https://doi.org/10.1007/978-981-19-1309-9_70
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Publisher Name: Springer, Singapore
Print ISBN: 978-981-19-1308-2
Online ISBN: 978-981-19-1309-9
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