Chen Yu1, Qifu Wang1, ∗, Chao Mei1, Zhaohui Xia1
CMES-Computer Modeling in Engineering & Sciences, Vol.122, No.3, pp. 779-803, 2020, DOI:10.32604/cmes.2020.09363
Abstract This paper proposes a multiscale isogeometric topology optimization
(ITO) method where the configuration and layout of microstructures are optimized
simultaneously. At micro scale, a shape deformation method is presented to transform
a prototype microstructure (PM) for obtaining a series of graded microstructures (GMs),
where microstructural skeleton based on the level set framework is applied to retain
more topology features and improve the connectability. For the macro scale calculation,
the effective mechanical properties can be estimated by means of the numerical
homogenization method. By adopting identical non-uniform rational basis splines
(NURBS) as basis functions for both parameterized level set model and… More >
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