Topology optimization of continuous fiber-reinforced composite (CFRC) structures considering the residual stress in additive manufacturing

Abstract

AbstractThis work proposes a topology optimization method for continuous fiber-reinforced composite (CFRC) structures with additive manufacturing (AM), which realizes the concurrent optimization of material layout and fiber orientation. The residual stress caused by AM process is constrained to avoid the failure of warpage and distortion. The inherent strain method (ISM) is applied to simplify the calculation of residual stress, the Tsai–Wu criterion and P-norm are incorporated to realize structural failure prediction and local constraint aggregation. Several typical instances are adopted to verify the effectiveness of proposed method, which provides a novel solution for the optimization of CFRC structures fabricated by AM.Keywords: Continuous fiber reinforced compositetopology optimizationfiber orientation optimizationadditive manufacturingresidual stress constraint Authors' contributionsYongjia Dong: conceptualization, methodology, software, writing-original draft, writing review & editing, visualization. Hongling Ye: methodology, writing review & editing, supervision. Jiaxi Yang: methodology, software. Jicheng Li: software. Weiwei Wang: validation.Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this article.Additional informationFundingThis work was supported by the National Natural Science Foundation of China (11872080) and Natural Science Foundation of Beijing, China (3192005). This work was supported by the open project of Peking University Nanchang Innovation Institute.