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作 者:Ye TIAN Yuhang HUO Tielin SHI Qi XIA
机构地区:[1]State Key Laboratory of Digital Manufacturing Equipment and Technology,Huazhong University of Science and Technology,Wuhan 430074,China [2]State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,China
出 处:《Chinese Journal of Aeronautics》2021年第4期153-159,共7页中国航空学报(英文版)
基 金:the National Natural Science Foundation of China(No.51975227);the Natural Science Foundation for Distinguished Young Scholars of Hubei Province(No.2017CFA044)。
摘 要:In the design optimization of variable stiffness composites,manufacturing constraints imposed by the automated fiber placement technology must be considered.In the present paper,two filters are proposed to address this issue,and they are incorporated into the Shepard interpolation-based design optimization framework developed in our previous studies.The fiber angle arrangement of a composite is represented by a continuous function that interpolates fiber angles at scattered design points.Two filters are appointed for each design point to deal with two typical manufacturing constraints,i.e.,fiber curvature and gap/overlap.At each design point,the sensitivity is first filtered in a rectangular region around this point,and by this means the fiber curvature is controlled;then in another rectangular region around this design point,the filtered sensitivities are averaged,and the result is used to update the corresponding design variable.Several numerical examples are investigated,and the results show that the proposed method is effective.
关 键 词:Composite laminates Design optimization Fiber angle FILTER Manufacturing constraints
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