Lu Taoye, Shen Hui-Shen, Wang Hai, Chen Xiuhua, Feng Miaolin
Zhe Jiang Key Laboratory of General Aviation Operation Technology, General Aviation Institute of Zhejiang Jiande, Jiande 311600, China.
School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai 200240, China.
Materials (Basel). 2023 Jun 23;16(13):4550. doi: 10.3390/ma16134550.
Inspired by the bionic Bouligand structure, helicoidal carbon fiber-reinforced polymer composite (CFRPC) laminates have been proven to own outstanding out-of-plane mechanical properties. This work aims to further explore the excellent bending characteristics of helicoidal CFRPC laminated plates and find out the optimal helicoidal layup patterns. The optimization design of laminated plates stacked with single-form and combination-form helicoidal layup sequences are carried out by using the finite element method (FEM) and adaptive simulated annealing (ASA) optimization algorithm on the Isight platform. Then, the nonlinear bending responses of optimal helicoidal CFRPC laminated plates are investigated via the FEM for the first time. The helicoidal CFRPC laminated plates under three different types of boundary conditions subjected to transverse uniformly distributed load are considered. The numerical results reveal that the combination-form helicoidal layup sequences can decrease the dimensionless bending deflection of laminated plates by more than 5% compared with the quasi-isotropic plate and enhance the out-of-plane bending characteristics of CFRPC laminated plates effectively. The boundary conditions can significantly influence the nonlinear bending responses of helicoidal CFRPC laminated plates.
受仿生布利冈结构的启发，螺旋碳纤维增强聚合物复合材料（CFRPC）层压板已被证明具有出色的面外力学性能。这项工作旨在进一步探索螺旋CFRPC层压板优异的弯曲特性，并找出最佳的螺旋铺层模式。通过在Isight平台上使用有限元方法（FEM）和自适应模拟退火（ASA）优化算法，对采用单一形式和组合形式螺旋铺层顺序堆叠的层压板进行了优化设计。然后，首次通过有限元方法研究了最佳螺旋CFRPC层压板的非线性弯曲响应。考虑了在三种不同边界条件下承受横向均匀分布载荷的螺旋CFRPC层压板。数值结果表明，与准各向同性板相比，组合形式的螺旋铺层顺序可使层压板的无量纲弯曲挠度降低5%以上，并有效增强CFRPC层压板的面外弯曲特性。边界条件会显著影响螺旋CFRPC层压板的非线性弯曲响应。
