An integrated optimization method that comprehensively considers draping factors such as fiber reorientations and cutting of layers is proposed for designing CFRP B-pillar reinforcement with a variable thickness. A laminate parameterization scheme, the local shared layer parameterization scheme (LSL-PS), is developed to parameterize the physical composition of laminates with variable-thickness. Kinematic draping simulations and preform designs are introduced to evaluate fiber reorientations and eliminate manufacturing defects. The optimization design of the B-pillar reinforcement is integrated with a LSL-PS, draping-simulation and preform-design, a RBF surrogate model and GA. At the same time, a comparative optimization without the consideration of draping factors is performed in parallel. The comparison results show that considering draping not only helps designers eliminate manufacturing defects but also helps to obtain a further weight reduction of 13.33% because fiber reorientations are fully utilized to improve the structural performance.

提出了一种综合优化方法，该方法综合考虑了诸如纤维重新定向和层切割之类的悬垂因素，以设计厚度可变的CFRP B柱加固。开发了层压板参数化方案，即局部共享层参数化方案（LSL-PS），以对厚度可变的层压板的物理成分进行参数化。引入了运动悬垂仿真和预成型件设计，以评估纤维的重新定向并消除制造缺陷。B柱加固的优化设计与LSL-PS，悬垂模拟和预成型件设计，RBF替代模型和GA集成在一起。同时，并行执行不考虑悬垂因子的比较优化。