Journal of Materials Engineering and Performance ( IF 2.3 ) Pub Date : 2020-09-17 , DOI: 10.1007/s11665-020-04941-4 Qihua Ma , Boyan Dong , Yibin Zha , Jiarui Sun , Xuehui Gan , Ming Cai , Tianjun Zhou
In order to obtain a hybrid tube with better energy absorption performance under both three-point bending and axial compression, multi-objective optimization for energy absorption of carbon fiber-reinforced plastics (CFRP)/aluminum (CFRP/AL) hybrid circular tubes was presented in this paper. Experiments and finite element model (FEM) of the hybrid circular tubes subjected to three-point bending and axial compression were performed, and the finite element models were validated. The effects of fiber filament winding angle (θ) and aluminum wall thickness (t) on energy absorption characteristic of the hybrid tube under three-point bending and axial compressive were discussed by FEM. The results show that θ and t have different effects on the specific energy absorption (SEA) of the hybrid tube under three-point bending and axial compression, respectively. A five-order polynomial response surface (PRS) and artificial neural network (ANN) were used to connect variables (θ and t) and the objective (SEA), respectively. It was found that the fitting accuracy of ANN was better. The non-dominated sorting genetic algorithm-II (NSGAII) was applied to obtain optimal results in the form of Pareto frontier solutions. The specific energy absorption of the optimized hybrid tube (θ = 24°, t = 1.45 mm) verified by simulation under three-point bending and axial compression is 1.11 kN/kg and 45.59 kN/kg, respectively. The hybrid tube exhibits better specific energy absorption under both loads.
中文翻译:
碳纤维增强塑料/铝复合圆形管在横向和轴向载荷下的能量吸收多目标优化
为了获得在三点弯曲和轴向压缩下均具有更好的能量吸收性能的混合管,提出了碳纤维增强塑料(CFRP)/铝(CFRP / AL)混合圆形管能量吸收的多目标优化。在本文中。进行了混合圆管三点弯曲和轴向压缩的试验和有限元模型,并对有限元模型进行了验证。通过有限元分析,探讨了纤维丝缠绕角(θ)和铝壁厚(t)对混合管三点弯曲和轴向压缩下能量吸收特性的影响。结果表明,θ和t对混合管在三点弯曲和轴向压缩下的比能吸收(SEA)有不同的影响,分别。五阶多项式响应面(PRS)和人工神经网络(ANN)分别用于连接变量(θ和t)和目标(SEA)。发现人工神经网络的拟合精度较好。应用非支配排序遗传算法-II(NSGAII)以帕累托前沿解的形式获得最佳结果。优化混合管的比吸收率(θ = 24°,t = 1.45 mm)在三点弯曲和轴向压缩下通过仿真验证分别为1.11 kN / kg和45.59 kN / kg。混合管在两种负载下均表现出更好的比能量吸收。