摘要
为研究热塑性纤维金属层板的抗冲击性能,通过拉伸实验测量所用复合材料力学性能,为有限元仿真建模提供材料参数。采用2024-T3铝合金与玻璃纤维增强改性聚酰胺6复合材料预浸料制备正交铺层热塑性纤维金属层板,并对其进行落锤低速冲击实验。利用LS-DYNA建立数值仿真模型并计算,仿真结果与实验结果误差在10%以内,证明建模方法与材料参数的准确性。针对每层铝板厚度与复合材料铺层层数,选取碰撞峰值力PCF、等厚度吸能量TEA和层合板质量M为目标函数,对纤维金属层板进行多目标优化设计。结果表明:优化后纤维金属层板抗冲击性能与轻量化指标均得到有效提升,为工程实际应用提供参考。
In order to study the impact resistance of thermoplastic fiber metal laminates,this paper measures the mechanical properties of the composites through tensile tests,and provides the material parameters for finite element simulation modeling.The orthogonal layered thermoplastic fiber metal laminates are prepared by using 2024-T3 aluminum alloy and reinforced glass fiber modified polyamide six composite prepregs.A numerical simulation model is established by LS-DYNA,and the errors between the simulation results and the experimental results are controlled within 10%,which proves the accuracy of the modeling method and material parameters.Impact peak force(PCF),energy absorption of equal thickness(TEA)and laminate mass(M)are selected as the objective functions to carry out multi-objective optimization design of the fiber metal laminates according to the thickness of each layer of the aluminum plates and the number of layers of the composite materials.The results show that the impact resistance and lightweight indexes of the optimized fiber metal laminates improve effectively,which provides a reference for practical engineering application.
作者
亓昌
付利荣
刘海涛
杨姝
QI Chang;FU Lirong;LIU Haitao;YANG Shu(State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,China;Ningbo Institute,Dalian University of Technology,Ningbo 315016,China;China North Vehicle Research Institute,Beijing 100072,China)
出处
《重庆理工大学学报（自然科学）》
CAS
北大核心
2023年第4期115-122,共8页
Journal of Chongqing University of Technology：Natural Science
基金
汽车安全与节能国家重点实验室开放基金项目(KF2003)。
关键词
热塑性纤维金属层板
低速冲击
数值模拟
多目标优化
reinforced thermoplastic fiber metal laminates
low speed impact
numerical simulation
multi-objective optimization
