纤维增强复合材料在汽车覆盖件中的应用  

Application of fiber reinforced composite in auto-body panel

作　　者：叶辉[1] 刘畅[1] 闫康康 YE Hui;LIU Chang;YAN Kang-kang(State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130022,China;Technology Center,Shanxi Automobile Holding Group Co.LTD,Xi'an 710000,China)

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室,长春130022 [2]陕西汽车控股集团有限公司技术中心,西安710200

出　　处：《吉林大学学报（工学版）》2020年第2期417-425,共9页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家重点研发计划项目(2016YFB0101601).

摘　　要：采用碳纤维和玻璃纤维两种增强材料与环氧树脂基体材料,对汽车发动机罩进行了铺层结构设计、样件制造和性能对比分析。研究表明:纤维增强发动机罩在满足刚度、模态要求的同时能有效减轻质量,实现发动机罩减重51.2%。在不同工况下,将发动机罩自由模态、横向弯曲刚度、扭转刚度的仿真结果与试验结果和原钢制件发动机罩性能进行了对比,验证了设计的有效性。对复合材料发动机罩铺层优化设计进行了研究,通过优化发动机罩质量相对于初始设计减重9.7%,充分发挥了纤维复合材料在汽车轻量化方面的优势。In this study,carbon fiber and glass fiber reinforced materials and epoxy resin matrix materials were used to design the layer structure of automobile engine hood. Sample of automobile engine hood is manufactured and comparative analysis of its performance is conducted. The results show that the fiber reinforced engine hood can not only meet the requirements of stiffness and modal,but also effectively reduce the weight of the engine hood. Under different working conditions,the simulation results of the free modal,transverse bending stiffness and torsional stiffness of the engine hood were compared with the experimental results and the performance of the original steel engine hood,which verified the effectiveness of the design. The optimization design of the composite engine hood was further studied. Compared with the initial design,the weight of the engine hood was further reduced by 9.7% through optimization. The design gives full play to the advantages of the fiber composite material in automobile lightweight.

关 键 词：车辆工程 纤维复合材料 轻量化 发动机罩 优化设计 

分 类 号：U465.6[一般工业技术—材料科学与工程]