摘要
全地形车行驶条件恶劣且机动性要求高,因此对其疲劳可靠性及轻量化提出了更高的要求。本文提出了一种碳纤维-金属-碳纤维复合材料层板的车身轻量化方法。通过对复合材料层板进行拉伸试验,获取了复合材料层板本构模型并进行了验证;在此基础上,结合全地形车高强钢车身边界约束条件建立了复合材料层板结构模型,采用全局响应面法对复合材料层板进行了参数多目标优化;将优化后的复合材料层板应用至全地形车车身进行轻量化,在相同的边界条件下进行了模态分析、刚度分析、强度分析和动力学仿真分析;最后采用局部复合材料层板替换法进行了冲击路面典型工况仿真分析及试验验证。结果表明,复合材料层板轻量化车身在保证静态和动态刚度与强度基础上,车身减重283.3kg,减重率达34.9%。
The driving conditions of all-terrain vehicles are harsh and the maneuverability requirements are high,so they put forward higher requirements for fatigue reliability and light weight.In this paper,a body lightweighting method of carbon fiber-metal-carbon fiber composite laminates is proposed.Through the tensile test of the composite laminates,the constitutive model of the composite laminates is obtained and verified.On this basis,combined with the boundary constraints of the high-strength steel body of all-terrain vehicles,the composite laminate structure model is established,and the global response surface method is used to optimize the parameters of the composite laminates.The optimized composite laminate is applied to the body of the all-terrain vehicle for lightweighting,and the modal analysis,stifness analysis,strength analysis and dynamic simulation analysis are carried out under the same boundary conditions.Finally,the local composite laminate replacement method is used to carry out the simulation analysis and test verification of the typical working conditions of the impact pavement.The results show that while ensuring the static and dynamic stiffness and strength,the weight of the composite laminate lightweight body is reduced by 283.3kg,and the weight reduction rate is 34.9%.
作者
邹喜红
邱伟本
傅雷
袁冬梅
张艺巍
王秦锋
谭云龙
ZOU Xihong;QIU Weiben;FU Lei;YUAN Dongmei;ZHANG Yiwei;WANG Qinfeng;TAN Yunlong(Key Laboratory of Advanced Manufacturing Technology for Auto Parts,Ministry of Education,Chongqing University of Technology,Chongqing 400054,China;Chongqing Qingyan Polytechnic Automobile Testing Service Co.,Ltd.,Chongqing 401329,China;Chongqing Jialing Whole Region Motor Vehicles Co.,Ltd.,Chongqing 402560,China)
出处
《机械设计与研究》
CSCD
北大核心
2024年第3期141-146,162,共7页
Machine Design And Research
基金
重庆英才计划“包干制”项目(cstc2022ycjh-bgzxm0214)。
关键词
碳纤维复合材料
车身
轻量化
动力学仿真
carbon fiber composite materials
bodywork
lightweighting
dynamics simulation
作者简介
邹喜红(1976-),男,博士,教授,主要研究方向:新能源、智能网联汽车及其零部件模拟试验与开发技术研究,已发表论文50余篇。E-mail:13452855915@163.com;通讯作者:邱伟本。
