车载大容量天然气气瓶框架结构设计  

Frame Structure Design of Vehicle-mounted Large Capacity Natural Gas Cylinder

作　　者：韩忠冠[1] 李健 张欣 潘婷婷 HAN Zhongguan;LI Jian;ZHANG Xin;PAN Tingting(College of Aeronautics and materials,Anhui Institute of Mechanical and Electrical Technology,Wuhu 241000,China;Wuhu Qinhui Technology Co.Ltd.,Wuhu 241000,China)

机构地区：[1]安徽机电职业技术学院航空与材料学院,安徽芜湖241000 [2]芜湖勤惠科技有限公司,安徽芜湖241000

出　　处：《新乡学院学报》2021年第3期53-56,76,共5页Journal of Xinxiang University

基　　金：2018年安徽省高校自然科学研究重点项目(KJ2018A0864);安徽省创新发展行动计划(XM-6)。

摘　　要：将车载大容量天然气气瓶框架结构进行轻量化设计。依据模态分析理论构建有限元分析模型,对框架进行前4阶模态分析。第1阶模态频率为17.3 Hz,高于非簧载质量固有频率,2阶、3阶、4阶模态频率变化不大,避开外界激励振动,不会出现激励频率耦合现象。按3种典型强度冲击工况对框架进行强度分析,垂向冲击、紧急制动、转弯三种工况下的强度均小于设计许应强度。通过振动实验平台测试和30000 km综合路面测试,产品没有发现损坏现象或外观缺陷。The purpose of this paper is to lightweight the frame structure of large capacity natural gas cylinder.Based on the modal analysis theory,the finite element analysis model is constructed and the previous four modal analyses are carried out on the frame.The first modal frequency is 17.3 Hz,higher than the natural frequency of unsprung mass;the second,the third and the fourth modal frequencies do not change much,which avoid the external excitation vibration.And excitation frequency coupling phenomenon doesn’t occur.According to three typical shock conditions,the frame strength is analyzed.The conclusion is made that the strength of vertical impact,emergency braking and turning are all weaker than the design allowable strength.No damage or appearance defects were found through vibration test platform and 30000 km comprehensive road test.

关 键 词：气瓶框架 模态分析 轻量化 

分 类 号：TH122[机械工程—机械设计及理论]