商用车膜式空气弹簧静刚度的有限元分析  

Finite Element Analysis of Static Stiffness of Diaphragm Air Spring for Commercial Vehicle

作　　者：荣英飞 邱春文 秦陆 刘永强 RONG Yingfei;QIU Chunwen;QIN Lu;LIU Yongqiang(Prinx Chengshan(Shandong)Tire Co.,Ltd,Rongcheng 225006,China)

机构地区：[1]浦林成山(山东)轮胎有限公司,山东荣成225006

出　　处：《橡胶科技》2023年第8期373-377,共5页Rubber Science and Technology

摘　　要：以商用车底盘用膜式空气弹簧(简称膜式空气弹簧)为研究对象,对其静刚度进行有限元分析,并与试验结果进行对比。结果表明:采用流体腔法表征气囊内腔气体压力更符合膜式空气弹簧的实际工作过程;采用膜单元法和嵌入单元法对膜式空气弹簧气囊囊皮进行建模,对其静刚度曲线的整体趋势影响很小,但在大行程工况下静刚度存在差异;为了更好地反映气囊囊皮结构对膜式空气弹簧静刚度的影响,推荐采用流体腔法和嵌入单元法进行膜式空气弹簧静刚度仿真。Taking the diaphragm air spring of commercial vehicle chassis(referred to diaphragm air spring)as the research object,the static stiffness of the diaphragm air spring was analyzed by the finite element method and compared with the test results.The results showed that characterization of the air pressure in the airbag cavity by using the fluid cavity method fitted in better with the actual working process of the diaphragm air spring.It was found that,when the modeling of the airbag skin of the diaphragm air spring was carried out by using the membrane element method and embedded element method,the overall trend of the simulated result of the static stiffness curve was in good agreement with the experimental testing result;however,the simulated result of the static stiffness under large stroke conditions showed significant deviation from the experimental testing result.Therefore,the fluid cavity method and embedded element method were recommended for the simulation of the static stiffness of diaphragm air springs in order to better reflect the influence of the airbag skin structure on the static stiffness.

关 键 词：膜式空气弹簧 空气悬架 静刚度 有限元分析 

分 类 号：TQ336.42[化学工程—橡胶工业]