复杂轮廓膜式空气弹簧非线性结构参数统一模型  

Unified model of nonlinear structural parameters for rolling lobe air spring with complex contour

作　　者：陈俊杰 张盛蓬 刘昊 袁显举 李国全 CHEN Junjie;ZHANG Shengpeng;LIU Hao;YUAN Xianju;LI Guoquan(School of Mechanical and Electrical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;School of Automotive Engineering,Hubei University of Automotive Technology,Shiyan 442002,China;Technical Center,Guangdong Yiconton Air Spring Co.,Ltd.,Yunfu 527300,China)

机构地区：[1]江西理工大学机电工程学院,江西赣州341000 [2]湖北汽车工业学院汽车工程学院,湖北十堰442002 [3]广东溢康通空气弹簧有限公司技术中心,广东云浮527300

出　　处：《振动与冲击》2023年第23期240-252,共13页Journal of Vibration and Shock

基　　金：国家自然科学基金(51905240,52362053);江西省自然科学基金资助项目(20224BAB204039,20202BABL204035)。

摘　　要：结构参数是影响腹式空气弹簧力学性能的关键因素,复杂活塞轮廓的膜式空气弹簧具有结构参数复杂、力学性能非线性强及承载力随工作高度不断变化的特点。建立基于关键设计参量的复杂轮廓膜式空气弹簧非线性结构参数统一模型是设计阶段分析、优化空气弹簧力学特性的重要途径;针对具有直线与圆弧复合的复杂活塞轮廓的膜式空气弹簧结构参数建模问题、橡胶气囊外径随弹簧高度动态变化的问题和复杂活塞轮廓所带来的力学性能非线性问题等,以直线段轮廓内锥角、圆弧段轮廓半径为关键设计参量,建立了复杂活塞轮廓的膜式空气弹簧非线性结构参数统一模型,揭示了关键设计参量对结构参数、刚度的影响规律。结果表明:运用所建立的统一模型所预测的膜式空气弹簧结构参数与试验结果最大相对误差为10.98%,不同压强下静刚度相对误差均小于7%,承载力最大相对误差均小于9%,证明了结构参数统一模型的有效性;研究结果为活塞轮廓精细化设计及膜式空气弹簧的刚度、承载特性预测与优化提供了理论指导。Structural parameters are key factors affecting mechanical performance of rolling lob air spring(RLAS).Rolling lob air springs with complex piston contours have characteristics of complex structural parameters,strong nonlinear mechanical properties and constantly changing load-bearing capacity with variation of working height.It is an important way to establish a unified model of nonlinear structural parameters of rolling lob air springs with complex contour based on key design parameters for analyzing and optimizing mechanical properties of air spring at design stage.Here,aiming at the problem of structural parametric modeling of rolling lob air spring with complex piston contour composed of straight line and circular arc,the problem of outer diameter dynamic change of rubber airbag with variation of spring height and the problem of nonlinear mechanical performance caused by complex piston contour,taking inner cone angle of straight line segment contour and circular arc contour radius as key design parameters,the unified model of nonlinear structural parameters of rolling lob air spring with complex piston contour was established to reveal effects of key design parameters on structural parameters and stiffness.The results showed that the maximum relative error between structural parameters predicted by the unified model and test results is 10.98%,relative errors of static stiffness under different pressures are less than 7%,and maximum relative errors of load-bearing capacity are less than 9%to verify the effectiveness of the unified model of structural parameters;the study results provide a theoretical guidance for refined design of piston contour and prediction and optimization of stiffness and load-bearing characteristics of rolling lob air spring.

关 键 词：膜式空气弹簧 复杂轮廓 结构参数 统一模型 刚度特性 

分 类 号：U463.334.2[机械工程—车辆工程]