空气弹簧内部压缩气体热迟滞等效力学模型  

Thermal Hysteresis Equivalent Mechanical Model of Compressed Air Inside Air Springs

作　　者：陈俊杰 徐进嫄 沈钰杰[2] 吕辉 Chen Junjie;Xu Jinyuan;Shen Yujie;Lu Hui(School of Mechanical and Electrical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000;School of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang 212013;School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510641)

机构地区：[1]江西理工大学机电工程学院,赣州341000 [2]江苏大学汽车工程研究院,镇江212013 [3]华南理工大学机械与汽车工程学院,广州510641

出　　处：《汽车工程》2024年第7期1294-1301,共8页Automotive Engineering

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

摘　　要：空气弹簧内部压缩空气的热交换效应导致其力学特性具有较强的热迟滞性和频率相关性。本文建立了一种热迟滞等效力学模型来描述空气弹簧内部压缩气体的能量交换过程。结合橡胶气囊模型,构建了涵盖橡胶气囊迟滞和压缩空气热迟滞的空气弹簧迟滞力学特性模型,并给出了模型关键参数的辨识方法。实验表明空气弹簧力学迟滞环和动刚度最大误差分别小于3.3%和6.7%,验证了迟滞力学特性模型的准确性。最后,揭示了压缩空气热迟滞随频率变化的内在规律。研究结果为查明空气弹簧的迟滞非线性机理及其有效利用提供了理论支撑。The heat exchange effect of internal compressed air leads to strong thermal hysteresis and fre-quency correlation of air springs’mechanical properties.Therefore,a thermal hysteresis equivalent mechanical model is constructed to describe the energy exchange process of compressed air inside air springs in this paper.Based on the rubber airbag modal,an air spring hysteresis mechanical characteristic model covering both rubber air-bag hysteresis and compressed air thermal hysteresis is constructed,and an identification method for the key param-eters of the model is provided.The experiments show that the maximum errors of the hysteresis loop and dynamic stiffness are less than 3.3%and 6.7%,respectively,verifying the accuracy of the hysteresis mechanical characteris-tic model.Finally,the inherent law of the thermal hysteresis of compressed air with frequency varying is revealed.The research results provide theoretical support for identifying the hysteresis nonlinear mechanism of air springs and its effective utilization.

关 键 词：压缩空气 热交换效应 迟滞特性 频率相关性 空气弹簧 

分 类 号：U463.334.2[机械工程—车辆工程]