基于活塞形状的空气弹簧动特性分析与参数优化

doi:10.13229/j.cnki.jdxbgxb20170282

摘要/Abstract

摘要： 考虑活塞圆弧过渡,采用曲面积分按活塞设计形状分阶段推导空气弹簧动特性精确模型,分析了活塞主要设计参数对空气弹簧动特性的影响规律,并进行了试验设计(DOE)灵敏度分析和参数优化。结果表明,该建模方法能较准确地预测空气弹簧动特性,为汽车用空气弹簧刚度设计匹配提供了一种较为经济实用的预估方法;基于空气弹簧活塞结构参数优化可以使空气弹簧在正常工作压力、推荐工作高度范围内工作的同时兼顾车辆自身的舒适性和空气弹簧的综合使用性能,具有一定的经济价值。

关键词: 车辆工程, 膜式空气弹簧, 动态特性, 活塞设计, 参数优化

Abstract: The precise design of the dynamic stiffness of air spring is one of the key issues to accurately match the dynamic stiffness of the vehicle in the predevelopment stage. Considering the transition of the piston circular area, a method is proposed to get the accurate dynamic characteristics model of the air spring, which is based on the design of the piston shape in different stages according to the surface integral. The influence of the main design parameters on the dynamic characteristics of the air spring is studied. The experimental design sensitivity analysis and parameter optimization are carried out. Results show that the model can accurately predict the dynamic characteristics of the air spring and provide an economical and practical prediction method of the stiffness design of the air spring used in automobiles. When the air spring is in normal working pressure and recommended working height range, the optimization of structural parameters of the air spring piston can simultaneously take into account the comfort of vehicle itself and the comprehensive performance of the air spring and has certain economic value.

Key words: vehicle engineering, diaphragm air spring, dynamic characteristics, piston design, parameter optimization

中图分类号:

TH212

李静, 丁明慧, 李立刚, 陈立军. 基于活塞形状的空气弹簧动特性分析与参数优化[J]. 吉林大学学报(工学版), 2018, 48(2): 355-363.

LI Jing, DING Ming-hui, LI Li-gang, CHEN Li-jun. Dynamic characteristics analysis and optimization of air spring based on the piston shape[J]. 吉林大学学报(工学版), 2018, 48(2): 355-363.

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