液压缓冲器阻尼与冲击特性仿真分析  

Simulation Analysis on Damping and Impact Characteristics of Hydraulic Buffer

作　　者：方永寿 陈轶杰[3] 张亚峰[3] 代健健 FANG Yong-shou;CHEN Yi-jie;ZHANG Ya-feng;DAI Jian-jian(Institute 206,China Aerospace Science and industry Crop,Beijing 100854,China;Mechanical and Electrical Engineering College,Jinhua Polytechnic,Jinhua 321000,China;Department of Chassis Components Technology,China North Vehicle Research Institute,Beijing 100072,China)

机构地区：[1]中国航天科工集团第206研究所,北京100854 [2]金华职业技术学院机电工程学院,金华321000 [3]中国北方车辆研究所底盘部件技术部,北京100072

出　　处：《科学技术与工程》2020年第19期7820-7825,共6页Science Technology and Engineering

基　　金：国家自然科学基金(51875536)。

摘　　要：针对军用车辆悬挂系统所受大负载强冲击的使用工况,提出了液压缓冲器阻尼与冲击特性仿真分析的一种研究方法,给出了缓冲器的结构简图,并根据其结构特点,开展了缓冲熄振性能的计算,推导了球面偏心环形缝隙节流的解析式,并充分考虑了压差随缝隙宽度、油液动力黏度以及缝隙偏心率的变化规律;建立了缓冲器动态冲击数学模型,用于模拟压缩与复原全行程的工作过程,提出运用龙格库塔数值算法对瞬态冲击工况下的缓冲力值进行编程计算,并开展关重影响要素的对比研究,所得结论能够为液压缓冲器的参数化设计提供参考。According to the heavy load and strong impact conditions of the suspension system of military vehicles, a research method of damping and impact characteristics of hydraulic buffer was presented. The structure Fig.of buffer was given, and the simulation analysis of the performance of the buffer quenching and vibration were carried out according to its structural characteristics. The throttle analytic formula of the spherical eccentric annular gap was derived, and the variation rules of the pressure difference with the width of the gap, the hydrodynamic viscosity and the eccentricity of the gap were fully considered. After that, the dynamic shock mathematical model of buffer was established to simulate the whole stroke process of compression and recovery. The Runge-Kutta numerical algorithm wase proposed to calculate the buffer force under transient shock condition, and the conclusion could provide reference for parameterized design of hydraulic buffer.

关 键 词：液压缓冲器 阻尼特性 缝隙节流 冲击振动 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]