基于虚拟激励法的军用汽车随机振动分析  

Random Vibration Analysis of Military Vehicle Based on Pseudo-excitation Method

作　　者：李杰[1] 王文竹[1] 赵旗[1] 张初旭[2] 

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室,长春130025 [2]沈阳工学院机械与运载学院,抚顺113122

出　　处：《汽车工程》2016年第3期368-372,共5页Automotive Engineering

基　　金：国家863计划项目(2006AA110104)资助

摘　　要：为进行军用汽车随机振动分析,建立了1/2汽车5自由度军用汽车振动分析模型,基于虚拟激励法推导了汽车随机振动分析的公式,给出了吸收功率的国际单位制表示,确定了军用汽车随机振动分析的主指标和辅助指标,应用MATLAB开发了军用汽车随机振动分析软件,研究了某军用汽车的随机振动。结果表明,基于虚拟激励法的军用汽车随机振动分析,结果与传统方法基本一致,但方法更简便与通用。To conduct random vibration analysis of military vehicle,a 1 /2 vehicle model with 5 DOFs for military vehicle is established for vibration analysis. Based on the pseudo excitation method,the formulas for random vibration analysis of military vehicle are derived,in which the formula for absorbed power is given with the international system of units,and the principal and auxiliary indicators for random vibration analysis of military vehicle are determined. A random vibration analysis software for military vehicle is developed by using MATLAB,and the random vibration of a military vehicle is studied. The results show that the results of random vibration analysis of military vehicle based on pseudo excitation method is basically consistent with that of conventional method,but the new method is simpler and universal.

关 键 词：军用汽车 随机振动 虚拟激励法 建模与仿真 吸收功率 

分 类 号：TJ810[兵器科学与技术—武器系统与运用工程]