摘要
应用系统矩阵法,推导了扭转振动固有特性的灵敏度公式;应用转换矩阵,针对实际传动系统,分析了固有频率和振型对轴系刚度、惯量、传动比等实际系统模型参数的灵敏度;基于灵敏度分析,采用多步灵敏度计算方法进行动力学修改;以某车辆动力传动系统为实例,验证了该方法在设计中的实用性。
By using the direct derivation method, the natural characteristics' sensitivities with respect to the undamped equivalent model parameters were derived. Then, by using the transfer matrix, the sensitivities turned to face the physical model, which was more practical to tell ones in the physical model where was the most sensitive position and what was the most parameter. The parameters included stiffness, inertia and especially ratio of the vehicle powertrain. Based on the sensitivity analysis, a multi--step method for dynamic modification was presented here. It is instanced to he effective by a certain powertrain.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2006年第3期325-328,共4页
China Mechanical Engineering
基金
车辆传动国家重点实验室开放基金资助项目(51457130104BQ0107)
关键词
传动系统
固有特性
灵敏度
动力学修改
扭振
powertrain
natural characteristics
sensitivity
dynamic modification
torsional vibration
作者简介
项昌乐,男,1963年生。北京理工大学车辆传动国家重点实验室教授、博士研究生导师。研究方向为车辆动力学和疲劳设计。发表论文30余篇。
廉晓辉,女,1976年生。北京理工大学车辆传动国家重点实验室硕士研究生。中国兵器工业系统总体部助理工程师。
周连景,男,1975年生。北京理工大学校长办公室助理研究员。