| 不平整路面履带车辆动力传动系统扭转随机激励研究 |
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| 引用本文： | 刘辉,符升平,项昌乐.不平整路面履带车辆动力传动系统扭转随机激励研究[J].农业机械学报,2010,41(12):1-6. |
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| 作者姓名： | 刘辉 符升平 项昌乐 |
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| 作者单位： | 北京理工大学机械与车辆学院,北京,100081 |
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| 摘 要： | 为计算分析履带车辆传动系统扭转随机激励，以标准路面不平度统计特征为基础，实现路面激励时频转换。同时分析扭转随机激励产生机理，提出其理论计算公式，并且通过对相关部件模型的数学抽象，建立不同路面下履带整车动力学模型。通过实例仿真得到某履带车辆扭转随机激励谱，探讨了路面不平度、车速和预张紧力对其产生的影响。研究结果表明，路面不平度和车速是影响扭转随机激励的主要因素。
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| 关 键 词： | 路面不平度 履带车辆 传动系统 扭转随机激励 |
| 收稿时间： | 2009/12/7 0:00:00 |
| 修稿时间： | 2/5/2010 12:00:00 AM |
Torsional Random Excitation of Tracked Vehicle Powertrain System Caused by Road Roughness |
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| Liu Hui,Fu Shengping and Xiang Changle.Torsional Random Excitation of Tracked Vehicle Powertrain System Caused by Road Roughness[J].Transactions of the Chinese Society of Agricultural Machinery,2010,41(12):1-6. |
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| Authors: | Liu Hui Fu Shengping and Xiang Changle |
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| Institution: | Beijing Institute of Technology;Beijing Institute of Technology;Beijing Institute of Technology |
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| Abstract: | To analyze the torsional random excitation of tracked vehicle powertrain system, the road surface excitation was transferred from frequency region to time region based on given the statistical characteristics of road roughness. The root of torsional random excitation was investigated and theoretic calculating formula was proposed. Then the dynamics model of tracked vehicle was constructed under different road surface by abstracting each element of the vehicle mathematically. The torsional random excitation spectrum was numerically calculated. The effects of road roughness, vehicle velocity and pre tension having on torsional random excitation were deeply studied. The investigated results indicated that the road roughness and tracked vehicle speed were the main factors to determine the value of torsional random excitation. |
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| Keywords: | Road roughness Tracked vehicle Powertrain system Torsional random excitation |
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