| 柴油机曲轴轴系非线性振动特性的数值研究 |
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| 引用本文： | 朱向哲,袁惠群.柴油机曲轴轴系非线性振动特性的数值研究[J].内燃机工程,2009,30(3). |
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| 作者姓名： | 朱向哲 袁惠群 |
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| 作者单位： | 1. 辽宁石油化工大学,机械工程学院,抚顺,113001;东北大学,机械工程与自动化学院,沈阳,110004
2. 东北大学,机械工程与自动化学院,沈阳,110004 |
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| 摘 要： | 考虑了轴系的变转动惯量、活塞与气缸间的非线性干摩擦和非线性弹性恢复力等因素,建立了柴油机轴系非线性动力学模型.利用数值积分法研究了非线性阻尼和转速等参数对柴油机轴系系统响应的影响.通过系统响应的时域波形图、幅值谱图、相轨迹图,分析了曲轴轴系的周期、拟周期、混沌等复杂的非线性动力学现象.结果表明:变转动惯量和活塞与气缸间的非线性干摩擦对发动机曲轴系统的非线性振动行为具有较大的影响.
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| 关 键 词： | 内燃机 曲轴轴系 干摩擦 变转动惯量 非线性振动 |
Numerical Study on Nonlinear Dynamic Characteristic of Crankshaft System of Diesel Engine |
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| ZHU Xiang-zhe,YUAN Hui-qun.Numerical Study on Nonlinear Dynamic Characteristic of Crankshaft System of Diesel Engine[J].Chinese Internal Combustion Engine Engineering,2009,30(3). |
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| Authors: | ZHU Xiang-zhe YUAN Hui-qun |
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| Affiliation: | 1.School of Mechanical Engineering;Liaoning Shihua University;Fushun 113001;China;2.School of Mechanical Engineering and Automation;Northeastern University;Shenyang 110004;China |
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| Abstract: | A nonlinear dynamic model for crankshaft system of diesel engine was established by considering varied inertia and nonlinear dry friction as well as nonlinear elasticity between piston and cylinder.The effects of nonlinear damp and rotational speeds on response characteristics of crankshaft system of diesel engine were studied by using numerical integral method.Through the calculated time-response diagram,frequency-response diagram and phase trace diagram,the nonlinear dynamics motions,such as period,quasi-... |
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| Keywords: | IC engine crankshaft system dry friction varied inertia nonlinear vibration |
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