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| 计入曲轴倾斜时曲轴-轴承系统动力学摩擦学和弹性力学耦合分析 | |
| 引用本文： | 何芝仙,桂长林,李震,孙军.计入曲轴倾斜时曲轴-轴承系统动力学摩擦学和弹性力学耦合分析[J].内燃机工程,2009,30(3). |
| 作者姓名： | 何芝仙 桂长林 李震 孙军 |
| 作者单位： | 1. 安徽工程科技学院,机械系,芜湖,241000;合肥工业大学,机械与汽车学院,合肥,230009 2. 合肥工业大学,机械与汽车学院,合肥,230009 3. 安徽工程科技学院,机械系,芜湖,241000 |
| 基金项目： | 国家自然科学基金研究项目 |
| 摘 要： | 采用动力学仿真软件ADAMS和有限元分析软件ANSYS,辅以手工编程相结合的方法,研究了计入曲轴倾斜时某4缸柴油机曲轴-轴承系统动力学、摩擦学和弹性力学(曲轴的刚度和强度)耦合分析问题.根据耦合特点,先解决曲轴-轴承系统动力学、摩擦学和刚度耦合析问题,再解决曲轴动应力计算问题的解耦方法.研究结果表明:计入曲轴颈倾斜,主轴承最小油膜厚度大幅度下降,最大油膜压力大幅度上升,曲轴动力学响应也发生变化,曲轴疲劳寿命下降23.24 %. |
| 关 键 词： | 内燃机 曲轴-轴承系统 动态油膜压力 轴倾斜 耦合分析 损伤积累理论 |
Coupling Analysis of Dynamics Tribology and Elastic Mechanics for a Crankshaft Bearing System |
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| HE Zhi-xian,GUI Chang-lin,LI Zhen,SUN Jun.Coupling Analysis of Dynamics Tribology and Elastic Mechanics for a Crankshaft Bearing System[J].Chinese Internal Combustion Engine Engineering,2009,30(3). | |
| Authors: | HE Zhi-xian GUI Chang-lin LI Zhen SUN Jun |
| Affiliation: | 1.Department of Mechanical Engineering;Anhui University of Technology and Science;Wuhu 241000;China;2.School of Mechanical and Automobile Engineering;Hefei University of Technology;Hefei 230009;China |
| Abstract: | Multidisciplinary coupling among dynamics,tribology and elastic mechanics(strength and stiffness of crankshaft) of the crankshaft-bearing system of a four cylinder diesel engine was studied by considering the misalignment caused by the elastic deflection of the crankshaft,ADAMS and ANSYS special software were used to solve the coupling problem.A decoupling idea was presented.The coupling between dynamics and tribology was first solved for the elastic crankshaft bearing system and dynamic stress of crankshaf... |
| Keywords: | IC engine crankshaft-bearing system dynamic pressure of oil film misalignment coupling analysis theory of accumulative damage |
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