| 柴油机曲轴动态疲劳强度分析 |
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| 引用本文： | 张俊红,程晓鸣,郑勇.柴油机曲轴动态疲劳强度分析[J].拖拉机与农用运输车,2005(6):66-68. |
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| 作者姓名： | 张俊红 程晓鸣 郑勇 |
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| 作者单位： | 天津大学机械学院,天津,300072 |
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| 摘 要： | 以某直列6缸柴油机曲轴为研究对象,通过动力学非线性分析的方法对该轴进行了耐久性的研究。首先建立了曲轴等部件的三维有限元模型,采用子结构技术,对有限元模型进行模态压缩,然后运用AVL的动力分析模块EXCITE进行动力学非线性仿真,得到一个工作循环曲轴的瞬态应力分布状况,并进行疲劳强度安全系数计算。
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| 关 键 词： | 曲轴 瞬态应力 多体动力学 非线性 子结构方法 疲劳强度 |
| 收稿时间： | 2004-12-13 |
| 修稿时间： | 2004年12月13 |
Analysis on the Dynamic Fatigue Strength of Diesel Engine Crankshaft |
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| Zhang Junhong,Cheng Xiaoming,Zheng Yong.Analysis on the Dynamic Fatigue Strength of Diesel Engine Crankshaft[J].Tractor & Farm Transporter,2005(6):66-68. |
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| Authors: | Zhang Junhong Cheng Xiaoming Zheng Yong |
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| Institution: | Machinery College of TianJin University,TianJin 300072, China |
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| Abstract: | This paper describes the technique used for simulating dynamically the crankshaft of an in-line 8 cylinder engine as to predicting its durability. To perform the nonlinear dynamics analysis, a FEM model of crank train was created firstly, wihich is very large and necessary to create a master-degree-of-freedom set by FE software. Then the program was carried out by using the EXCITE from AVL and the transient stresses of the crankshaft was given. A further study on the safety factors calculation of fatigue strength was described also. |
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| Keywords: | Crankshaft Transient stress Multl-body dynamics Nonlinear Substructure method Fatigue strength |
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