| 摘要:采用AVL/EXCITE-PU与ABAQUS软件,基于曲轴系多体动力学,对WP7柴油机进行模拟仿真,计算主轴承座轴瓦的反力；同时根据扭转振动的计算结果与测试数据的比较,进行有限元模型的验证与标定,从而获得机体结构噪声的主要激励源数据；通过动力学仿真,得出选用合适、有效的减振器可以降低轴系的最大应力,从而提高疲劳安全系数的结论。 |
| 关键词: 多体动力学 曲轴系 扭转振动 减振器 |
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| Analysis on Multi-body Dynamics of WP7 Diesel Engine Crankshaft |
| Duan Xiaoxia,Su Tiexiong |
| Mechanical and Electronic Engineering Institute, North University of China, ShanxiTaiyuan030051 |
| Abstract:By using AVL/ EXCITE-PU and ABAQUS software, and based on multi-body dynamics of the crankshaft, the WP7 diesel engine was simulated and counter-force of the bearing shell in the main bearing seat was calculated. At the same time, according to the comparison of calculation results and torsional vibration test data,the finite element model's validation and calibration were accomplished, and thus got the main excitation data of body structure noise. Furthermore, through dynamics simulation, it was concluded that the appropriate and effective vibration damper could reduce the maximum stress of the crankshaft system, so as to improve the fatigue safety coefficients. |
| Key words: multi-body dynamics crankshaft system torsional vibration vibration damper |
