噪声与振动控制

›› 2010, Vol. 30 ›› Issue (4): 36-39.DOI: 10.3969/j.issn.1006-1355.2010.04.010

• 运载工具振动与噪声 • 上一篇    下一篇

《基于动刚度实验的发动机悬置系统计算模型及模态验证》

宋向荣1，靳永军2，李建康3，郑立辉3   

  1. （1.江苏科技大学船海学院，工程力学系，江苏镇江212003;2.上海交通大学机械与动力工程学院，上海200240;3.江苏大学理学院工程力学系，江苏镇江212013）
  • 收稿日期:2009-06-26 修回日期:1900-01-01 出版日期:2010-08-18 发布日期:2010-08-18
  • 通讯作者: 宋向荣

《Computation Model and Modal Verification for an Engine Mount System Based on Dynamic Stiffness Test》

SONG Xiang-rong1,JIN Yong-jun2,LI Jian-kang3,ZHENG Li-hui3   

  1. (1. School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang Jiangsu 212003, China;2 School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;3 Department of Engineering Mechanics, College of Science, Jiangsu University, Zhenjiang Jiangsu 212013, China)
  • Received:2009-06-26 Revised:1900-01-01 Online:2010-08-18 Published:2010-08-18
  • Contact: SONG Xiang-rong

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摘要： 计算模型的真实性、可靠性是模型建立的关键问题，线性系统动力学模型不能适应参数呈非线性系统的建模。以发动机悬置系统为例，通过实验获得刚度和阻尼参数，用实验的质量矩阵、刚度矩阵建立系统动力学计算模型，通过实验运行模态与计算模态相关分析得到验证模型。结果表明考虑动刚度参数的计算模型比传统静刚度模型更接近真实情形。

关键词: 振动与波, 动刚度实验, 发动机悬置系统, 模态验证, 动力学计算模型, 工作模态分析

Abstract: The practicality and reliability of computation model are the key problems in model building. The dynamic model of the linear system does not adapt to the nonlinearparameter system. In this paper, the stiffness and damping parameters of an engine mount system are obtained in experiments. The corresponding mass matrix and stiffness matrix are used for establishing the dynamic computation model of the engine mount system. The model is validated by relative analysis of operational modal and calculated modal. Results indicate that the computation model including dynamic stiffness parameters is more practical than the traditional model of static stiffness.

Key words: vibration and wave, dynamic stiffness test, engine mount system, modal validation, dynamic computation model, operational modal analysis

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