东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (4): 551-554.DOI: 10.12068/j.issn.1005-3026.2014.04.022

• 机械工程 • 上一篇    下一篇

基于修正模态应变能法的硬涂层薄板阻尼性能预估

孙伟,郝春磊,张洪浩,潘德君   

  1. (东北大学 机械工程与自动化学院, 辽宁 沈阳110819)
  • 收稿日期:2013-04-14 修回日期:2013-04-14 出版日期:2014-04-15 发布日期:2013-11-22
  • 通讯作者: 孙伟
  • 作者简介:孙伟(1975-),男,辽宁营口人,东北大学副教授.
  • 基金资助:
    国家自然科学基金资助项目(51375079);中央高校基本科研业务费专项资金资助项目(N110403010).

Modified Modal Strain Energy Method Used for Predicting Damping Characteristics of HardCoating Thin Plate

SUN Wei, HAO Chunlei, ZHANG Honghao, PAN Dejun   

  1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China.
  • Received:2013-04-14 Revised:2013-04-14 Online:2014-04-15 Published:2013-11-22
  • Contact: SUN Wei
  • About author:-
  • Supported by:
    -

摘要: 在考虑硬涂层材料的小阻尼特点以及经典模态应变能法计算误差的前提下,提出了一种适用于硬涂层复合结构阻尼性能预估的新方法.推导了修正模态应变能法的原理性公式.以一个涂敷Mg-Al硬涂层的悬臂薄板为例进行了实例研究,并讨论了硬涂层材料参数、涂层厚度对结构系统阻尼性能的影响.结果发现增大硬涂层的杨氏模量、损耗因子及厚度均可提高复合结构的阻尼性能.相关研究成果可为硬涂层材料制备及阻尼减振设计提供参考.

关键词: 修正模态应变能法, 硬涂层, 薄板结构, 阻尼性能, 预估

Abstract: Considering the small damping characteristics of hardcoating materials and the calculation error caused by classic modal strain energy method, a new method was proposed to predict damping characteristics of hardcoating composite structure. The principle formulas of modified modal strain energy method were deduced. A case of cantilever plate covered with MgAl hard coating was carried out, and the effects of the hard coating materials parameters and coating thickness on the damping characteristics of composite structure were discussed. The analysis results showed that the increase of Young’s modulus, loss factor or thickness of coating can improve the damping properties of the composite structure. The relevant research results provide a reference for the preparation of hard coating materials and design of damping vibration reduction.

Key words: modified modal strain energy method, hard coating, thin plate structure, damping characteristics, prediction

中图分类号: