铁道标准设计Issue(1)：37-41,46,6.DOI:10.13238/j.issn.1004-2954.2015.01.009
钢轨扣件减振橡胶阻尼耗能特性分析
Analysis of Structural Damping Property of Rail Fastening Rubber Absorber
王书卫1
作者信息
- 1. 铁道第三勘察设计院集团有限公司，天津 300251
- 折叠
摘要
Abstract
To understand the rules of damping distribution and changes in amplitude and frequency of rubber absorber of rail fastening, two kinds of rail fastenings with compressed and sheared rubber absorbers respectively are tested. A nonlinear dynamic model of rubber absorber coupled with nonlinear elastic force and mixed damping in rail fastening is established with model parameters identified and results verified. Elastic deformation energy, damping dissipation energy and structural loss factors are calculated based on the proposed model. The results show that calculated damping parameters of the two rubber absorbers follow the similar rules, the elastic deformation energy, damping dissipation energy and structural loss factor increase rapidly with the increasing of amplitude, and are affected less by frequency. Structural loss factor of the compressed rubber absorber is much bigger than that of sheared rubber absorber under the same experimental condition, which indicates that the compressed rubber absorber has a better damping capacity than that of the sheared rubber absorber, but the sheared rubber absorber has a better capacity of vibration isolation. As a result, vibration isolation and energy dissipation can be balanced through combined deformation of compressed and sheared rubber absorbers to design new rail fastenings, and structural loss factor taken as a control index.关键词
钢轨扣件/橡胶/阻尼/结构损耗因子Key words
Rail fastening/Rubber/Damping/Structural loss factor分类
交通工程引用本文复制引用
王书卫..钢轨扣件减振橡胶阻尼耗能特性分析[J].铁道标准设计,2015,(1):37-41,46,6.
