Analysis of vibration reduction effect of steel spring floating slab track with finite elements
Analysis of vibration reduction effect of steel spring floating slab track with finite elements
复制标题
钢弹簧浮置板轨道减振效果有限元分析
DOI：
10.1177/1077546314539372
复制
发表时间：
2016-04-01
影响因子：
2.8
通讯作者：
Jiang, Chongda
中科院分区：
文献类型：
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作者：
Lei, Xiaoyan;Jiang, Chongda
建立了钢弹簧浮置板轨道的有限元动力分析模型。在此基础上，针对浮置板的密度、厚度、长度以及隔振器刚度的不同进行了模态分析。为全面了解钢弹簧浮置板轨道的减振效果，对钢弹簧浮置板轨道进行了谐响应分析，研究了参数变化对减振率的影响。结果表明，隔振器的刚度和阻尼是控制因素，而钢轨垫的刚度和阻尼一般不重要。钢弹簧浮置板轨道的合理取值应满足轨垫刚度和阻尼分别为50-120 MN/m和≥30 kN·s/m，隔振器刚度和阻尼分别为5-10 MN/m和50-100 kN·s/m，隔振器间距为1.25 m，才能达到满意的减振效果。
A model for dynamic analyses of a steel spring floating slab track is developed with finite elements. Based on the model, modal analyses are performed with respect to the different kinds of the density, the thickness and the length of the floating slab as well as the isolator stiffness. To comprehensively understand the vibration reduction effects of the steel spring floating slab track, the harmonic response analyses are carried out, and the influence of varying parameters upon the vibration reduction rate is investigated. The results show that the stiffness and the damping of the isolator are the governing factors, whereas the stiffness and the damping of the rail pad are generally not important. The reasonable values for the steel spring floating slab track should meet the requirements of 50–120 MN/m and ≥30 kN·s/m for rail pad stiffness and damping, 5–10 MN/m and 50–100 kN·s/m for isolator stiffness and isolator damping, and 1.25 m for isolator spacing, in order to achieve the satisfactory effect of vibration reduction.