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轻轨PC梁铸钢支座有限元分析及实验
引用本文:韩西,钟厉,等.轻轨PC梁铸钢支座有限元分析及实验[J].重庆大学学报(自然科学版),2002,25(5):112-115.
作者姓名:韩西  钟厉
作者单位:[1]重庆大学光电工程学院,重庆400044 [2]重庆交通学院,重庆400074
摘    要:跨座式轻轨轨道采用简支梁结构,铸钢支座需承受所有荷载,其强度将对轻轨交通产生决定性的影响。由于铸钢支座结构的特殊性和受载的复杂性,对其进行应力分析,确保轻轨安全,有极其重要的意义,通过对铸钢支座的有限元分析,建立了支座的三维有限元模型,分析支座承受的荷载及受力边界条件,得到接触应力和综合应力计算结果。为验证理论分析结果,对支座进行了疲劳试验,试验研究表明,有限元分析结果和试验结果吻合良好,保证了分析结果的可靠性。

关 键 词:支座  有限元分析  接触应力
文章编号:1000-582X(2002)05-0112-04
修稿时间:2002年1月15日

Finite Element Analysis and Experimental Research on Pedestal of PC Beam for Light Railcar
HAN Xi,ZHONG Li,SHAO Yi ming,CHAI Ying qing,FU Hong zhang.Finite Element Analysis and Experimental Research on Pedestal of PC Beam for Light Railcar[J].Journal of Chongqing University(Natural Science Edition),2002,25(5):112-115.
Authors:HAN Xi  ZHONG Li  SHAO Yi ming  CHAI Ying qing  FU Hong zhang
Institution:HAN Xi 1,ZHONG Li 1,SHAO Yi ming 2,CHAI Ying qing 3,FU Hong zhang 3
Abstract:In design of light railcar used freely supported beam, the cast steel pedestals will bear complex loads, which include weight, acceleration and wind, etc. Because of pedestals' peculiarity and complexity, the strength of the pedestals play an important role in safety of light railcar. So it's necessary to analyze their stress and deformation in order to insure safety of light railcar. Up to now, finite element analysis is still the most effective means. By studying cast steel pedestal with finite element method, 3-D finite element models of fixed and kinetic pedestals were built, and the loads and boundary condition of pedestals were analyzed. By means of finite element analysis software, the contact and von mises stresses were obtained and deformation were resolved. As a result of analysis, the tow of pedestal can fulfill requirement of use in light railcar, the contact stress and von mises stress are not exceeded limit stress strength of materials. There is enough static strength for the structures of pedestals. For verifying theoretical analysis result, the fatigue test was carried out, with examining the testing points locating on the pedestals, the stress and deformation data were measured. By comparing between theoretical analysis and test data, the experimental results show calculated and testing results can meet the case well which assure the reliability of finite element analysis. But in the result, there are differences in deformations of them. The reason may be that boundary conditions and loads are not same between analysis and experiment.
Keywords:pedestal  finite element analysis  contact stress
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