CAJ | 학술논문

选用福斯罗扣件弹条为研究对象，基于非线性接触理论，建立扣件系统有限元模型，确定弹条在安装状态下的危险区域，研究钢轨横移和轨下胶垫刚度对弹条危险区域的影响，并与现场弹条破坏位置对比。结果表明：弹条在安装完成后，弹条危险区域出现在弹条后端圆弧内侧的表层，弯曲和扭转起主要作用；随着钢轨横向位移和轨下胶垫刚度的变化，两侧扣件弹条最大等效应力和扣压力均发生明显变化。
선용복사라구건탄조위연구대상，기우비선성접촉이론，건립구건계통유한원모형，학정탄조재안장상태하적위험구역，연구강궤횡이화궤하효점강도대탄조위험구역적영향，병여현장탄조파배위치대비。결과표명：탄조재안장완성후，탄조위험구역출현재탄조후단원호내측적표층，만곡화뉴전기주요작용；수착강궤횡향위이화궤하효점강도적변화，량측구건탄조최대등효응력화구압력균발생명현변화。
Based on nonlinear contact theory,a finite element model for Vossloh rail fastening system was established. The dangerous zone of the clip was found,and the influences of rail lateral displacement and rail pad stiffness on the dan-gerous zone was investigated.The numerical result was compared with the fracture location of the clip in the field.Results show that a local stress concentration in the clip is occurred at backend arc surface of the clip after the rail fastening clip is installed,and both bending and torsion play a major role.The rail lateral displacement and rail pad stiffness greatly affect the maximum equivalent stress and the clamping force of rail fastening clip.