论文部分内容阅读
为研究轨枕空吊对轨枕动态响应的影响,建立了车辆-轨道垂向耦合动力学模型.假设车辆模型为多刚体系统,用Euler梁模拟离散支撑的钢轨,轨枕视为弹性地基上的Euler梁,利用显式积分法求解车辆-轨道非线性动力学方程.结果表明:当轨枕部分悬空或完全悬空时,影响轨枕最大弯矩的位置;轨枕空吊数目越多,轨枕的弯矩越大;轨枕底座的完全悬空对邻近空吊区的轨枕动态行为影响较大.
In order to study the effect of empty sleepers on the dynamic response of sleepers, a vehicle-rail vertical coupling dynamic model is established. Assuming the vehicle model is a multi-rigid body system, Euler beams are used to simulate discretely supported rails and sleepers are regarded as Euler beams on elastic foundations , The explicit integral method is used to solve the nonlinear dynamic equation of the vehicle-track. The results show that when the sleeper part is dangling or completely dangling, the position of the maximum bending moment of sleeper is affected; the more the number of empty sleepers is, The complete suspension of the sleeper base has a great influence on the dynamic behavior of the sleeper adjacent to the empty hanging area.