基于加速度响应优化大吨位冲击载荷的方法研究

The method research to reverse the big tonnage impact load based on acceleration response

利用面板的加速度响应反求出面板所受的载荷力时间历程,首先,开展测力墙面板在台车冲击载荷下的试验,建立有限元仿真模型得获得一条初始的载荷力时间曲线,然后在满足仿真与实验的测力面板加速度响应差异最小的目标下,采用遗传迭代算法优化反求出作用在测力面板的一条最优的力时间曲线。最后通过试验验证,说明采用反求方法获得的测力板所受的载荷具有较好的适用性,该方法可以推广到测量铁路车辆的用组合式测力墙测量大吨位碰撞力。

In this paper,the acceleration response of the panel is used to calculate the time history of the load on the panels.Firstly,a test on the load wall panels is carried out under car’s impact load,and gain an initial load time curve by means of finite element simulation.And then under the condition that the acceleration response of the force panel is the least difference between simulation and experiment,an optimal force time curve is obtained by using the genetic iterative algorithm.Finally the validation of test illustrates that the reverse method to measure the load on board has good applicability,this method can be applied to measure collision force of large tonnage of railway vehicle by the combined load wall.