Considering the tangential force applied on a contact spot, the critical area demarcating the elastic and plastic regimes is obtained by comparing the normal elastic load with the normal plastic load.
计及作用于接触斑点上的切向力，通过比较作用于接触斑点上的法向弹性载荷与法向塑性载荷，确定了区分弹性接触与塑性接触区域的临界接触斑点面积。
In the mean time, the vertical and roll motions of the pantograph fame should be as small as possible, so that to make the contact force as normal as the conventional train.
并且使受电弓框架垂向位移和侧滚角度足够小，弓网接触压力达到车辆正常曲线通过时的水平。
Results (1)The traumatic contact area was larger and contact force was greater than that of the normal occlusal contact.
结论创伤有以下特点。 ①与正常比较，创伤有明显的异常接触区，该区的接触面积或接触力明显增大。
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