至少有60座桥上出现的疲劳裂纹是由于小间隙处的面外变形引起的。
At least 60 bridge sites developed fatigue cracks as a result of out-of-plane distortion in a small gap.
随着接头间隙的增大，裂纹率逐渐减少。
When the gap of butt joint increases, cold crack rate gradually decreases.
若在履带板螺栓松动的情况下继续运转机器，会使螺栓和履带板之间产生间隙，进而导致履带板的裂纹。
If the crawler plate bolts loose to continue operating the machine will track bolts and gaps between panels, which led to track Crack plate.
当间隙增大到一定值，可防止冷裂纹的产生。
It shows that cold cracks can be avoided by using appropriate joint gap.
由冲裁变形过程的分析可知，决定合理间隙值的理论依据是应保证在塑性剪切变形结束后，由凸模和凹模刃口处所产生的上、下剪切裂纹重合。
According to the blanking distortion procedure, the theory that decide the proper gap is to make sure the edge of the male die and female die's gap can be superposition.
由冲裁变形过程的分析可知，决定合理间隙值的理论依据是应保证在塑性剪切变形结束后，由凸模和凹模刃口处所产生的上、下剪切裂纹重合。
According to the blanking distortion procedure, the theory that decide the proper gap is to make sure the edge of the male die and female die's gap can be superposition.
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