结果表明：剪切时施加振动，会显著减小剪切力和剪切功。
It is concluded that exerting the vibration when shearing, the shearing force and work will be obviously decreased.
液化面作为累积剪切功的函数，从初始应力点的包络线开始，随着循环活动性的进行，逐渐接近破坏线。
The liquefaction front, originating from the envelope of initial effective stress points, gradually approaches the failure line as the cyclic mobility proceeds as a function of plastic shear work.
结果表明：X70管线钢焊接接头热影响区冲击试样的冲击功与断口剪切面积基本成线性比例关系，冲击功越高，剪切面积越大。
The results indicated that impact absorbed energy of heat-affected zone in welded joint of X70 pipeline steel were proportional with shearing area on the whole.
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