Second-order cumulative waves have been fully determined by applying the boundary condition of second-order stress.
根据二阶应力边界条件，确定出了固体板内的二阶积累波。
The second kind of these techniques is the ultrasonic impact technique which was used in the welding process in order to reduce the residual tension stress in the welding area of the ship structure.
第二种是超声波冲击技术，用以减少船舶结构中的焊接区域出现的残余应力。
The second order effects of the whole structure and its members, geometric imperfections and residual stress as well as the feature of semi-rigid connections can be taken into account in this method.
该方法能够考虑结构及构件的二阶效应、几何缺陷和残余应力等多种非线性因素的影响，还可以考虑连接的半刚性性能。
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