通过结构、热电场的全耦合，分析了焊接过程中接触面压力变化规律，单边焊熔核形成过程以及形核特点等。
The change rule of the contact pressure, nucleation process and character were investigated by the coupled thermal-electrical-mechanical analysis.
通过数值模拟发现，电极压力和电极球面半径是影响电极-工件间接触面大小的主要因素；
The electrode-to-workpiece and workpiece-to-workpiece con tact behaviors are analyzed, and reasons for contact pressure distribution are explained.
该模型土层定义为弹性，以面面接触对模拟桩土接触面，温度荷载模拟土层对桩的侧压力。
The face-face contact pair is used to simulate the pile soil contact face, and the temperature load is used to simulate the side pressure of soil layer to the pile.
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