Welding is a complicated process in which arc physics, heat transfer, metallurgy and mechanics are involved.

焊接是一个涉及电弧物理、传热、冶金和力学的复杂过程。

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On the basis of model selection from the pieces tested and according to elastic mechanics, the relation between minute displacement and welding residual stress is deduced.

对所测试件选取适当的模型，应用弹性力学理论，推导出微小位移与焊接残余应力的关系式。

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Based on Linear interfacial Fracture Mechanics, a new welding joint model-multi layered interfacial model is proposed in this paper.

基于线性界面断裂力学，提出了焊接接头的新模型—多层模型。

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If thinkers like Vedder and Murray had more sway, some of the kids struggling with algebra in high school would be studying welding or car mechanics instead, and many of the ones whiling away four years on liberal arts courses would be studying nursing or software instead.

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