The Numerical Analysis of Energy Density during Inertia Friction Welding Process;

可以用类似的方法定义动量密度，能量密度等等。

Three control modes have been worked out, such as time-control, deformation-control and power-peak control. Each model realizes automatic control in linear friction welding.

采用时间控制、变形量控制和功率峰值控制三种控制方式实现了焊接过程的自动控制。

The inertia friction welding process is a non-linear process because of the interaction between temperature field and material properties as well as friction force and thrust force.

焊接过程中的温度、材料热物性、摩擦力和顶锻压力的相互作用使焊接过程高度非线性。

The mean unit force of friction to a great degree depends on shearing of pressure welding bridges and conquering of ploughing resistance.

平均单位摩擦力基本上取决于切断压力焊接桥和克服耕犁阻力。

With the increase of the translation velocity of the pin, the flow of the material in friction stir welding becomes faster but the equivalent plastic strain decreases.

随着搅拌头平移速度的增加，垂直于焊缝方向上的截面上，等效塑性应变减小，但是材料的流动速度会随之增加。