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本文对围绕中心刚性轴的圆形法兰的摆动辗压进行了理论分析。假定材料沿径向流动,确定了速度场以及法兰的应变率和应变分布。本文所用的本构关系在温成形的温度范围内是正确的。这些本构方程考虑了应变硬化和由于材料的恢复和再结晶所引起的应变软化。这些关系式使得法兰上任意点上的屈服应力能作为时间和温度函数从数值上加以确定。本文还分析了增量变形和温材料与模具表面之间断续地接触对热传导和温度分布的影响。
In this paper, a theoretical analysis is made on the swinging rolling of the circular flange around the center rigid shaft. Assuming the material flows radially, the velocity field and the strain rate and strain distribution of the flange are determined. The constitutive relationship used herein is correct over the temperature range of warm forming. These constitutive equations account for strain hardening and strain softening due to material recovery and recrystallization. These relations allow the yield stress at any point on the flange to be numerically determined as a function of time and temperature. The paper also analyzes the effects of incremental deformation and intermittent contact between warm material and mold surface on heat transfer and temperature distribution.