以下为句子列表：
英文: Die throat radial stress was analyzed during every phase of drawing when the round draw bead be used, the formula of even stress intension in every region are deduced, This work establish the theory base of software programming about drawing the curved su
中文: 摘要以半圆筋爲例，分析得到了使用拉深筋拉深曲面零件时，拉深各阶段凹模入口的径向应力公式，并且对拉深各位置段的平均应力强度进行了求解，爲开发曲面零件拉深应用软件奠定了理论基础。
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