发生内皱临界应力的能量法求解

Calculation of critical stress of inner wrinkle by energy method

以锥形件拉深为例 ,运用能量法分析具有悬空区的轴对称零件发生内皱的临界条件 。

By use of the energy method, the critical condition is analyzed under which the inner wrinkle on axis-symmetrical parts with no-support regions .A calculation formula for the critical compressive stress is proposed.