The rigidity and strengh of hollow swage is discussed by the varition principle of elasticity. The thickness compute formulas of hollow swage are presented in different boundary conditions.

• 利用弹性力学的变分原理，对圆形孔凹模的刚度和强度计算进行了研究，并导出了在不同边界条件下凹模厚度的计算公式。