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将脆塑性模型作为考虑材料应变软化特性的弹塑性本构关系的一种简化形式，给出 了脆塑性结构稳定问题的一种新的提法——损伤面扰动提法，并由这种提法得出两个计 算脆塑性结构稳定条件的方案。与 Ｋ． Ｄｅｍｓ和 Ｚ．Ｍｒｏｚ给出的能量率提法及相应的求 解途径比较，具有计算简明的优点。作为应用，计算了脆塑性梁的弯曲问题的稳定条件。 所得结果与能量率算法作了比较．
The brittle-plastic model is taken as a simplified form of elasto-plastic constitutive relation considering the strain-softening characteristics of materials, and a new formulation of the problem of brittle-plastic structural stability is proposed—the damage surface disturbance method is proposed. The method of obtaining two stable conditions for the calculation of brittle-plastic structures was obtained. With K. Dems and Z. Mroz’s energy rate formulation and the corresponding solution path comparisons have the advantages of simple calculation. As an application, the stability conditions of the bending problem of a brittle plastic beam are calculated. The results obtained are compared with the energy rate algorithm.