A cusp catastrophe model of key points horizontal displacement and reduction coefficient is built by using the strength reduction finite element method to evaluate the slope stability.
采用有限元强度折减法进行边坡稳定分析，建立边坡内最大水平方向位移与折减系数尖点突变模型，并以此作为边坡是否失稳的判断标准。
So the elastic - plasticity model is more compatible to slope stability analysis by FEM with shear strength reduction.
因此，弹塑性模型更适合于强度折减有限元法分析土坡稳定性。
At present, only the strength parameters are reduced when the strength reduction method is used to analyze the slope stability; moreover, the ideal elastoplastic model is used.
目前用于边坡稳定性分析的数值方法中的强度折减法通常是仅对强度参数进行折减，且采用的是理想弹塑性模型。
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