确定亚塑性模型参数n、h_s的一种改进方法

Improved method to determine parameters n and hs of a hypoplastic constitutive model

研究了亚塑性本构模型中颗粒硬度hs和指数n的实验确定方法,并且指明其不足之处。根据亚塑性理论和优化方法,提出了用局部搜索最优解来确定hs和n的方法,并通过试验对改进方法进行了验证。结果表明,该方法可有效确定这两个参数。

A hypoplastic constrtutive model was presented and the determination of its parameters hs and n was investigated. According to the hypoplasticity and optimization, an improved method to determine the parameters of n and hs using iterative operation was put forward. It was shown that the present method could be used to determine the parameters of hypoplashc constitutive model.