确定亚塑性模型参数n、hs的一种改进方法
Improved method to determine parameters n and hs of a hypoplastic constitutive model
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摘要: 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。Abstract: 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.
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