摘要
在对堆石料主要应力应变特性进行分析的基础上,对堆石料的2大类本构模型——非线性弹性模型和弹塑性模型的特点进行举例评析,从理论上指出了这2类本构模型的不足之处,并引入了一类具有独特建模思想的连续介质本构理论——亚塑性理论,对堆石料进行了亚塑性建模及初步应用研究.理论分析和算例表明,所建堆石料亚塑性模型能够合理反映堆石料的主要力学特性,且具有本构参数适用范围广的特点.
Based on the analysis of main stress-strain behaviors of rockfill, the characteristics of two types of constitutive models mainly used at present, i.e. the nonlinear elastic model and elastoplastic model, were discussed and analyzed, and the deficiencies of the constitutive models in theory were pointed out. Then, the hypoplastic constitutive theory, a continuous medium constitutive theory with distinctive idea of modeling, was introduced, and the hypoplastic modeling of rockfill and the application of the model were preliminarily studied, Theoretical analysis and case study show that the established hypoplastic model is rational for reflection of the main mechanical characteristics of rockfill, and its constitutive parameters are of a wide scope of application.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第1期102-105,共4页
Journal of Hohai University(Natural Sciences)
基金
中国博士后科学基金(20070411015)
河海大学自然科学基金(2007417111)
关键词
堆石料
应力应变特性
本构建模
非线性弹性模型
弹塑性模型
亚塑性模型
rockfill
stress-strain property
constitutive modeling
nonlinear elastic model
elastoplastic model
hypoplastic model
