岩土工程学报2025，Vol.47Issue(12)：2507-2516,10.DOI:10.11779/CJGE20240841
考虑颗粒破碎及与状态相关的双屈服面弹-塑性本构模型
A state-dependent double yield surface elastoplastic constitutive model considering particle breakage
摘要
Abstract
Numerous experimental studies have shown that particle breakage in granular geomaterials under loading alters the grain size distribution(GSD)and consequently affects their mechanical properties.Therefore,establishing a constitutive model that incorporates particle breakage is crucial for accurately predicting the stress-strain behavior of granular materials.First,this study derives a hyperbolic breakage evolution model based on the characteristics and limitations of Hardin's breakage evolution model and extensive test results and modifies the elastic compliance matrix(Ce)to account for particle breakage.Next,a critical state equation that considers particle breakage effects is established,effectively capturing the increasing slope of the critical state line due to particle breakage.This characteristic is incorporated into the state parameters,resulting in a plastic compliance matrix(Cp)that accounts for particle breakage.Finally,by combining the modified elastic and plastic compliance matrices,a state-dependent double yield surface elastoplastic constitutive model that considers particle breakage is developed and validated.关键词
本构关系/颗粒破碎/破碎演化/双屈服面Key words
constitutive relation/particle breakage/breakage evolution/double yield surface分类
建筑与水利引用本文复制引用
陈嘉瑞,汤耀岚,张春顺..考虑颗粒破碎及与状态相关的双屈服面弹-塑性本构模型[J].岩土工程学报,2025,47(12):2507-2516,10.基金项目
国家自然科学基金面上项目(52278367) （52278367）
水灾害防御全国重点实验室"一带一路"水与可持续发展科技基金项目(2024nkms08)This work was Supported by the National Natural Science Foundation of China(Grant No.52278367)and The Belt and Road Special Foundation of the National Key Laboratory of Water Disaster Prevention(Grant No.2024nkms08). （2024nkms08）
