Method for developing hardening parameter independent of stress path for geomaterials

LUO Ting; YAO Yang-ping

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Method for developing hardening parameter independent of stress path for geomaterials

更新时间：2026-06-25

- Method for developing hardening parameter independent of stress path for geomaterials
- Vol. 28, Issue 1, (2007)
- 作者机构：
  
  北京航空航天大学土木工程系,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU43
- Online First：28 August 2013，
  
  Published：2007
- 稿件说明：
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LUO Ting, YAO Yang-ping. Method for developing hardening parameter independent of stress path for geomaterials[J]. 2007, 28(1).
DOI：

LUO Ting, YAO Yang-ping. Method for developing hardening parameter independent of stress path for geomaterials[J]. 2007, 28(1). DOI：

摘要

在分析砂土试验结果的基础上，揭示了基本硬化内参量（塑性体积应变、塑性剪应变）变化的应力路径相关性，提出了应力路径无关硬化参量的一般表达式。并指出了塑性功硬化参量及其提出的黏土和砂土统一硬化参量均是所提一般表达式框架下的特例。还将该统一硬化参量直接和修正剑桥模型结合，并与试验结果对比，表现出描述剪胀特性的简单性和有效性。

Abstract

Based on the test results of sand

mechanics of internal parameters (plastic volumetric strain and plastic deviator strain) depending on stress path is explained. General equation expressing hardening parameter independent of stress path is proposed. The plastic work and the unified hardening parameters for clay and sand proposed by authors are all special examples as general equation. The combination of the unified hardening parameters and Cam-clay model

and the comparison with the test results

show that this parameter can be used to constitutive model simply and effectively.

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