广义塑性力学多重屈服面模型隐式积分算法及其ABAQUS二次开发

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摘要进行采用非关联流动法则的多重屈服面本构模型隐式积分算法的实现。基于广义塑性力学建模理论，模型采用由试验拟合确定的屈服面，通过大型有限元软件ABAQUS提供的用户子材料接口，采用FORTRAN语言，实现广义塑性力学的双屈服面模型的完全隐式应力积分算法。利用所开发的UMAT程序，进行黏土常规三轴数值模拟计算，通过数值模拟结果与试验结果的比较，验证模型和程序的有效性和准确性。

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关键词 ：土力学, 广义塑性力学, 多重屈服面模型, 非关联流动法则, 隐式应力积分算法

Abstract：An implicit integration algorithm of constitutive equations for multi-yield-surface model with non- associative flow rule is presented firstly. The yield criterions of multi-yield-surface model are gotten by fitting the experimental data through conventional triaxial tests and true triaxial tests based on generalized plasticity. The UMAT subroutine of this model is developed in ABAQUS with the FORTRAN language through the implicit algorithm. It is easy to verify the feasibility and accuracy of the model and the program by comparing the results of numerical simulation with that given by triaxial tests.

Key words： soil mechanics generalized plasticity multi-yield-surface model non-associative flow rule implicit stress integration algorithm

收稿日期: 2011-05-18

引用本文:

冯嵩1，2，郑颖人2，孔亮3，冯夏庭1. 广义塑性力学多重屈服面模型隐式积分算法及其ABAQUS二次开发[J]. 岩石力学与工程学报, 2011, 30(10): 2019-2025.
FENG Song1，2，ZHENG Yingren2，KONG Liang3，FENG Xiating1. IMPLICIT ALGORITHM OF MULTI-YIELD-SURFACE MODEL BASED ON GENERALIZED PLASTICITY AND ITS REDEVELOPMENT IN ABAQUS. , 2011, 30(10): 2019-2025.

链接本文:

http://www.rockmech.org/CN/Y2011/V30/I10/2019

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