郑州大学学报（工学版）2018，Vol.39Issue(1)：47-52,6.DOI:10.13705/j.issn.1671-6833.2018.01.026
考虑塑性体积应变的扰动状态本构模型改进
Improving the Disturbance State Constitutive Model by Considering Plastic Volumetric Strain
摘要
Abstract
The disturbed state constitutive ( DSC) model, proposed by Desai only considered the affect of plastic deviatoric strain on disturbance state , without considering the plastic volumetric strain .The disturbance function of the disturbed state constitutive ( DSC) model was improved by introducing a coupling-form disturb-ance variable of plastic deviatoric stain trace and plastic volumetric strain trace on the basis of the original dis-turbance function.Triaxial consolidated undrained ( CU) test, triaxial consolidated drained ( CD) test and one dimensional compression test were performed on the wenzhou natural structured soft clay .The DSC consti-tutive model with the improved disturbance function was validated by the test data .The validation results showed that the unimproved model predictsed a slightly higher strength of both undrained and drained test of the natural structured soft clay , and the prediction of the improved model was more accurate .关键词
扰动状态/塑性体积应变/塑性偏应变/本构模型/扰动函数Key words
disturbance state/plastic volumetric strain/plastic deviatoric stain/constitutive model/disturbance function分类
建筑与水利引用本文复制引用
崔允亮,项鹏飞,王新泉,张世民..考虑塑性体积应变的扰动状态本构模型改进[J].郑州大学学报（工学版）,2018,39(1):47-52,6.基金项目
国家自然科学基金资助项目(51508507) （51508507）
浙江省自然科学基金资助项目(LQ16E080007) （LQ16E080007）
浙江省教育厅科研项目(Y201533738) （Y201533738）
