应用数学和力学2017，Vol.38Issue(6)：652-662,11.DOI:10.21656/1000-0887.370254
混凝土轴拉加卸载随机损伤模型的建立与试验验证
A Stochastic Tensile Damage Model for Loading/Unloading of Concrete and Experimental Validation
摘要
Abstract
To analyze the mechanical properties of concrete in the case of tensile loading and unloading,a stochastic elastoplastic tensile damage model of mesoscopic springs was proposed for the axial loading and unloading of concrete,with the loading and unloading stress-strain relationships of concrete deduced.To validate the rationality and accuracy of the model,an experimental research on axial tensile loading and unloading of concrete was carried out,where the concrete parameters and the stress-strain relationships were measured.Comparison between the experimental results and the calculation model results shows that,the model can well predict the ultimate tensile strength,meanwhile nicely depict the strength softening,the residual strain after unloading and the elastic modulus degradation of concrete.关键词
混凝土/轴向拉伸/弹塑性/加卸载/细观弹簧模型Key words
concrete/axial tension/elastoplasticity/loading and unloading/mesoscopic spring model分类
数理科学引用本文复制引用
胡少伟,黄逸群..混凝土轴拉加卸载随机损伤模型的建立与试验验证[J].应用数学和力学,2017,38(6):652-662,11.基金项目
The National Science Fund for Distinguished Young Scholars of China (51325904) （51325904）
The National Natural Science Foundation of China (51279111)国家杰出青年科学基金(51325904) （51279111）
国家自然科学基金(51279111) （51279111）
