Uniaxial Tensile Viscoplastic Damage Constitutive Model of Ultra-high Performance Concrete
ZHANG Yiming
REN Xiaodan
ZHAO Xin
Abstract：Based on the viscoplastic theory in the effective stress space,this study establishes a theoretical correlation between the uniaxial dynamic and static tensile behaviors of ultra-high performance concrete(UHPC).The rate sensitivity effects on plastic evolution and damage evolution were investigated,and the criteria for plastic evolution and damage accumulation under dynamic tensile conditions were elucidated.A uniaxial tensile viscoplastic damage constitutive model for UHPC was developed,accompanied by a proposed expression for the dynamic increase factor of tensile strength.In addition,the model was validated against experimental data from both static and dynamic uniaxial tensile tests.The results demonstrate that the proposed constitutive model effectively reproduces the plastic evolution,damage evolution,and stress-strain relationships of UHPC under uniaxial tension,thereby providing a valuable reference for nonlinear analysis of UHPC structures.
Keywords：ultra-high performance concreteviscoplastic damage constitutive modelplastic evolutiondamage evolutionrate sensitivity effectdynamic increase factor
Publication Date：2025-11-30
Online Publishing Date：2025-12-09(First online date of this platform, not the publication date of the document)
Pages：9( 1053-1061 )