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Author:

Li, Liang (Li, Liang.) (Scholars:李亮) | Wang, Hongwei (Wang, Hongwei.) | Wu, Jun (Wu, Jun.) | Jiang, Wenhua (Jiang, Wenhua.)

Indexed by:

Scopus SCIE

Abstract:

The thermomechanical coupling constitutive model of concrete is a critical subject for the theoretical investigation and numerical simulation of the mechanical behaviors of concrete members and structures at high temperature. This paper presents a thermomechanical coupling constitutive model for the description of the mechanical behaviors of concrete at different temperatures. The expression of the elastic strain increment is derived with the free energy function including the temperature variable. The expression of the plastic strain increment is derived from the yield function based on the Drucker-Prager strength criterion. The elastoplastic damage effect is included in this constitutive model. The damage variable is included in the yield function to consider the effect of the damage on the elastoplastic mechanical behaviors of concrete. The proposed constitutive model is validated by the comparison of the simulation results of the uniaxial compression tests of concrete at different temperatures with the corresponding test results. The simulation results accord well with the test results at different temperatures. This indicates that the proposed constitutive model can characterize the mechanical behaviors of concrete at different temperatures with considerable accuracy. The proposed constitutive model was applied to simulate an axially compressive concrete column. The simulation results are consistent with the essential mechanical response behaviors of concrete members at different temperatures.

Keyword:

concrete thermomechanical coupling thermodynamics constitutive model elastoplastic damage

Author Community:

  • [ 1 ] [Li, Liang]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 2 ] [Wang, Hongwei]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 3 ] [Jiang, Wenhua]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 4 ] [Wu, Jun]Shanghai Univ Engn Sci, Sch Urban Railway Transportat, Shanghai 201620, Peoples R China

Reprint Author's Address:

  • 李亮

    [Li, Liang]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China;;[Wu, Jun]Shanghai Univ Engn Sci, Sch Urban Railway Transportat, Shanghai 201620, Peoples R China

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Source :

APPLIED SCIENCES-BASEL

Year: 2021

Issue: 2

Volume: 11

2 . 7 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:87

JCR Journal Grade:2

Cited Count:

WoS CC Cited Count: 5

SCOPUS Cited Count: 6

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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