基于三维晶格离散颗粒模型的混凝土反复拉压本构关系模型

Translated title of the contribution: Cycling Tension-Compression Constitutive Model of Concrete Based on the 3D Lattice Discrete Particle Model

Zhongfeng Zhu, Wenwei Wang*, Gianluca Cusatis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In order to apply the three-dimensional lattice discrete particle model(LDPM) for predicting the mechanical behaviour of concrete under cyclic loading, a modified cycling constitutive model was established. The effective stress-strain was still used for determining the stress-strain relationship under the monotonic loading.While, the constitutive relationships of the tension and shear stress-strain were established separately to ensure a smooth transition from tension state to compression state. The material parameters kt was introduced to control the stiffness attenuation and residual plastic strain under cycling tension-compression. The unloading stiffness Ed and parameter kc were introduced, respectively, to control the unloading-reloading stiffness and energy dissipation under compression. The proposed constitutive model was embedded into the finite element analysis software to simulate the mechanical behavior of concrete members under cycling tension-compression, hydro-static pressure and compression. The analytical results showed that the established cycling constitutive model can effectively simulate stress strain relationships, the residual strain and the energy dissipation of concrete members under different loading schemes.

Translated title of the contributionCycling Tension-Compression Constitutive Model of Concrete Based on the 3D Lattice Discrete Particle Model
Original languageChinese (Traditional)
Pages (from-to)1512-1524
Number of pages13
JournalYingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering
Volume29
Issue number6
DOIs
StatePublished - Dec 2021

Keywords

  • Cycling mechanical behavior
  • Lattice discrete particle model
  • Loading and unloading criteria
  • Numerical simulation
  • Stress-strain relationship
  • Tension-compression constitutive model

ASJC Scopus subject areas

  • Engineering(all)

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