Three-Dimensional Meso-Simulation of Concrete Fracture Performance Based on Cohesive Model

TIAN Liang; MENG Junliang; ZHAO Jian; FAN Lilong; WANG Yuning; ZHANG Chengzhi

doi:10.3724/j.gyjzG23120806

Volume 54 Issue 9

Sep. 2024

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TIAN Liang, MENG Junliang, ZHAO Jian, FAN Lilong, WANG Yuning, ZHANG Chengzhi. Three-Dimensional Meso-Simulation of Concrete Fracture Performance Based on Cohesive Model[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(9): 170-176. doi: 10.3724/j.gyjzG23120806

Citation:

TIAN Liang, MENG Junliang, ZHAO Jian, FAN Lilong, WANG Yuning, ZHANG Chengzhi. Three-Dimensional Meso-Simulation of Concrete Fracture Performance Based on Cohesive Model[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(9): 170-176. doi: 10.3724/j.gyjzG23120806

Citation:

TIAN Liang, MENG Junliang, ZHAO Jian, FAN Lilong, WANG Yuning, ZHANG Chengzhi. Three-Dimensional Meso-Simulation of Concrete Fracture Performance Based on Cohesive Model[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(9): 170-176. doi: 10.3724/j.gyjzG23120806

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Three-Dimensional Meso-Simulation of Concrete Fracture Performance Based on Cohesive Model

doi: 10.3724/j.gyjzG23120806

1. Tianjin Key Laboratory of Civil Structure Protection and Reinforcement, Tianjin Chengjian University, Tianjin 300384, China;
2. CRCC Bridge Engineering Bureau Group Co., Ltd., Tianjin 300300, China;
3. Department of Civil Engineering, Tsinghua University, Beijing 100084, China

Received Date: 2023-12-08
Available Online: 2024-10-18

Abstract

Abstract

Modeling by micromechanics is an effective means to study the macroscopic mechanical properties of concrete. By using the ABAQUS finite element software and cohesive element, a three-dimensional mesoscopic model of concrete specimen with random aggregate distribution was established to simulate the failure state of concrete specimens under static and dynamic compression, and the crack growth state of each stage was compared with that obtained by experimental loading. Based on the effective numerical model, the differences of peak intensity and crack propagation under different loading rates were studied, and the damage evolution value was calculated. The results showed that the stress variation characteristics of the models at different stages were obvious, which were basically consistent with the macroscopic strength of concrete. The failure modes of different components were obviously different, and the compressive strength of internal aggregate was the highest at the beginning of failure. The failure state obtained by numerical simulation was basically consistent with the test results. The damage variables were calculated by the exponential evolution method based on energy parameters, and it was verified that the constitutive model based on brittle fracture could effectively predict the failure process of concrete specimens.
- three-dimensional mesocopic models,
- cohesive unit,
- brittle fracture,
- constitutive relations,
- damage evolution

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References(32)

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