Study on a 2D Mesoscopic Modeling Method for Concrete With Voids

CHEN Qingqing; ZHANG Yuhang; ZHANG Jie; WANG Zhiyong; WANG Zhihua

doi:10.21656/1000-0887.400058

Volume 41 Issue 2

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Article Navigation > Applied Mathematics and Mechanics > 2020 > 41(2): 182-194

CHEN Qingqing, ZHANG Yuhang, ZHANG Jie, WANG Zhiyong, WANG Zhihua. Study on a 2D Mesoscopic Modeling Method for Concrete With Voids[J]. Applied Mathematics and Mechanics, 2020, 41(2): 182-194. doi: 10.21656/1000-0887.400058

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Study on a 2D Mesoscopic Modeling Method for Concrete With Voids

doi: 10.21656/1000-0887.400058

Institute of Applied Mechanics, College of Mechanical and Vehicle Engineering; Shanxi Key Laboratory of Material Strength & Structural Impact, Taiyuan University of Technology, Taiyuan 030024, P.R.China

Funds: The National Natural Science Foundation of China(11702186;11390361;11390362)

Received Date: 2019-02-25
Rev Recd Date: 2019-04-18
Publish Date: 2020-02-01

Abstract

Abstract

According to the meso-structure of concrete, a high-efficiency stepwise overlap checking method was proposed based on traditional 2D modeling. Voids were introduced directly into the models and different concrete meso-structures were generated. The method involves various models containing circular, elliptical or polygonal aggregates and circular or elliptical voids. Meanwhile, several modeling examples based on different area fractions and different shapes of aggregates and voids were given to prove the computation efficiency of the proposed algorithm. At last, the mechanical behaviors of standard concrete specimens under uniaxial compression were simulated. The effects of internal voids on the main paths of crack propagation, concrete failure modes and macroscopic mechanical performances were analyzed.
- concrete,
- meso-structure,
- void,
- overlap checking,
- crack propagation

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References(21)

References

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