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논문 기본 정보

자료유형
학술저널
저자정보
Jinhui Ren (Hohai University) Zhenghong Tian (Hohai University) Jingwu Bu (Hohai University)
저널정보
한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.12 No.6
발행연도
2018.9
수록면
817 - 834 (18page)

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초록· 키워드

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A user-defined bonded-particle model (UBM) which is based on the modified parallel bond was established in this paper to investigate the tensile and compressive failure mechanism of concrete on the three-dimensional (3D) level. The contact constitutive relation and the failure criterion of the UBM can be added to the commercial discrete element software PFC<SUP>3D</SUP> by compiling them as a dynamic link library file and loading it into PFC<SUP>3D</SUP> whenever needed. In addition, the aggregate particles can be generated according to the volume fraction and the shape of each aggregate is irregular. Then, by comparing the results of numerical simulation with the results of laboratory tests, it is found that this bonded-particle model can simulate the tensile and compressive failure process of concrete well to a certain extent. Specifically, the two have basically similar failure patterns and stress–strain responses no matter under tension or compression loading condition. All results indicate that this UBM is a promising tool in understanding and predicting the tensile and compressive failure process of concrete.

목차

Abstract
1 Background
2 3D Mathematical Model of Concrete Specimen
3 Assignment of the Mesoscopic Mechanical Parameters
4 Tests of Numerical Model and Physical Model
5 Comparison of Numerical and Experimental Results
6 Discussion and Conclusions
References

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