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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국계산역학회 Computers and Concrete, An International Journal Computers and Concrete, An International Journal Vol.24 No.1
- 발행연도
- 2019.1
- 수록면
- 51 - 61 (11page)
이용수
초록· 키워드
오류제보하기
Compressive ability is one of the most important mechanical properties of concrete material .The compressive failure process of concrete is pretty complex with internal tension, shear damage and friction between cracks. To simulate the complex fracture process of concrete at meso level, methodology for meso-structural analysis of concrete specimens is developed; the zero thickness cohesive elements are pre-inserted to simulate the crack initiation and propagation; the constitutive applied in cohesive element is established to describe the mechanism of crack separation, closure and friction behavior between the fracture surfaces. Aseries of simulations were carried out based on the model proposed in this paper. The results reproduced the main fracture and mechanical feature of concrete under compression condition. The effect of key material parameters, structure size, and aggregate content on the concrete fracture pattern and loading carrying capacities was investigated. It is found that the inner friction coefficient has a significant influence on the compression character of concrete, the compression strength raises linearly with the increase of the inner friction coefficient, and the fracture pattern is sensitive to the mesostructure of concrete.
목차
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참고문헌 (41)
참고문헌 신청
Chen, G. / 2015 / 3D meso-scale modelling of concrete material in spall tests / Mater. Struct 48(6):1887~1899
Du, C. B. / 2007 / Numerical simulation of aggregate shapes of two-dimensional concrete and its application / J. Aerosp. Eng 20(3):172~178
Du, X. L. / 2013 / Macroscopic effective mechanical properties of porous dry concrete / Cement Concrete Res 44:87~96
Du, X. L. / 2013 / Meso-element equivalent method for the simulation of macro mechanical properties of concrete / Int. J. Damage Mech 22(5):617~642
Gao, Z. G. / 2003 / Two-dimensional random aggregate structure for concrete / J. Tsinghua Univ. (Sci. Technol. ) 43(5):710~714
Du, C. B. / 2007 / Numerical simulation of aggregate shapes of two-dimensional concrete and its application / J. Aerosp. Eng 20(3):172~178
Du, X. L. / 2013 / Macroscopic effective mechanical properties of porous dry concrete / Cement Concrete Res 44:87~96
Du, X. L. / 2013 / Meso-element equivalent method for the simulation of macro mechanical properties of concrete / Int. J. Damage Mech 22(5):617~642
Gao, Z. G. / 2003 / Two-dimensional random aggregate structure for concrete / J. Tsinghua Univ. (Sci. Technol. ) 43(5):710~714
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