TY - JOUR
T1 - Simulation of compressive failure in quasi-brittle materials involving contact on crack interfaces
AU - Kamino, Shinya
AU - Kurumatani, Mao
AU - Terada, Kenjiro
AU - Kyoya, Takashi
AU - Kashiyama, Kazuo
PY - 2014
Y1 - 2014
N2 - This paper proposes a method for simulating compressive failure in quasi-brittle materials involving microor meso-scale contact on crack interfaces. The macroscopic compressive failure is assumed to be caused by tensile and shear fractures at micro-scale, both of whose traction-crack-opening behavior is represented by the cohesive crack model. The penalty method is employed to realize the frictional contact on cracked interfaces under compressive loading. First, the discrete micro-crack behavior is introduced to a finite ele- ment framework in consideration of material inhomogeneity of cement-based materials and by using penalty springs. Then, after verifying the basic performance for simulating fracture behavior involving tensile or shear cracks, we examine the role of the micro-scale frictional contact behavior on the compressive fracture behavior. Finally, a numerical example is presented to demonstrate the validity of the proposed method in comparison with the experimental result, reported in the literature, for the compressive fracture behavior in mortar and cement paste.
AB - This paper proposes a method for simulating compressive failure in quasi-brittle materials involving microor meso-scale contact on crack interfaces. The macroscopic compressive failure is assumed to be caused by tensile and shear fractures at micro-scale, both of whose traction-crack-opening behavior is represented by the cohesive crack model. The penalty method is employed to realize the frictional contact on cracked interfaces under compressive loading. First, the discrete micro-crack behavior is introduced to a finite ele- ment framework in consideration of material inhomogeneity of cement-based materials and by using penalty springs. Then, after verifying the basic performance for simulating fracture behavior involving tensile or shear cracks, we examine the role of the micro-scale frictional contact behavior on the compressive fracture behavior. Finally, a numerical example is presented to demonstrate the validity of the proposed method in comparison with the experimental result, reported in the literature, for the compressive fracture behavior in mortar and cement paste.
KW - Cement-based materials
KW - Compressive failure
KW - Contact on crack interfaces
KW - Discrete cohesive cracks
KW - Voronoi diagram
UR - http://www.scopus.com/inward/record.url?scp=84899418933&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84899418933&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:84899418933
VL - 2014
JO - Transactions of the Japan Society for Computational Engineering and Science
JF - Transactions of the Japan Society for Computational Engineering and Science
SN - 1344-9443
ER -