TY - JOUR
T1 - Failure behavior of 2D C/SiC I-beam under bending load
AU - He, Zongbei
AU - Zhang, Litong
AU - Chen, Bo
AU - Liu, Yongsheng
AU - Liu, Xiaoying
N1 - Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2015/11/5
Y1 - 2015/11/5
N2 - In this paper the failure behavior of 2D C/SiC I-beam under bending load was experimentally and numerically investigated. Due to material nonlinearity, the stress redistribution can be found with load increasing. As a result of the inhomogeneity of matrix density, the strength of 2D C/SiC may be different for the top flange and the bottom flange, and especially the difference between tensile strength of top flange and compressive strength of bottom flange plays a critical role in determining the failure modes of 2D C/SiC I-beam. On the other hand, because of the characteristics of manufacture techniques, 2D C/SiC I-beam can be treated as a kind of composite structures with substructures and interfaces. Then, the failure of 2D C/SiC I-beam can be accompanied with delamination of the interfaces. To understand the delamination behavior, the cohesive zone model was adopted and a discount method was used to estimate the properties of the interfaces. Finally, the delamination mechanism was studied.
AB - In this paper the failure behavior of 2D C/SiC I-beam under bending load was experimentally and numerically investigated. Due to material nonlinearity, the stress redistribution can be found with load increasing. As a result of the inhomogeneity of matrix density, the strength of 2D C/SiC may be different for the top flange and the bottom flange, and especially the difference between tensile strength of top flange and compressive strength of bottom flange plays a critical role in determining the failure modes of 2D C/SiC I-beam. On the other hand, because of the characteristics of manufacture techniques, 2D C/SiC I-beam can be treated as a kind of composite structures with substructures and interfaces. Then, the failure of 2D C/SiC I-beam can be accompanied with delamination of the interfaces. To understand the delamination behavior, the cohesive zone model was adopted and a discount method was used to estimate the properties of the interfaces. Finally, the delamination mechanism was studied.
KW - 2D C/SiC composites
KW - Cohesive zone model
KW - Delamination behavior
KW - I-beam
KW - Stress redistribution
UR - http://www.scopus.com/inward/record.url?scp=84937034892&partnerID=8YFLogxK
U2 - 10.1016/j.compstruct.2015.04.066
DO - 10.1016/j.compstruct.2015.04.066
M3 - 文章
AN - SCOPUS:84937034892
SN - 0263-8223
VL - 132
SP - 321
EP - 330
JO - Composite Structures
JF - Composite Structures
ER -