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Title: Determining the stress-crack opening relationship of SFRM by inverse analysis
Authors: Chen, S.-P.
Tan, K.H. 
Keywords: Crack mouth opening displacement
Fictitious crack model
Inverse analysis
Notched beam
Steel fiber reinforced mortar
Issue Date: Apr-2008
Citation: Chen, S.-P.,Tan, K.H. (2008-04). Determining the stress-crack opening relationship of SFRM by inverse analysis. Gongcheng Lixue/Engineering Mechanics 25 (4) : 165-170. ScholarBank@NUS Repository.
Abstract: The stress-crack opening relationship is a basic material input in fracture mechanics-based design methodology and numerical simulation for fiber reinforced cementitious composites. In the present study, the tensile stress-crack opening relationship of steel fiber reinforced mortar (SFRM) is determined by inverse analysis using load versus crack mouth opening displacement (CMOD) curve from notched beam tests. Five series of SFRM with different steel fiber volume fractions (from 0.5% to 2.5%) were tested. Direct tension tests were performed to obtain the tensile strength of SFRM. Behavior of the SFRM is classified into two types: CMOD-softening and CMOD-hardening. The results show that the tri-linear model can be used to model the stress-crack opening relationship of SFRM with CMOD-softening behavior, and the drop-constant model can be used to simulate the stress-crack opening relationship of SFRM with CMOD-hardening behavior.
Source Title: Gongcheng Lixue/Engineering Mechanics
ISSN: 10004750
Appears in Collections:Staff Publications

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