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http://dx.doi.org/10.7234/composres.2019.32.5.258

Prediction and Evaluation of Progressive Failure Behavior of CFRP using Crack Band Model Based Damage Variable  

Yoon, Donghyun (Department of Mechanical Engineering, Chungnam National University)
Kim, Sangdeok (Department of Mechanical Engineering, Chungnam National University)
Kim, Jaehoon (Department of Mechanical Engineering, Chungnam National University)
Doh, Youngdae (HANKUK FIBER GROUP)
Publication Information
Composites Research / v.32, no.5, 2019 , pp. 258-264 More about this Journal
Abstract
In this paper, a progressive failure analysis method was developed using the Hashin failure criterion and crack band model. Using the failure criterion, the failure initiation was evaluated. If the failure initiation is occurred, the damage variables at each failure modes (fiber tension & compression, matrix tension & compression) was calculated according to linear softening degradation behavior and the variables are used to derive the damaged stiffness matrix. The damaged stiffness matrix is reflected to damaged material and the progressive failure analysis is continued until the damage variables to be 1 that complete failure of material. A series of processes were performed using FE commercial code ABAQUS with user defined material subroutine (UMAT). To evaluate the proposed progressive failure model, the experimental results of open hole composite laminate tests was compared with numerical result. Using digital image correlation system, the strain behavior also was compared. The proposed numerical results were coincided well with the experimental results.
Keywords
Composite materials; Progressive failure analysis; Digital image correlation; Damage variable;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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