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Article

A Damage Model Reflecting the Interaction between Delamination and Intralaminar Crack for Failure Analysis of FRP Laminates

1
Faculty of Mechanics, Kim Il Sung University, Pyongyang 950003, D.P.R. Korea
2
Faculty of Mechanical Engineering, Kimchaek University of Technology, Pyongyang 950003, D.P.R. Korea
3
College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China
4
Information Center, Kim Il Sung University, Pyongyang 950003, D.P.R. Korea
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(2), 314; https://doi.org/10.3390/app9020314
Submission received: 3 December 2018 / Revised: 27 December 2018 / Accepted: 2 January 2019 / Published: 16 January 2019

Abstract

In this paper, a progressive damage model reflecting the interaction between delamination and intralaminar crack is developed to predict fracture behaviors and the ultimate load-bearing ability of the fiber-reinforced polymer laminates subject to quasi-static load. Initiation and evolution of intralaminar crack in composites are modeled using a continuum damage mechanics model, which has the capability to reliably predict the discrete crack direction by introducing the crack direction parameter while analyzing the multi-failure of FRP composites. Delamination is modeled using a cohesive zone method with the mixed bilinear law. When the continuum damage model and cohesive zone model are used together, the interactive behavior between multiple failure mechanisms such as delamination induced by matrix cracking often seen in the failure of composite laminates is not generally captured. Interaction between delamination and intralaminar crack in FRP composite structures is investigated in detail and reflected in a finite element analysis in order to eliminate the drawbacks of using both models together. Good agreements between numerical results and experimental data are obtained.
Keywords: continuum damage mechanics; cohesive zone model; delamination; intralaminar crack; interaction; computational fracture mechanics continuum damage mechanics; cohesive zone model; delamination; intralaminar crack; interaction; computational fracture mechanics

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MDPI and ACS Style

Yun, K.; Kwak, S.; Wang, Z.; Chang, M.; Kim, J.; Liu, J.; Ri, C. A Damage Model Reflecting the Interaction between Delamination and Intralaminar Crack for Failure Analysis of FRP Laminates. Appl. Sci. 2019, 9, 314. https://doi.org/10.3390/app9020314

AMA Style

Yun K, Kwak S, Wang Z, Chang M, Kim J, Liu J, Ri C. A Damage Model Reflecting the Interaction between Delamination and Intralaminar Crack for Failure Analysis of FRP Laminates. Applied Sciences. 2019; 9(2):314. https://doi.org/10.3390/app9020314

Chicago/Turabian Style

Yun, Kumchol, Songhun Kwak, Zhenqing Wang, Mengzhou Chang, Jonggun Kim, Jingbiao Liu, and Cholsu Ri. 2019. "A Damage Model Reflecting the Interaction between Delamination and Intralaminar Crack for Failure Analysis of FRP Laminates" Applied Sciences 9, no. 2: 314. https://doi.org/10.3390/app9020314

APA Style

Yun, K., Kwak, S., Wang, Z., Chang, M., Kim, J., Liu, J., & Ri, C. (2019). A Damage Model Reflecting the Interaction between Delamination and Intralaminar Crack for Failure Analysis of FRP Laminates. Applied Sciences, 9(2), 314. https://doi.org/10.3390/app9020314

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