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Steel and Composite Structures
  Volume 12, Number 1, January 2012, pages 53-72

Compression failure and fiber-kinking modelingof laminated composites
A. Kabiri Ataabadi, S. Ziaei-Rad, and H. Hosseini-Toudeshky

    In this study, the physically-based failure models for matrix and fibers in compression and tension loading are introduced. For the 3D stress based fiber kinking model a modification is proposed for calculation of the fiber misalignment angle. All of these models are implemented into the finite element code by using the advantage of damage variable and the numerical results are discussed. To investigate the matrix failure model, purely in-plane transverse compression experiments are carried out on the specimens made by Glass/Epoxy to obtain the fracture surface angle and then a comparison is made with the calculated numerical results. Furthermore, shear failure of (
Key Words
    laminated composite; compression; fiber-kinking; matrix failure.
A. Kabiri Ataabadi and S. Ziaei-Rad : Department of Mechanical Eng., Isfahan University of Technology, Isfahan 84156-83111, Iran
H. Hosseini-Toudeshky : Department of Aeronatical Eng., Amirkabir University of Technology, Hafez Ave., Tehran, Iran

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