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Progressive Damage and Failure Model for Composite Laminates under Multiaxial Loading Conditions

Amaya, Peter
http://rave.ohiolink.edu/etdc/view?acc_num=osu1338381439

Abstract Details

2012, Master of Science, Ohio State University, Civil Engineering.
A progressive damage and failure model is proposed for continuous fiber reinforced composite laminates under triaxial loading conditions. A literature review with emphasis on macromechanics based failure theories applied to composite laminates under static loading conditions shows that there is a need to validate failure models for composite laminates under triaxial loading conditions. Available experimental data show that the mechanical behavior and progressive damage of composite laminates may be different under multiaxial loading than under uniaxial loading conditions. The proposed failure model is an extension of the strain energy failure theory for triaxial loading conditions. The proposed strain energy model requires six parameters in order to predict the mechanical behavior and progressive damage of a composite laminate. Three material parameters are determined through laboratory tests involving unidirectional laminates subjected to multiaxial loading or multidirectional laminates subjected to uniaxial loading. The remaining three model parameters are used to represent unloading of failed lamina after initial failure has occurred. The proposed strain energy based failure theory and post initial-failure degradation model are combined with a stress field developed using either classical lamination theory or the finite element method using reduced integration quadratic hexahedral elements. The proposed failure model with classical lamination theory stress field gave adequate predictions compared with published experimental results for the initial failure, progressive damage, and final failure for tubular specimens under combined torsion and hydrostatic pressure as well as cylindrical dogbone specimens under combined uniaxial loading and hydrostatic pressure. The proposed failure model with the finite element stress field was able to adequately model stress concentrations near the free edges as well as predict initial, intermediate, and final failures for a cross-ply coupon under uniaxial extension as compared with experimental data. The validation of the proposed model suggests that it may be extended to predict the progressive damage and failure of composite laminate structures of complex geometries under complex loading conditions.
Tarunjit Butalia, PhD (Advisor)
Ethan Kubatko, PhD (Committee Member)
William Wolfe, PhD (Committee Member)

Recommended Citations

Citations

  • Amaya, P. (2012). Progressive Damage and Failure Model for Composite Laminates under Multiaxial Loading Conditions [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338381439

    APA Style (7th edition)

  • Amaya, Peter. Progressive Damage and Failure Model for Composite Laminates under Multiaxial Loading Conditions. 2012. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1338381439.

    MLA Style (8th edition)

  • Amaya, Peter. "Progressive Damage and Failure Model for Composite Laminates under Multiaxial Loading Conditions." Master's thesis, Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338381439

    Chicago Manual of Style (17th edition)

osu1338381439
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© 2012, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.