Benchmarking of triaxial failure criteria for composite laminates: Comparison between models of ‘Part (A)’ of ‘WWFE-II’

This article gives details of the input data provided for use in the Second World-Wide Failure Exercise (WWFE-II) for benchmarking triaxial failure criteria. It includes (a) three-dimensional elastic constants, ultimate strains and strengths and the nonlinear stress-strain curves for five unidirectional laminae and their constituents and (b) a description of 12 challenging test cases of 5 composite laminates, the lay-ups, layer thicknesses, stacking sequences and the loading conditions. The originators of 3D failure theories were requested to use the exact data provided here in their blind predictions of the test cases. The instructions issued to the contributors are also presented at the end of this article.

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“…Axial compressive stress-strain curves for (þ35 /À35 ) s glass/epoxy laminate under x ¼ z ¼ À100 MPa 15. …”

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confidence: 99%

Input data for test cases used in benchmarking triaxial failure theories of composites

Kaddour

Hinton

2012

Journal of Composite Materials

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175

152

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“…MMF was reported to be able to predict successfully both the initial and final failures for all the 12 specified test cases (Kaddour and Hinton 2012). MMF is different from conventional methods primarily in two ways.…”

Section: Modelling Mechanical Behaviour Of Braided Compositesmentioning

confidence: 99%

Modelling of Damage Evolution in Braided Composites: Recent Developments

Wang

Roy

Zhong

2017

Mech Adv Mater Mod Process

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Composites reinforced with woven or braided textiles exhibit high structural stability and excellent damage tolerance thanks to yarn interlacing. With their high stiffness-to-weight and strength-to-weight ratios, braided composites are attractive for aerospace and automotive components as well as sports protective equipment. In these potential applications, components are typically subjected to multi-directional static, impact and fatigue loadings. To enhance material analysis and design for such applications, understanding mechanical behaviour of braided composites and development of predictive capabilities becomes crucial. Significant progress has been made in recent years in development of new modelling techniques allowing elucidation of static and dynamic responses of braided composites. However, because of their unique interlacing geometric structure and complicated failure modes, prediction of damage initiation and its evolution in components is still a challenge. Therefore, a comprehensive literature analysis is presented in this work focused on a review of the state-of-the-art progressive damage analysis of braided composites with finite-element simulations. Recently models employed in the studies on mechanical behaviour, impact response and fatigue analyses of braided composites are presented systematically. This review highlights the importance, advantages and limitations of as-applied failure criteria and damage evolution laws for yarns and composite unit cells. In addition, this work provides a good reference for future research on FE simulations of braided composites.

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“…16 In addition, the MMF predictions will be compared with experimental data in a future publication, as a part of Part B of the WWFE-II.…”

Section: Test Casementioning

confidence: 99%

Prediction of three-dimensional composite laminate response using micromechanics of failure

Huang

2012

Journal of Composite Materials

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A three-dimensional micromechanics of failure model was developed and applied in order to predict triaxial failure envelopes and stress-strain curves for 12 test cases in the Second World-Wide Failure Exercise (WWFE-II), which involves five continuous fiber-matrix laminates and multi-axial loadings, including those in through-thickness direction. The micromechanics of failure is based on micromechanical unit cell models, which characterize the microstructure of composites, and consists of independent constituent failure criteria and a progressive damage model for the matrix. Nonlinear ply behavior in the matrix-dominant directions was successfully simulated. Thermal stresses were also considered. Results of prediction were presented together with an explanation of the phenomena.

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Benchmarking of triaxial failure criteria for composite laminates: Comparison between models of ‘Part (A)’ of ‘WWFE-II’

Cited by 54 publications

References 15 publications

Input data for test cases used in benchmarking triaxial failure theories of composites

Input data for test cases used in benchmarking triaxial failure theories of composites

Modelling of Damage Evolution in Braided Composites: Recent Developments

Prediction of three-dimensional composite laminate response using micromechanics of failure

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