期刊
JOURNAL OF COMPOSITE MATERIALS
卷 46, 期 19-20, 页码 2431-2442出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0021998312449888
关键词
Micromechanics of failure; nonlinear; strength; progressive damage; three-dimensional loading
资金
- AFOSR
- Hanyang University
- Ministry of Knowledge Economy (MKE), Republic of Korea [2010101030005B] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [과C6A1809] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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