Finite element analysis of interfacial and local damage in metal matrix composites
- Louisiana State Univ., Baton Rouge, LA (United States)
The proposed micromechanical damage composite model used here is such that separate local constitutive damage relations are used for each of the matrix and the fiber. This is coupled with the interfacial damage between the matrix and the fiber exclusively. The damage relations are linked to the overall response through a certain homogenization procedure. The elasto-plastic stiffness tensor is derived for the damaged composite. Numerical solutions are obtained using the finite element method for the proposed theory for two types of laminate layups (0/90){sub s} and ({+-} 45){sub s} each consisting of four plies and compared with experimental results. A very good correlation is obtained between the experimental and numerical results. In addition to the damage evolution, the development of plastic zones and the stress-strain response are shown for the two types of laminated layups.
- OSTI ID:
- 175160
- Report Number(s):
- CONF-950686--
- Country of Publication:
- United States
- Language:
- English
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