| Summary: | 碩士 === 國立成功大學 === 土木工程學系碩博士班 === 94 === In this study, using a nonlinear failure analysis model, for predicting the response of composite laminate, which has pin concentrated load on the hole and lateral constrained load with washers. A nonlinear failure load analysis mode, which includes nonlinear constitutive law, mixed failure criterion and post failure mode.
The fiber and matrix are assumed to have elastic-plastic behavior and to behave nonlinear with a variable shear parameter, as the composite lamina being in the pre-damage region, which the response of an individual lamina within the laminate is described by the nonlinear law. Beginning the local damage on individual lamina is detected by the mixed failure criterion, which is composed of Tasi-Wu failure criterion and maximum stress criterion. The fiber and in-plane shear are assumed to exhibit brittle behavior, and the matrix is assumed to exhibit degrading behavior.
Finally, the nonlinear failure analysis model has been compared with the experimental results and the predictions by other criteria. It is proved that the model is suitable analysis model to predict the response of composite laminate, which has pin concentrated load on the hole and lateral constrained load with washers.
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