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Anonlinearfinite elementprogram takinginto accountofthe nonlinearshearstress strainrelationisused to simulatethe progressive damage ofcompositelaminates with a circularhole subjectedtotensileloading.Stress, strain,and ultimate strength ofthe laminate are analyzed. Comparison between calculated result and test data showsthatthe nonlinear approach gives more accurateresult,especiallyfororthotropiclaminate .Parametricstudy showsthatthe variation ofnonlinearfactorhas more effectontheresultfor orthotropic platethanforquasi isotropic plate.
Anonlinearfinite elementprogram takinginto accountofthe nonlinearshearstress strainrelationisused to simulatethe progressive damage ofcompositelaminates with a circularhole subjectedototileileloading.Stress, strain, and ultimate strength ofthe laminate are analyzed. Comparison between calculated result and test data show that the nonlinear approach gives more accurateresult, especially forhothotropic laminate. Parametric study show that the variation ofnonlinearfactorhas more effectontheresult orthotropic platethanforquasi isotropic plate.