Journal of Computational & Applied Research in Mechanical Engineering (JCARME)
مقاله 12 ، دوره 9، شماره 1 - شماره پیاپی 17 ، آذر 2019، صفحه 157-171 1.44 M )
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22061/jcarme.2018.2604.1259 نویسندگان
Erfan Mirshekari* ؛ Arash Reza
تاریخ دریافت : 05 خرداد 1396 ،
تاریخ بازنگری : 25 مرداد 1397 ،
تاریخ پذیرش : 04 شهریور 1397
چکیده In this work, transient dynamic stress concentration in a hybrid composite laminate subjected to a sudden internal crack is examined. It is assumed that all fibers lie in one direction and the applied load acts along direction of fibers. Two types arrangements are considered for the fiber; square and hexagonal arrangement. Using shear lag model, equilibrium equations are deduced and upon proper application of initial and boundary conditions, the complete field equations are obtained using finite difference method. The results of dynamic effect of fiber breakage on stress concentration are well examined in presence of a second type fiber. These results are compared to those of their static values in both models. The effect of surface cracks on stress concentration, as a result of fiber breakage, is also examined. The values of dynamic stress concentrations is deduced and compared to those of a lamina. Also, the peak stress concentration during transition time for fibers to reach static equilibrium is calculated and compared with those of static values. کلیدواژهها
Laminate ؛ Crack ؛ Transient Response ؛ Dynamic Stress Concentration ؛ Hybrid
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آمار
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