Using finite element model in calculation of stress concentration factor around an elliptical hole in composite hybrid lamina
الموضوعات :
فصلنامه شبیه سازی و تحلیل تکنولوژی های نوین در مهندسی مکانیک
Pedram Lorzadeh
1
1 - Islamic Azad University Ahvaz Branch
تاريخ الإرسال : 24 الإثنين , جمادى الثانية, 1439
تاريخ التأكيد : 07 الخميس , ربيع الأول, 1440
تاريخ الإصدار : 19 الإثنين , جمادى الثانية, 1442
الکلمات المفتاحية:
Hole,
Hybrid composites,
Lamina,
Keywords: Finite Element Method(FEM),
Stress Concentration Factor(SCF),
ملخص المقالة :
The hybrid composites have exceptional properties such as strength to weight and hardness ratios. These characteristics make the application of these materials in the aerospace industry. In composite materials, there are various fittings, such as a bolt and a rivet, which is the focus of stress concentration in the joints because the fibers are damaged. In this research in hybrid composite materials, a high elastic modulus fiber (HM) and a low elastic modulus fiber (LM) are used. It is also assumed that the length of the sheet is infinite. The force on the lamina is tensile force which applies on matrix and fibers while the fibers in the layers are one directed. In this paper the effects of different parameters such as ,number of broken fibers and the ratio of (LM) to (HM) fiber extensional stiffness.By using finite element method (FEM) modeling and investigation geometrical and crack modeling, stress concentration factor (SCF) around a elliptical hole is calculated and compared with the results obtained from reference.The results of the validation showed that compared to the reference data are close to each other, indicating the correctness of the code written for the analysis.
المصادر:
Birgani, P. T., & Shishesaz, M. (2017). Symmetric hole stress concentration in a hybrid composite lamina subjected to matrix plasticity. Journal of Mechanical Science and Technology, 31(7), 3337-3345.
Taghipour Birgani, P. (2015). The effect of volume fractions on hole stress concentration in composite lamina subjected to matrix plasticity. Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering, 8(2), 137-148.
Saini, P. K., & Kushwaha, M. (2014). Stress variation around a circular hole in functionally graded plate under bending. International Journal of Mechanical and Mechatronics Engineering, 8(3), 538-542.
Birgani, P. T., & Shishesaz, M. (2017). Symmetric hole stress concentration in a hybrid composite lamina subjected to matrix plasticity. Journal of Mechanical Science and Technology, 31(7), 3337-3345.
Khechai, A., Tati, A., & Guettala, A. (2014). Finite element analysis of stress concentrations and failure criteria in composite plates with circular holes. Frontiers of Mechanical Engineering, 9(3), 281-294.
Wankar, A., Bayas, J., & Mishra, H. (2016) Relation between hole diameter to width ratio and scf of rectangular plate having central circular hole, IJARIIE, 2(2).
Hu, F. Z., Soutis, C., & Edge, E. C. (1997). Interlaminar stresses in composite laminates with a circular hole. Composite structures, 37(2), 223-232.
Wari, R., & Lalge, V. (2014). Analysis of stress concentration of laminated composite plate with circular hole. International Journal of Innovations In Engineering Research And Technology, 1.
Abu-Farsakh, G. A., Almasri, A. H., & Qa’dan, D. H. (2015). Stress concentration around a central hole as affected by material nonlinearity in fibrous composite laminated plates subject to in-plane loading. Science and Engineering of Composite Materials, 22(1), 31-36.
Dipen, B., & Dipal, P. (2015). Stress concentration factor converts into stress intensity factor using ANSYS. European Journal of Advances in Engineering and Technology, 2(1), 46-49.
