چكيده به لاتين
During the last decades, the application of Fiber Metal Laminates (FMLs) in various industries such as aerospace, automobile, civil, mine and etc. has become increasingly popular. Since these structures are frequently imposed to the impact loading, impact analysis of FMLs during the design process is therefore important. In the present study, the impact response of FMLs stiffened by nanoparticles has been studied experimentally, analytically and numerically which hitherto not studied in the open literature. In the experimental part, the dynamic response of GLARE3-2/1 stiffened by Nylon-66 nanofiber interleaving mats subjected to the drop weight loading is assessed.
In the analytical section, the governing equations are derived based on high-order shear deformation theory using Hamilton’s principle. To capture the contact force history the nonlinear Hertzian contact law is employed and the fourth-order Runge-Kutta scheme is used to solve the nonlinear system of equations. It’s noteworthy that the developed analytical model capable to capture the structural response of any laminated plates with arbitrary geometry and general boundary conditions. The proposed model is verified by experimental data and those are available in the open literature and then the effect of various parameters such as laminate geometry, boundary conditions, impactor mass and velocity, temperature field, carbon nanotube and nano clay on the impact response of GLARE is investigated.
In the numerical part, the penetration phenomena in GLARE is simulated using a nonlinear explicit package, LSDYNA. After verifying the model the stacking sequence, number and location of Nylon-66 nanofiber mats and impactor geometry effect on dynamic response of GLARE has been studied.
Keywords:
FMLs, impact loading, GLARE3/2-1, Nylon-66 nanofiber interleaving mats, nonlinear Hertzian contact law, LSDYNA.
