International Conference on Emerging Trends in Mechanical Engineering (ICETiME-2016) ),September 23-24, 2016 at Faculty of Science and Technology,ICFAI Foundation of Higher Education, Hyderabad, Telangana, India., 2016
The laminated tapered beams are increasingly being used in engineering applications, such as turb... more The laminated tapered beams are increasingly being used in engineering applications, such as turbine blades, helicopter blades, aero-foils, yokes, robot arms and satellite antennas where in the stiffness of the structure needs to be varied along the length of the beam. Such tapered laminated structures, which are formed by dropping off some of the plies at discrete positions over the laminate, have received much attention from researchers because of their structural tailoring capabilities, damage tolerance, and their potential for creating significant weight savings in engineering applications. The inherent weakness of this construction is the presence of material and geometric discontinuities at ply drop region that induce premature inter-laminar failure at interfaces between dropped and continuous plies. In this present work, the effect of these ply drops on the stress distribution on a composite structure is considered. In this work ,three composite models (with symmetry & unsymmetrical orientation angles)aredeveloped with and without ply drop off. The ply-drop off models is considered as external taper type and mid plane taper type. The maximum stress in all the three models is to be compared and the effect of the ply-drop on the stress distribution is to be studied. The effect of fibre orientation and the strength of composites are studied by using ANSYS software to estimate its strength when pressure load is applied.
International Conference on Emerging Trends in Mechanical Engineering (ICETiME-2016) ),September 23-24, 2016 at Faculty of Science and Technology,ICFAI Foundation of Higher Education, Hyderabad, Telangana, India., 2016
The laminated tapered beams are increasingly being used in engineering applications, such as turb... more The laminated tapered beams are increasingly being used in engineering applications, such as turbine blades, helicopter blades, aero-foils, yokes, robot arms and satellite antennas where in the stiffness of the structure needs to be varied along the length of the beam. Such tapered laminated structures, which are formed by dropping off some of the plies at discrete positions over the laminate, have received much attention from researchers because of their structural tailoring capabilities, damage tolerance, and their potential for creating significant weight savings in engineering applications. The inherent weakness of this construction is the presence of material and geometric discontinuities at ply drop region that induce premature inter-laminar failure at interfaces between dropped and continuous plies. In this present work, the effect of these ply drops on the stress distribution on a composite structure is considered. In this work ,three composite models (with symmetry & unsymmetrical orientation angles)aredeveloped with and without ply drop off. The ply-drop off models is considered as external taper type and mid plane taper type. The maximum stress in all the three models is to be compared and the effect of the ply-drop on the stress distribution is to be studied. The effect of fibre orientation and the strength of composites are studied by using ANSYS software to estimate its strength when pressure load is applied.
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