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DESIGN AND ANALYSIS OF GRID STIFFENED COMPOSITE STRUCTURES32,99 €
Lighter and stiffer structural construction is required for space rockets than those used in aviation. A reduction of only 1 Kg in the weight of a rocket intended for a flight to Mars and back results in saving 2 tons of propellant. At present, sandwich technology is extensively used in Aeronautics and Aerospace fields. Sandwich panels with thin composite face sheets are used due to their ability to produce structures with high stiffness to weight and strength to weight ratios. In this research, Finite Element (FE) model is generated for a particular test configuration of honeycomb sandwich structure with metallic (Aluminium) skins. In this modelling effort, the specimen is modelled in such a way to simulate and analyze in a true sense. Stability and non linear analysis is carried out using FEA software SAMCEF. With geometric and material nonlinearity, the results are then compared with the experimental ones. Force displacement curves acquired from FEA and 3point bending test seem good enough for comparison.