Free Vibration Analysis of Curved Cantilever Sandwich Structure
Journal Title: International Journal of engineering Research and Applications - Year 2017, Vol 7, Issue 12
Abstract
Structural sandwich construction is used in many air and space vehicles, cargo containers, boats and ships. Sandwich construction offers high strength to weight ratios, good buckling resistance, formability to complex shapes and easy reparability, which are of extremely high importance in aerospace applications. The most common sandwich structure is composed of two thin face sheets with a thicker lightweight, low-stiffness core. In this work an attempt has been made to develop the formulation to find free vibration analysis of a curved cantilever three layered sandwich beam. The formulation for curved sandwich beam is developed using linear displacement field at face layer and non-linear displacement field at core layer. The face layers are assumed to behave according to Euler-Bernoulli theory and the core deforms in shear only. The governing equation of motion is to be derived using Hamilton’s principle in conjunction with dynamic finite element method.The formulation is to be developed for a number of different numerical cases by varying the thickness of core layers and face layers and studied under the fixed free cantilever boundary conditions. The analytical results of the sandwich beams are to be compared with available literature values.
Authors and Affiliations
P. Ravikanth Raju, Ch. Rajesh, Mohammed Zuber, R. Venkat Reddy
Keywords
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