SOLUTION OF LARGE STRAIN HYPERELASTIC PROBLEMS USING FINITE ELEMENT METHOD

Abstract

The hyperelastic material (elastomer) is a cross linked polymer consisting of molecules chain- linked together by bonds. The properties of this material (Excellent damping, energy absorption characterisitcs , flexibility, resilience, long service life ,moldability etc) increase its applications in various fields. Many machine elements incorporate the elastomer components such as tyres ,center bearing supports, pressurised cylinder, cables etc. For all the components to perform their functions properly it become necessary to know the behaviour of these material under various loading conditions. Present work describes the behaviour of the hyperleastic material subjected to large strain by using the code Flagshyp(Finite Element Large Strain Hyperleastic Program) written by Javier Bonet and Richard D.Wood . In this Work three hyperelastic constitutive models i.e. Odgen model, Incompressible neo-hookean model and Mooney-Rivlin model have been used to solve the hyperelastic problems (truss , plate with hole and pressurised Cylinder) subjected to large strain.