Authors
Renata M Soares, Paulo B Gonçalves
Publication date
2018/3
Journal
Meccanica
Volume
53
Pages
937-955
Publisher
Springer Netherlands
Description
The aim of the present work is to investigate the nonlinear vibration response and stability of a pre-stretched rectangular hyperelastic membrane resting on a nonlinear elastic foundation. The membrane is composed of an isotropic, homogeneous and hyperelastic material, which is modeled with four different constitutive laws, specifically: neo-Hookean, Mooney–Rivlin, Yeoh and Ogden hyperelastic models. The elastic foundation is described by a Winkler type nonlinear model with cubic hardening or softening nonlinearity. First the exact solution of the membrane under a biaxial stretch is obtained. Then the equations of motion of the pre-stretched membrane resting on the nonlinear foundation are derived. From the linearized equations, the natural frequencies and mode shapes of the membrane are obtained analytically. Then the natural modes are used to approximate the nonlinear deformation field using …
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