Journal article

Large amplitude vibrations of imperfect porous-hyperelastic beams via a modified strain energy

HB Khaniki, MH Ghayesh, R Chin, M Amabili

Journal of Sound and Vibration | Elsevier BV | Published : 2021

Abstract

In this paper, the porous-hyperelastic properties of soft materials are obtained experimentally and a general model for a combination of porosity (of functional type) and hyperelasticity using the Mooney-Rivlin strain energy density is obtained. Porous-hyperelastic samples are fabricated using thermoplastics with different porosities by varying the infill rate of 3D-printing. Following the available standards, the stress-strain behaviour for different samples are obtained and a general model for hyperelastic closed-cell porosity is presented. After obtaining model's characteristics from the experimental testings, a general beam formulation is presented for hyperelastic beams with functional ..

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