A Novel Finite Strain Visco-Hyperelasticity Based Constitutive Model For Elastomers
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Date
May-18
Authors
Thakkar, Rohan
Czekanski, Aleksander
Journal Title
Journal ISSN
Volume Title
Publisher
CSME-SCGM
Abstract
A novel three-dimensional finite strain viscohyperelastic constitutive model is proposed to capture the strain rate dependency of rubber-like materials. The overall material behavior is defined by cumulative description of hyperelasticity and nonlinear viscoelasticity. The hyperelastic part is based on exponential logarithmic Hart-Smith strain energy function and the viscous part comprises of a fading integral which links the current stresses to the applied strain history. The derived analytical framework is verified with respect to experimental data. The potential of the proposed model has been constituted by an excellent fit between proposed model and considered test data.
Description
Keywords
Rubber-like materials, Strain rate, Visco-hyperelasticity, Constitutive modeling, Computational Mechanics, Materials Technology