Characterization of the Preloaded Hyperelastic Materials Subjected to Linear Vibrations (original) (raw)

Journal of Vibration Engineering & Technologies, 2023

Abstract

This paper proposes the study of the visco-hyperelastic behavior of a rubber sample. This rubber, coded as the BX rubber sample, is simultaneously loaded and subjected to linear vibrations. A multiplicative non-separable variables law of the Nashif has been used to model the behavior that depends on both stretch and frequency. This method allows splitting the intricately combined test performed jointly on both stretch and frequency. On the one hand, we use Young’s complex modulus E∗(휔) calculated from the experimental data, and on the other hand, the hyperelastic characteristics E(휆) of the same material obtained from the experimental tensile curve. The hyperelastic phenomenological Gent–Thomas model and the hyperelastic molecular Flory–Erman model are used to evaluate the combined complex modulus E∗(휆,휔). We obtain results that go in the physical sense, i.e, Young’s modulus increases when the material is stretched, while the damping decreases.

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