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DINAME 2017
XVII International Symposium on Dynamic Problems of Mechanics
THE MECHANICAL BEHAVIOUR OF VISCOELASTIC MATERIALS IN THE FREQUENCY DOMAIN
Submission Author:
DANIEL CASTELLO , RJ
Co-Authors:
Isadora Ruas Henriques, Lavinia Maria Alves Borges, DANIEL CASTELLO
Presenter: DANIEL CASTELLO
doi://10.26678/ABCM.DINAME2017.DIN17-0108
Abstract
In the last few decades, a growing need for new materials for several applications led to the development and the increase of studies in new theories such as viscoelasticity theory. Many efforts have been done to understand and characterize the one-dimensional behavior throughout moduli such as complex modulus, ignoring the role of the viscoelastic Poisson’s ratio. There are just a few studies carried out for this property as well as no consolidated experiments to estimate it despite its importance in the complete characterization of viscoelastic materials. The purpose of this work is to determine the viscoelastic Poisson’s ratio in frequeny domain, n(w), for a viscoelastic material in order to characterize its three-dimensional behavior. To do so, the work is based on the elastic-viscoelastic correspondence principle (EVCP) and the time-temperature superposition principle (TTSP). Measurements of the complex shear modulus, G(w), and the complex modulus, E(w), were performed using a dynamic mechanical analyzer (DMA). To consider eventual uncertainties, the tests were carried out at three test-specimens.
Keywords
3D Viscoelasticity, Characrterization, Complex Modulus, Poisson Ratio
