Transcription of ELASTOMER RATE-DEPENDENCE: A TESTING AND …
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ELASTOMER RATE-DEPENDENCE: A TESTING AND …
Copyright 2007 Dassault Syst mes ELASTOMER RATE- dependence : A TESTING AND MATERIAL MODELING METHODOLOGYTod Dalrymple and Jaehwan ChoiDASSAULT SYST MES SIMULIA Lakes RegionNorthville, MichiganandKurt MillerAxel Products Arbor, MichiganPresented at the Fall 172nd Technical Meeting of theRubber Division of the American Chemical Society, 2007 Dassault Syst mesOverview Motivation and Background TESTING Comments Stress-relaxation TESTING Prony Series Viscoelasticity Family of Constant Strain-Rate TESTING Summary and Conclusions3 Copyright 2007 Dassault Syst mesMotivation and Background Time- dependence of elastomers Stress Relaxation curve fitting exits in Abaqus/CAE for Prony series viscoelastic material definition Well defined recipe Relatively common for sealing applications (long time) New application for time domain dynamic impact events Desire to capture rate- dependence of stress-strain curves Typical test data is often a family of constant str
G 0 and K 0 are determined from the elasticity definition. • These are simply a sum of a series of exponential decays. • For many solid elastomers, the relaxation behavior is dominated by
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