In materials science and continuum mechanics, viscoelasticity is the property of materials that exhibit both viscous and elastic characteristics when undergoing deformation. Viscous materials, like water, resist both shear flow and strain linearly with time when a stress is applied.
Hence, viscoelasticity is the property of materials that exhibit both viscous and elastic characteristics when undergoes deformation as a result of applied stress. Viscous materials, like water, resist shear flow and strain linearly with time when a stress is applied.
The storage modulus gives information about the amount of structure present in a material. It represents the energy stored in the elastic structure of the sample. If it is higher than the loss modulus the material can be regarded as mainly elastic, i.e. the phase shift is below 45°.
We can see that if G00 = 0 then G0 takes the place of the ordinary elastic shear modulus G0: hence it is called the storage modulus, because it measures the material's ability to store elastic energy. Similarly, the modulus G00 is related to the viscosity or dissipation of energy: in other words, the energy which is lost.
Viscous materials, like water, resist shear flow and strain linearly with time when a stress is applied. Viscoelastic behavior is a combination of elastic and viscous behaviors where the applied stress results in an instantaneous elastic strain followed by a viscous, time-dependent strain.
It is a property of viscoelastic materials. Viscoelasticity is studied using dynamic mechanical analysis where an oscillatory force (stress) is applied to a material and the resulting displacement (strain) is measured.
OverviewBackgroundElastic versus viscoelastic behaviorLinear viscoelasticity and nonlinear viscoelasticityConstitutive models of linear viscoelasticityConstitutive models for nonlinear viscoelasticityProny seriesEffect of temperature
In materials science and continuum mechanics, viscoelasticity is the property of materials that exhibit both viscous and elastic characteristics when undergoing deformation. Viscous materials, like water, resist both shear flow and strain linearly with time when a stress is applied. Elastic materials strain when stretched and immediately return to their original state once the stress is removed. Viscoelastic materials have elements of both of these properties and, as such, exhibit time-depe…