What is the difference between elastic and viscous?
Whereas elasticity is usually the result of bond stretching along crystallographic planes in an ordered solid, viscosity is the result of the diffusion of atoms or molecules inside an amorphous material.
What is viscose elastic?
Visco elastic foam is another term for memory foam. It is a blend of polyurethane foam that was developed for airplane cushions by a NASA contract in the 1970s. The difference between visco elastic foam and other types of polyurethane foam is its slow response and low resistance.
What is viscous strain?
Viscous flow is irreversible, once a body has been distorted stays that way, producing a permanent strain. All liquids show viscous behavior when strained, think when you squeeze toothpaste from a tube. During viscous behavior strain accumulates as a function of time, as shown in Figure 1.7.
What are the effects of viscoelasticity?
Viscoelasticity is the property of materials that exhibit both viscous and elastic characteristics when undergoing deformation. Synthetic polymers, wood, and human tissue, as well as metals at high temperature, display significant viscoelastic effects.
What are the examples of elastic materials?
Examples: Rubber bands and elastic and other stretchy materials display elasticity.
What is the difference between viscoelastic and viscoplastic?
Popular Answers (1) From a rheological perspective, the primary difference between a viscoplastic and viscoelastic material is the presence of a yield stress. A viscoplastic material has a yield stress under which it will not deform, whereas a viscoelastic material will deform at any application of stress.
What causes viscoelasticity in polymers?
Viscoelasticity is caused by temporary connections between fiber-like particles. Polymers always show a viscoelastic behavior because they consist of long molecules able to make temporary connections with their neighbors.
What is the difference between visco and memory foam?
Is viscosity reversible?
It is well known that the flow of a slowly sheared viscous liquid is reversible.
What is elastic material?
What are elastic materials? Elasticity is the tendency of solid materials to return to their original shape after forces are applied on them. When the forces are removed, the object will return to its initial shape and size if the material is elastic.