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  2. Viscoelasticity - Wikipedia

    en.wikipedia.org/wiki/Viscoelasticity

    Viscoelastic materials have elements of both of these properties and, as such, exhibit time-dependent strain. 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.

  3. Ophthalmic viscosurgical device - Wikipedia

    en.wikipedia.org/wiki/Ophthalmic_viscosurgical...

    The rheologic properties of an OVD directly affect its clinical characteristics. An OVD can be chosen that best matches the requirements for a specific procedure, or part of a procedure, and combinations may be useful. [2] Viscoelasticity is the property of materials that exhibit both viscous and elastic characteristics when undergoing deformation.

  4. Maxwell material - Wikipedia

    en.wikipedia.org/wiki/Maxwell_material

    A Maxwell material is the most simple model viscoelastic material showing properties of a typical liquid. It shows viscous flow on the long timescale, but additional elastic resistance to fast deformations. [1] It is named for James Clerk Maxwell who proposed the model in 1867.

  5. Generalized Maxwell model - Wikipedia

    en.wikipedia.org/wiki/Generalized_Maxwell_model

    The generalized Maxwell model also known as the Maxwell–Wiechert model (after James Clerk Maxwell and E Wiechert [1] [2]) is the most general form of the linear model for viscoelasticity. In this model, several Maxwell elements are assembled in parallel. It takes into account that the relaxation does not occur at a single time, but in a set ...

  6. Standard linear solid model - Wikipedia

    en.wikipedia.org/wiki/Standard_Linear_Solid_model

    The standard linear solid (SLS), also known as the Zener model after Clarence Zener, [1] is a method of modeling the behavior of a viscoelastic material using a linear combination of springs and dashpots to represent elastic and viscous components, respectively.

  7. Dynamic modulus - Wikipedia

    en.wikipedia.org/wiki/Dynamic_modulus

    The ratio of the loss modulus to storage modulus in a viscoelastic material is defined as the ⁡, (cf. loss tangent), which provides a measure of damping in the material. tan ⁡ δ {\displaystyle \tan \delta } can also be visualized as the tangent of the phase angle ( δ {\displaystyle \delta } ) between the storage and loss modulus.

  8. Time–temperature superposition - Wikipedia

    en.wikipedia.org/wiki/Time–temperature...

    Some materials, polymers in particular, show a strong dependence of viscoelastic properties on the temperature at which they are measured. If you plot the elastic modulus of a noncrystallizing crosslinked polymer against the temperature at which you measured it, you will get a curve which can be divided up into distinct regions of physical ...

  9. Kelvin–Voigt material - Wikipedia

    en.wikipedia.org/wiki/Kelvin–Voigt_material

    A Kelvin–Voigt material, also called a Voigt material, is the most simple model viscoelastic material showing typical rubbery properties. It is purely elastic on long timescales (slow deformation), but shows additional resistance to fast deformation.