Practical Differences Between Linear and Non-Linear Viscoelasticity

Linear Viscoelasticity

Non-Linear Viscoelasticity

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2 thoughts on “Practical Differences Between Linear and Non-Linear Viscoelasticity”

  1. Yuhai Xiang

    Hi Gorgen,

    I am confused about the definition of linear viscoelasticity. The linear viscoelasticity should obey: E(t)=sigma(t)/epsilon0; Obviously, hyperelastic response+stress relaxation modulus does not satisfy the definition of linear viscoelasticity.
    Is there no consistency for the definition of linear viscoelasticiy?
    thanks!

    Best,
    Yuhai

  2. You can define linear viscoelasticity as either: (linear elastic) + (Prony series), or (hyperelastic) + (Prony series). I prefer the second definition, since it is more useful in practice.
    /Jorgen

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