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sara_87
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Homework Statement
A voigt solid is a model viscoelastic material which in uniaxial tension has the stress-strain relation [tex]\sigma[/tex]=E0([tex]\epsilon[/tex]+t0[tex]\dot{\epsilon}[/tex]),
where E0 and t0 are constants.
1) sketch the creep and stress relaxation curves for this material.
2) show that the relaxation function is E0{1+t0[tex]\delta[/tex](t-[tex]\tau)[/tex]}
3) give a 3-dimensional generalisation of the above constitutive equation for an incompressible isotropic material.
Homework Equations
[tex]\delta[/tex]Tij(t)=Gijkl(t-[tex]\tau[/tex])[tex]\delta[/tex]Ekl([tex]\tau[/tex])
where Gijkl(t-[tex]\tau[/tex]) is the relaxation function.
The Attempt at a Solution
Can someone please help me on how to start this question because i have no idea how to do it.
For (2), do i have to rearrange the equation above to find the relaxation function??.
Thank you