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Varification of viscoelastic beam results by comsol multiphysics 5
Posted 28 mar 2015, 02:48 GMT-4 0 Replies
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Just to validate a simple model ( Viscoelastic beam in uni axial tension) , I chose generalized maxwell viscoelastic model with one branch only , i.e the model converts into linear solid model with one maxwell unit(young modulus E1 and time constant tau) in parallel with a spring ( young mod E2).
In the case of constant stress(p) as input the analytic formula for creep function 1/E2-[E1/{E2(E1+E2)}]*EXP(-t/tau2) is available . But when i compare the comsol solution with this , there is a mismatch .
As file size was large I attached my model file at ( ftp://ftp.comsol.com/incoming/) Visco_beam can anybody help me out in dealing with this?
Thanks.
Hello Gaurav Singh
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