Hello,
I would like to investigate the effect of viscosity on my simulations (cylinder with prescribed harmonic rotation ~50Hz along its main axis). To this end, I am comparing two types of material:
(1) Elastic - neo-Hookean (Young = 6000 Pa, Poisson = 0.45 and density = 1100 kg/m3).
(2) Viscoelastic (g1 = 0.67 and tau1 = 0.1s) with the same neo-Hookean law as in (1).
Simulations using configuration (2) lead to a system which seems much stiffer than when I use configuration (1). I repeated the simulation in configuration (2) but this time I considered a relaxation parameter g1 = 0, which was supposed to cancel the viscous effect; however, the results were still different than for configuration (1) (much stiffer).
Could you please explain why? Is it wrong to suppose that g1 = 0 would cancel the viscous effect?
Thank you very much for your help!
I would like to investigate the effect of viscosity on my simulations (cylinder with prescribed harmonic rotation ~50Hz along its main axis). To this end, I am comparing two types of material:
(1) Elastic - neo-Hookean (Young = 6000 Pa, Poisson = 0.45 and density = 1100 kg/m3).
(2) Viscoelastic (g1 = 0.67 and tau1 = 0.1s) with the same neo-Hookean law as in (1).
Simulations using configuration (2) lead to a system which seems much stiffer than when I use configuration (1). I repeated the simulation in configuration (2) but this time I considered a relaxation parameter g1 = 0, which was supposed to cancel the viscous effect; however, the results were still different than for configuration (1) (much stiffer).
Could you please explain why? Is it wrong to suppose that g1 = 0 would cancel the viscous effect?
Thank you very much for your help!
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