giuliano.cicolini
2009-04-21, 10:19
Dear Jorgen,
I have to model the behaviour of a TPU, that owns a non-linear hyperviscoelastic behaviour. I found the mathematical constitutive model in a lot of articles, such as that one by LM Yang "A visco-hyperelastic approach to modelling the constitutive behaviour of rubber". In the comparison between experimental and numerical results, there is good fitting in the data. However, in Ansys Ls-Dyna this model is described by the "viscous foam" which requires other parameters. My problem is how can I mathematically relate this two different models to characterise the material? Do you know which article or handbook could help me?
Thank you so much,
Giuliano
I have to model the behaviour of a TPU, that owns a non-linear hyperviscoelastic behaviour. I found the mathematical constitutive model in a lot of articles, such as that one by LM Yang "A visco-hyperelastic approach to modelling the constitutive behaviour of rubber". In the comparison between experimental and numerical results, there is good fitting in the data. However, in Ansys Ls-Dyna this model is described by the "viscous foam" which requires other parameters. My problem is how can I mathematically relate this two different models to characterise the material? Do you know which article or handbook could help me?
Thank you so much,
Giuliano