Question about material model in svFSI
Posted: Tue Jul 16, 2024 12:48 pm
Hello,
The material model described in Gasser et al (2006) states that the collagen fibers do not support any compression and would buckle. Therefore, the anisotropic part of the HGO model only contributes to the strain energy if the strain in the direction of a_0_i is positive. https://royalsocietypublishing.org/doi/ ... .2005.0073
I was wondering if the HGO model in svFSI handles this behavior, for example I have read in some places that a Heaviside-type function is used to turn off the effect of fibers during compression (https://polymerfem.com/holzapfel-gasser-ogden-model/). I couldn't gauge much by the code here: https://github.com/SimVascular/svFSI/bl ... ATMODELS.f
Thanks,
Aditya
The material model described in Gasser et al (2006) states that the collagen fibers do not support any compression and would buckle. Therefore, the anisotropic part of the HGO model only contributes to the strain energy if the strain in the direction of a_0_i is positive. https://royalsocietypublishing.org/doi/ ... .2005.0073
I was wondering if the HGO model in svFSI handles this behavior, for example I have read in some places that a Heaviside-type function is used to turn off the effect of fibers during compression (https://polymerfem.com/holzapfel-gasser-ogden-model/). I couldn't gauge much by the code here: https://github.com/SimVascular/svFSI/bl ... ATMODELS.f
Thanks,
Aditya