Hello Henrik,
Thank you, this clarifies the issue a lot. However, I'm confused when it comes to eps0. The final radius still depends on eps0 if I either implement it as:
solid.eil11 = (eps0-Y/R) + 1/2(eps0-Y/R)^2
(which should be the correct form according to Green-Lagrange)
or as
solid.eil11 = eps0 - Y/R + 1/2(-Y/R)^2
This doesn't make sense to me, as a constant strain offset should result in a simple elongation of the structure? Does this mean that the theoretical bending strain is already wrong or can it not so simply be modeled in Comsol?
Best Regards,
Silvan
PS:
The strain in my first post and the model should have been solid.eil11 = -Y/R so R is equal to the Radius on the outside of the structure.
Thank you, this clarifies the issue a lot. However, I'm confused when it comes to eps0. The final radius still depends on eps0 if I either implement it as:
solid.eil11 = (eps0-Y/R) + 1/2(eps0-Y/R)^2
(which should be the correct form according to Green-Lagrange)
or as
solid.eil11 = eps0 - Y/R + 1/2(-Y/R)^2
This doesn't make sense to me, as a constant strain offset should result in a simple elongation of the structure? Does this mean that the theoretical bending strain is already wrong or can it not so simply be modeled in Comsol?
Best Regards,
Silvan
PS:
The strain in my first post and the model should have been solid.eil11 = -Y/R so R is equal to the Radius on the outside of the structure.