[deal.II] Re: Elasticity Preconditioner

2021-09-24 Thread MichaƂ Wichrowski
The simple answer is multigrid. But depending on how the problem looks like it will differ. If it is far from being incompressible standard MG will be fine. Trilinos AMG should also work, just take look at its settings (there is an option to specify that you are dealing with vector problem). Bes

[deal.II] Re: Elasticity

2016-06-14 Thread Denis Davydov
It appears that you are solving small strain non-linear elasticity. Then you need to study step-44 and linearize your problem. Regards, Denis. On Tuesday, June 14, 2016 at 5:07:05 PM UTC+2, benhour@gmail.com wrote: > > Dear all, > Thanks very much for your response and help. If I can make it

[deal.II] Re: Elasticity

2016-06-14 Thread benhour . amirian66
Dear all, Thanks very much for your response and help. If I can make it simple, in my equation, the lame constants in stress-strain tensor are related to another function that changes with solution vector. For instance, consider a situation in which you have a constant rank-2 tensor for initial

[deal.II] Re: Elasticity

2016-06-13 Thread Jean-Paul Pelteret
Hi Benhour, As Denis has said, in order to help you it would definitely be useful for you to provide a better description of what you're trying to accomplish. Also, what have you tried thus far? Why/how has it not worked? In the mean time, the following paper provides a brief discussion on the

[deal.II] Re: Elasticity

2016-06-13 Thread Denis Davydov
Hi Benhour, I am afraid that not many people would be able to answer such a general question, that does not look to be specific to deal.II per se. Just a general advise, i would suggest you to first research on what you are trying to implement in deal.II, which system of equations you solve (if