Francesc Levrero-Florencio writes:
> Hi Jed,
>
> Thanks for the answer.
>
> We do have a monolithic arc-length implementation based on the TS/SNES logic,
> but we are also exploring having a custom SNESSHELL because the arc-length
> logic is substantially more complex than that of traditional
p, as each
linear solve is quite expensive for large problems.
Regards,
Francesc.
From: Jed Brown
Sent: 08 November 2022 17:09
To: Francesc Levrero-Florencio ;
petsc-users@mcs.anl.gov
Subject: Re: [petsc-users] TSBEULER vs TSPSEUDO
[External Sender]
First, I b
First, I believe arc-length continuation is the right approach in this problem
domain. I have a branch starting an implementation, but need to revisit it in
light of some feedback (and time has been too short lately).
My group's nonlinear mechanics solver uses TSBEULER because it's convenient
Hi PETSc people,
We are running highly nonlinear quasi-static (steady-state) mechanical finite
element problems with PETSc, currently using TSBEULER and the basic time adapt
scheme.
What we do in order to tackle these nonlinear problems is to parametrize the
applied loads with the time in the
