Re: [deal.II] Macro periodic boundary condition for a elasticity equation

2022-11-15 Thread Masoud Ahmadi
Hi Lukas and Jean-Paul, I have the same exact question. Any further achievment with the issue? Best regards, Masoud On Monday, 10 February 2020 at 23:59:35 UTC Lukas Schöller wrote: > Hi Jean-Paul, > > thanks for you detailed answer. You described excatly what I want to do. > And I guess wha

Re: [deal.II] Macro periodic boundary condition for a elasticity equation

2020-02-10 Thread 'Lukas Schöller' via deal . II User Group
Hi Jean-Paul, thanks for you detailed answer. You described excatly what I want to do. And I guess what is working for a finite deformation framework, works also for the case of small strains. The main goal for me is still is to apply a prescribed marcoscopic stress tensor. But it is always be

Re: [deal.II] Macro periodic boundary condition for a elasticity equation

2020-02-10 Thread Jean-Paul Pelteret
Hi Lukas, If I’ve interpreted your emails correctly, you’ve mentioned two distinct things here, namely (1) the imposition of periodic displacement fluctuation field (thereby, in essence, prescribing a macroscopic average deformation gradient, with stress unknown) or (2) the imposition of a macr

[deal.II] Macro periodic boundary condition for a elasticity equation

2020-02-07 Thread 'Lukas Schöller' via deal . II User Group
Hi, I'm trying to implement a periodic boundary condition for a basic elastic equation (almost like step 8, but with the general 4th order stiffness tensor and neuman bcs). The common way to enforce periodicity in deali.II with GridTools::collect_periodic_faces, or DoFTools::make_periodicity_c