ULiege - Aerospace & Mechanical Engineering http://metafor.ltas.ulg.ac.be/dokuwiki/ 2026-05-16T04:24:21+00:00 http://metafor.ltas.ulg.ac.be/dokuwiki/ http://metafor.ltas.ulg.ac.be/dokuwiki/_media/logo.png text/html 2024-07-16T08:15:59+00:00 Anonymous (anonymous@undisclosed.example.com) http://metafor.ltas.ulg.ac.be/dokuwiki/doc/user/integration/general/mim_tim?rev=1721117759&do=diff Managing N.-R. Iterations Mechanical iterations parameters are imposed by functions associated to metafor.getMechanicalIterationManager(), when thermal iterations parameters are imposed by functions associated to metafor.getThermalIterationManager()$Residual$$$Rmin = \frac{||FreeExternalForces|| + ||CstrInternalForces||+||CstrInertialForces||}{nreac} $$$$ Rmin < limitNormFactor $$$Rmin$$$ Rmin = limitNormFactor $$$$Residual = \frac{||FreeResidual||}{ndofs*Rmin}$$$ndofs$$nreac$$$Rmin = \frac{\… text/html 2017-10-25T07:59:50+00:00 Anonymous (anonymous@undisclosed.example.com) http://metafor.ltas.ulg.ac.be/dokuwiki/doc/user/integration/general/parameters?rev=1508918390&do=diff Global Parameters [REMOVED] Parameters are defined using prefixed codes MDE (integer) and MDR (real). metafor.setIntegerData(param,value) metafor.setRealData(param,value) Integer parameters All integer parameters used in Metafor are listed here. These parameters are remains of the old $\alpha_m$$\alpha_m=0$$\alpha_f$$\alpha_f = 0$$\beta_0$$\gamma_0$ text/html 2026-04-09T14:31:45+00:00 Anonymous (anonymous@undisclosed.example.com) http://metafor.ltas.ulg.ac.be/dokuwiki/doc/user/integration/general/solvers?rev=1775745105&do=diff Linear solvers Introduction Since 20/07/2005, Metafor includes several linear solvers to solve the system at each iteration when implicitly integrating motion equations. Skyline is the traditional solver, but the direct solver Pardiso and iterative sparse solver (ISS), a GMRES implemented in the text/html 2019-06-17T12:13:06+00:00 Anonymous (anonymous@undisclosed.example.com) http://metafor.ltas.ulg.ac.be/dokuwiki/doc/user/integration/general/stopcriterion?rev=1560773586&do=diff StopCriterion Introduction The stop criterion allows to stop a computation when a given criterion becomes greater than a given value. It is useful to avoid consuming CPU time when a computation has no meaning anymore, or to chain operations (remeshing, chained operation based on a criterion, text/html 2020-12-28T09:55:17+00:00 Anonymous (anonymous@undisclosed.example.com) http://metafor.ltas.ulg.ac.be/dokuwiki/doc/user/integration/general/time_step?rev=1609149317&do=diff Managing Time Steps Archiving manager General Points Archiving is done with metafor.getTimeStepManager(). An initial time and time step is set using setInitialTime(), then a series of subsequent steps are set using setNextTime(). Then number of archives between two time steps is given as argument to $\Delta t$$ \Delta t = \gamma_s \Delta t_{crit} $$\Delta t_{crit}$$\gamma_s$