Re: Non-convergence due to "time increment is less than minimum specified"
| Newsgroups | gmane.comp.mathematics.abaqus.user |
|---|---|
| Message-ID | <20190115122856.67e15df6@hopper> |
have a look at this: https://arxiv.org/pdf/1811.05753 On 12 Jan 2019 19:42:09 +0000 "[email protected] [Abaqus]" <[email protected]> wrote: > Dear friends > > > I am back to using Abaqus after a very long break from it. I am using Standard now. > > > I am running a relatively simple problem where I am applying a pressure load on one surface of an almost circular plate. The plate consists of several layers of different materials but they have common nodes so there are no contact issues. The plate is connected to a ring around the periphery of the plate through constraints at certain points which are primarily bolt holes. The bolts have NOT been modeled. Instead, constraints have been created using a reference node at the center of the bolt which is connected to all nodes in the bolt hole through a tied constraint. There are enforced displacements all around the periphery of the ring. > > > I have used solid elements (C3D6 and C3D8R) only. > > > Abaqus is able to apply about 50 % of the pressure load and stops with a time increment error. > > > The residual force and moment are very small in the last attempted increment. Understandable, given the small time increment. > > > Any help in getting the analysis to converge will be great! > > > Thank you > Guru > > -- Priv.-Doz. Dr. Martin Bäker Institut für Werkstoffe Technische Universität Braunschweig Langer Kamp 8 38106 Braunschweig Germany Tel.: 00-49-531-391-3065 Fax 00-49-531-391-3058 e-mail <[email protected]> http://www.tu-braunschweig.de/ifw/institut/mitarbeiter/baeker http://www.scienceblogs.de/hier-wohnen-drachen