Hi!
I have a problem with a model defined with three steps (two general steps and a Step3 define as a linear perturbation procedure for Eigenvalues and Eigenmodes extraction.
The model converges OK during the general steps procedure (base state definition) but in step 3 ABAQUS crashes with the...
Hi!
I think it is not possible to do in ABAQUS what you are asking. By another hand you can use density segmentation softwares like MIMICS or 3DDoctor. This softwares are originally used for the reconstruction of biomechanical models obtained with image slices generated from CT scan or MR scan...
Hi Janus!
Try to do the following:
Impose Boundary conditions in the nodes placed at the revolution axis of your deformable body (use the edge selection option). If you are imposing the displacement in the direction U3, define U2=U1=0 at that nodes.
Psantunes
Yes harry!
You are rigth!! I know that I can use the *Static, stabilize, to improve the behaviour of instable models (loss of stifness for instance). If this approach (refinement) don't work I will use the static stabilization procedure!
Thanks
Hi mrgoldthorpe!
Thanks for your answer!
No! I'm not able to complete the analysis! I know that the problem is located in the rings that are placed above the bolt healds. These rings are made from steel and they are not flat rings. They have a small concavity and because of that they change...
I 666!
First of all, I must know if you are using the frictionless tangencial behaviour between the bolts heads and your upper part?
First , try to use in the *NO SEPARATION in the normal interaction behaviour definition in the bolt heads contact properties!
The second option you have is to...
Hi!
I'm running a model that cointais plastic data in the definitionf of the steel mechanical behavior. The plastic region is defined using a hardening modulus (classical plasticity theory), but I obtain several messages of excessive distortion followed by negative eigenvalue messages when the...
Hi!!
I bougth a new computer with 2 processors with 64 bits. What i don´t understand are the models that run easily in a 32 bits plataform don´t run in my new computer.
The Abaqus report this message:
" INCREMENT 1 STARTS. ATTEMPT NUMBER 1, TIME INCREMENT 1.000E-03
***ERROR: Issue...
Hi!!
I,m modeling a gasket model with 16 bolt loads. The gasket has a thickness of 0.8mm with hyperelastic behaviour defined for a second order reduced polynomial. The elements that discretize the gasket are hexaedral (linear, reduced integration). Since the material is not near...
Hi Svufer!
As you must know the plasticity is a incompressible effect (no change of volume in the material during the deformation). If you are usig the implicit abaqus algorithm (Standard), try to use hybrid formulation in your elements. This kind of formulation includes a independent...
Hi!
I'm trying to simulate a model of a gasket(hyperelastic) and the aluminium (elastic) cover. The model have 4 bolt loads and 12 contact pairs. I,m running this problem with abaqus standard procedure.
I have no problem in estabilishing contact with all the parts, but in a step that increases...
Hello!
I'm doing a standard contact simulation divided in two steps, beetween a 3D discret rigid surface and a deformable hyperelastic 3D model. The first step corresponds to the approach and in the second step I Input a vertical force and no boundary conditions for the discrete surface. The...
Hello!
I am doing some modeling with ABAQUS CAE and I would like to get contour lines of displacements in cylindrical coordinates. How can I get this kind of results? I have introduced a CSYS Datum cylindrical system axis in the property module but I can't obtain the displacement results in a...
Hello!
I need to adjust a new material (rubberlike) for a abaqus analysis. I already have the compressive data, but now I want to introduce the data for a volumetric test (compression test) in order to calculate the "D" factor. I want to know if I have to introduce the values...
