Yes, this is absolutely true.
S4R - nodes have rotational d.o.f.
SC8R - nodes have displacement d.o.f. only.
However, I don't think this explains the differences I am observing, since my mesh is significantly small (large number of elements) in the areas where deformation is expected to occur.
If I am understanding your issue correctly, I think you should try to use a continuum shell element (SC8R/SC6R). These are shell elements, which are defined similarly to solids/bricks. Give it a try...
Hello everyone,
I have tried to find some answers to this particular question in the theory manual/user manual, but I haven't been successful.
My issue lies with the modelling of a simple cold-formed steel structure, i.e. I used shell finite elements since the thickness is considerably smaller...
Dear all,
I have been looking for some information regarding the inclusion of hardening in cold-formed steel beams. First of all, I have defined my material as follows:
*MATERIAL, NAME=steel_corner
*DENSITY
7850e-9
*ELASTIC, TYPE=ISOTROPIC
202870, 0.3
*PLASTIC, HARDENING=KINEMATIC
220, 0...
Dear sdebock,
Firstly, thanks for the answer. Yes, I have tried to use implicit integration. However, I have previously concluded that implicit has significant convergence problems for my particular problem and that is the reason I have been using explicit in the first place. I was hoping to...
Hello everyone,
I am hoping someone out there might have some insight for me regarding this subject.
First of all, I am fully aware that the standard subroutines, such as SIGINI, are restricted in abaqus explicit. However, i figured it might be possible to run an initial stress state using the...
Regarding my previous question, I realize that my question was not too clear. So, let me try again...
I have defined a rotary inertia element set (1 ROTARYI element, 1 node) with *ROTARY INERTIA. Now I want to associate this element with a rigid plate reference node, which is a well defined...
Hi Sutham,
I have used both Static General and Dynamic Explicit to model the same event in ABAQUS. In my particular case, I have decided that using explicit provides a much better approach to the results, since I wanted to model time dependent events, even though the time scale is rather long...
Hi everyone,
I have got the following problem I require some assistance with: suppose you got a rigid body (for instance,a rigid plate), which is globally restrained using boundary conditions on the reference node - every displacement and rotation is restrained, except for the vertical...
Hi everyone,
I have got the following problem I require some assistance with: suppose you got a rigid body (for instance,a rigid plate), which is globally restrained using boundary conditions on the reference node - every displacement and rotation is restrained, except for the vertical...
Dear ABAQUS users,
I have been trying to implement a SIGINI subroutine to include initial stresses in a dynamic analysis.
Question #1: I have used the following syntax to perform the analysis in the command line:
abaqus double job=[jobname] user=[subroutine file name] interactive
However, I...
Hello Fhd.
Let me see if I can help you out here.
If I understand correctly, you want to add a second linear branch to your material constitutive relation, which would correspond to hardening.
I think the answer is to simply add a second line to the *Plastic command, where you introduce the...
I think the following additional information might be relevant:
shell finite element model - element S4R.
element thickness = 4.72mm
smallest element facet ~= 1mm (some very small elements are used to model a rounded corner)
could this be the problem ? The fact that the element size is...
I got the following warning on .sta file from a model I am running. It uses the general contact algorithm and this formulation has worked successfully on different cases where only some of the geometric dimensions are changed.
***WARNING: In step 1, some facet thicknesses for general contact...
