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Recent content by y32k
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Enforced diplacement problems
I got the enforced displacements to work. I don't know what happened, all I did was create the same model with a new file instead of overwriting an old one, but that works now. I didn't know rotations wouldn't work; that's what I started with. I was just getting null results, no errors or... -
Enforced diplacement problems
I'm doing a static analysis. I'm using SPCD as you indicated. I did manage to find an example on the Noran website similar to what I'm trying to do. Their model works fine, and I can't find any differences between the two, except for the material properties. I only have the modulus and nu... -
Enforced diplacement problems
I'm trying to load a model using enforced displacement and can't get it to work. I've tried using solids and shells with no results. It works fine with beam elements. I've tried both displacement and rotations, loaded on the geometry and nodes, but neither generate any results. I must be missing... -
nonuniform distributed load over beam elements
I found the divide beams command, but it doesn't split the load. It splits the beam and gives one element all the load and none on the other. Another problem that I just discovered is that when I apply a distributed load in the Global Z direction, Femap applies it in the Element Y direction... -
nonuniform distributed load over beam elements
I'm using Femap v9.3 and NeiNastran v9.1. I thought there was a way to create loads based on coordinates, but I can't figure it out. The Femap help on that subject isn't very clear. I haven't been able to find the Element Update - Divide beams function either. Is that a Femap command? -
nonuniform distributed load over beam elements
I'm trying to create a linear, nonuniform distributed load over multiple beam elements. When I select multiple elements and a apply the load, I get a saw-tooth pattern. I don't want to have to load each beam individually using the appropriate value based on interpolation. There must be a way to... -
Problem with ridgid elements
Spirit, Thanks for the clarification, I wasn't fully grasping the definition. The rotaional constraints did exactly what I was looking for. Thanks -
Problem with ridgid elements
I'm having a problem with ridged elements that don't seem to be working they way they should be - they are not transferring displacements 100%. That is to say, the dependant nodes are not displacing as much as the dependant nodes. Here is a simple model: I have a solid cube hex meshed. The... -
Surface has no facets
I've imported some 2D geometry from AutoCAD and I want to turn the lines into surfaces. When I extrude a line to form a surface, it creats the surface but when I go to select it for further manipultaion I get a message saying that it has no facets. I've tried deleting the imported line and... -
Singularity detected
I've been trying to do that since I read the thread above (thanks 40818). I can't get that to work either. The error I get is the ID for SDAMP is out of range. It currently is set to 0. I did make a simple model and ran a normal modes analysis on it, and SDAMP is nowhere in the input file. I... -
Singularity detected
I made a model using plate and beam elements. When I go to analyze it, one of two errors comes up. Either a singularity or a non-positive definite is detected. These occur at random locations throughout the model. -
Singularity detected
Just about everytime I run a model I create, it detects a singularity or a non-positive definite. I've tried the suggestions given by the respective help topic but they never work. The only way I've found to solve the issue is to find that node and remesh around it. I usually do that to about 10...
