Extract Stress at Node from Raw Output
Extract Stress at Node from Raw Output
(OP)
By default, most solvers seem to output element stresses and not stress at a node. In general, if I want to get a stress at a node, I would do it in the post processor.
But for what I am doing, I will not be using a post processor, but rather just reading the output into Excel. What would be some methods to extract the stress at a given point? Since it is a high stress gradient area (near a cutout), it has to be very accurate to be meaningful. In other words, I can't just use the direct element stresses.
But for what I am doing, I will not be using a post processor, but rather just reading the output into Excel. What would be some methods to extract the stress at a given point? Since it is a high stress gradient area (near a cutout), it has to be very accurate to be meaningful. In other words, I can't just use the direct element stresses.





RE: Extract Stress at Node from Raw Output
Of course the question of whether or not the nodal stresses are accurate is entirely dependent on whether or not your solution is grid converged...
RE: Extract Stress at Node from Raw Output
For this project, I will only be running Calculix, a solver similar to ABAQUS. The pre processing will be done in Excel and the raw data is read back into Excel. Unfortunately, the post processor is not an option.
I am looking for some ideas I suppose. Something I thought might work would be to make a small element in the area of interest such that it could be approximated as a point. But that could get tricky as well for several reasons. Any other ideas though?
Brian
www.espcomposites.com
RE: Extract Stress at Node from Raw Output
RE: Extract Stress at Node from Raw Output
I will try to exhaust all of the simple approaches and see what I can come up with. If nothing works, then my backup plan would be to request a feature like this from the developer. He has said he will work with me on it, but I don't want to get into that just yet.
Brian
www.espcomposites.com
RE: Extract Stress at Node from Raw Output
or you could look into the F06 output file ...
this assumes you're running a reasonable FEA code (NASTRAN, ANSYS, ...) and not something "dumbed down" for designers
RE: Extract Stress at Node from Raw Output
www.Roshaz.com
RE: Extract Stress at Node from Raw Output
Brian
www.espcomposites.com