Hello and a good day. I need a help regaring the theoretical calculation of my design which is not same as von misses stress result. Tq
You will have to give us considerably more information for anyone to be able to help you.
Recommend starting with something simple that you can calculate and post it here with both the calcs and analysis setup along with a description of the issue.
Also, look at the validation examples In the software to see that it had been checked. Most times the issue is setup or interpretation. For example using stress at a singularity as a measuring point.
The plate dimension
Length = 200mm
Thickness = 5mm
The force given on the plate surface area is 49N
With A extruded cut of hole with 1mm depth and 25mm of diameter which I had defined as fixed geometry.
In this case I'd try to calculate by hand calculation but the result are not same as in the von misses result in the solidwork.
1. You are comparing a 2d problem to a 3d problem. Is that a fair comparison? You may want to consider making the problems more consistent.
2. You are comparing results at what looks like a singularity to your hand calc. You may want to look at our article on blog.hawkridgesys.com about mesh convergence.
3. From a setup perspective, use a split line instead of a cut for your restraint.
4. I don't see any documentation of your assumptions for your calcs or your simulation. This may help you understand the differences,
I'm having a hard time understanding what you're trying to model and what you're calculating by hand, but from what I understand:
You have a plate you a uniform surface load on top and the plate is supported by a circular rod at the center. If so, then here are my thoughts:
For your FEM:
For your hand calculations:
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