Here are some FreeCAD project files: https://ufile.io/x4jdq Doesn't this mean that the shaft could hold almost 5 times more force? Hi blubee, thanks for the linux-files, but I am working with Windows 10. Please have a look at the calculation, done with smath-studio, see https://en.smath.info/view/S...

Can you explain what formula are you using to calculate the max shear stress for the steel S235? when you did 235/sqrt(3) to get 136MPa is that because you are familiar with S235 steal? Couldn't I have started with the 490MPa and worked from that? Hi blubee, green colour: yes blue colour: divide yo...

I have a real world problem that I am trying to solve for. I have some medium carbon steal that's has a yield strength of 490 MPa I have a 15HP 1200RPM motor with a reducer that brings it to 85RPM so it's about 926ft-lbs or 1250Nm of torque. I'd like to see the maximum force that the shaft and disk...

Hello blubee, I had a quick look at your files. Some hints: I was interested in the first 2 eigenfrequencies as shown above, so I have set number of modes in ccx to 6. In modal-analysis you must double the number of eigenfrequencies you are interested in. For example, if you want to get the first 6...

Hello blubee, according to your thread https://forum.freecadweb.org/viewtopic.php?f=3&t=23992 In the thread above we did a static calculation of your model. But I think its a dynamic problem. If the rotation starts and goes up to high rpm, the shaft/disk begins to vibrate (resonance). Second pr...

Here's a ccx file applying axial rotation forces on this shaft. I would like to understand at what point does the material elastically fail. Here's a link to the file with results: https://filetea.me/n3wScs9a4cGScGwRdN8SOlrHA When I check on the results, then show the displacement, on my screen a fa...

it gets really strange results The funny part of this analysis is, you caused millions of floating point operations, done by ccx, just to obtain this: Shear stress rod under torque.png :shock: Well that doesn't look good on me, but i am learning. I'm a programmer first, fell into physics sorta out ...

Dear blubee, I am not sure if applying rotational load does work at the moment... Please see also https://forum.freecadweb.org/viewtopic.php?f=18&t=23778 there you find also some further information in the listed links. But you can simply create a test case. Regarding the size of the model you ...

I am trying to model the force of a motor on a central pipe [hexagon and cylindrical] along with some disks. I would like to see how many pascals it would take for any of the parts to reach failure. I am using standard medium carbon steel, I've attached two files they both have a gmsh with a max siz...

2) Is there an official or somewhat tested version of software packages being tested by the FreeCAD version on github? We use these libs on the Daily PPA , For 17.04 these are all the standard 17.04 libs except OCCT7.1 which is also on the PPA. if I update to VTK 7.1.0 I compile VTK but then FreeCA...