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how to change the load value and load direction
Posted: Sat Jun 13, 2020 9:03 am
by Stephen3
Hi there,
Im at a loss, so wondering if anyone could point me in the right direction, As per title, I want to change the load direction.
Let me explain. I ran through the supplied example changed parameters and ran different tests ..Changes the load directions without any problems. So I ran A simple test, I used "sketcher" , constrained and extruded a tube 12x10x300mm then constrained one end, and tried to hang a 10kg weight of the other. everything went well I can run through the example , meshing constraints etc but I cannot change the load direction to 90 degrees from normal. The supplied cantilever beam example works ok but my tube doesn't ,, Have I drawn something wrong? any Ideas ?
Thanks in advance and thank you for all the hard work
Kind Regards Stephen
Re: how to change the load value and load direction
Posted: Sat Jun 13, 2020 12:15 pm
by bernd
Hi and welcomee to Freecad FEM. Have you read
https://forum.freecadweb.org/viewtopic.php?f=18&t=12212 ?
Would you post the file you have problems with? Do not delete the mesh object but clear it!
Re: how to change the load value and load direction
Posted: Sat Jun 13, 2020 2:44 pm
by Stephen3
Hi there, all ok with a square pipe lots of fillets, the load direction changes as per Wiki, But with a round shape , bar or pipe, or spring, I dont know how to go about changing the direction.
Sorry its saying the file is too large , even is I compress, I attach a photo , just to give an idea ..
- Spring.png (133.05 KiB) Viewed 2659 times
Sorry for being trouble !
Kind Regards Stephen
Re: how to change the load value and load direction
Posted: Sun Jun 14, 2020 6:48 am
by bernd
you need to clear the mesh to make the file size smaller.
If your geometry does not have an edge in the direction you wish to have your load, just draw a edge and use this. This could be done with draft or part primitieves.
Re: how to change the load value and load direction
Posted: Mon Jun 15, 2020 7:54 pm
by Jee-Bee
Maybe it would be some time to archive this with Part Design(axis planes etc) / Sketcher objects too.
Re: how to change the load value and load direction
Posted: Sat Jun 27, 2020 7:24 am
by bernd
have you tested if it works or not?
Re: how to change the load value and load direction
Posted: Thu Jul 09, 2020 9:46 am
by Jee-Bee
I tested it with my latest installed version and no the direction option of at least force can't handle partdesign planes nor partdesign axis.
Adding a sketch works. but that's most intesting with PD geometry. when using imported geometry for every iteration all sketches have to be created again.
Code: Select all
OS: Windows 7 SP 1 (6.1)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.21514 (Git)
Build type: Release
Branch: master
Hash: 89ddab33f692a9bd739171689f9ab0eb58d64b35
Python version: 3.6.8
Qt version: 5.12.1
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: Dutch/Netherlands (nl_NL)
If needed i can create a bug so at least is isn't forgotten?
Re: how to change the load value and load direction
Posted: Thu Jul 09, 2020 10:16 am
by bernd
Jee-Bee wrote: ↑Thu Jul 09, 2020 9:46 am
If needed i can create a bug so at least is isn't forgotten?
Since I will not do anything in this regard soon, it really makes sense to fill a bug report. Do not assigne it to me.
Re: how to change the load value and load direction
Posted: Thu Jul 09, 2020 1:12 pm
by Jee-Bee