The Node 14 is the center of the beam. I'm applying a load of 100 N on the z-axis.
When I'm looking for the Internal Forces for this Element, as you explained to me I have to look in the sub Element.
I did it but the problem is :
if I take the Internal Forces from the member 13 the Internal Force F3 =-50N.
if I take the Internal Forces from the member 14 the Internal Force F3 =50N.
But according to the beam theory the I-F F3 has to be set to 0 for my node 14.
So taking the Internal Forces from Member is false for me.
What should I've to do ?
Because I'm doing a post-processor to visualize stress and I'm blocked with this. When the computer is going to pick the Node 14 he picks also the internal Forces of Member 13 or 14.
Hi Salim,
The internal shear force distribution in a 3-point bending case is as you
described, opposite value on two sides of the load point, see the wiki:
https://commons.wikimedia.org/wiki/File:SimpSuppBeamPointLoad.svg
You need to look into the problem and decide which quantity is of interest.
Qi
On Fri, Nov 17, 2017 at 4:01 AM, Salim Chaibi @ cdmHUB - The Composites HUB
<support@cdmhub.org> wrote:
---- Emailed forum response from aaron.qi.wang@gmail.com
Okay.
So for my node in the middle of the beam where I'm applying a Force.
I have to put the internal Shear Force F3. I have to put even the Intenal shear Force of the Left Member or Internal shear Force of the right member but i can't put 0 ?
Salim Chaibi @ on — Edited @ on
I have a problem with a 3 pts bending analysis.
I have 29 nodes with 28 Elements.
The Node 14 is the center of the beam. I'm applying a load of 100 N on the z-axis.
When I'm looking for the Internal Forces for this Element, as you explained to me I have to look in the sub Element.
I did it but the problem is :
if I take the Internal Forces from the member 13 the Internal Force F3 =-50N.
if I take the Internal Forces from the member 14 the Internal Force F3 =50N.
But according to the beam theory the I-F F3 has to be set to 0 for my node 14.
So taking the Internal Forces from Member is false for me.
What should I've to do ?
Because I'm doing a post-processor to visualize stress and I'm blocked with this. When the computer is going to pick the Node 14 he picks also the internal Forces of Member 13 or 14.
I join my gebt file <.dat> and <.out>
Thank you
Gebt-file.zip
560 KBClick to download
Qi Wang @ on — Edited @ on
Wenbin Yu @ on — Edited @ on
Salim Chaibi @ on
Okay.
So for my node in the middle of the beam where I'm applying a Force.
I have to put the internal Shear Force F3. I have to put even the Intenal shear Force of the Left Member or Internal shear Force of the right member but i can't put 0 ?