Hi! But what about degrees of freedom and redundancies? Because I'm quite sure that your cylindrical connection added 1 constraint to the model. You have 3 bodies (crene, piston outside and piston cilinder) so we have 6x3=18 dof. You've removed 5 dof with the pin over the crane, 5 dof with the pin over the piston esternal piston (to link it to the frame) and 4 dof with the cylinder internally the piston assembly. Total: 5+5+4 =14 If you add a cylinder you add 4 degrees of constraints and you reach 18 dof, so you could''t have the possibility to move because of you don't have the 1 dof you need. If you make a DOF and a Redoundancies Measure you can see it. To have the 1 dof you may use Bearing constraint instead of Cylindricl to link the piston's head to the crane. This is theorically... A system with no zero redundancies may gives wrong dynamic results. This is an area that maybe will be examined in depth.
Hi, thanks for your idea....I will try to share a drawings of simple models and assemblies. I will try to create it during next week week. I will let you know in this chat. Have a nice weekend. Vladimir
@@4kside I also don't about that I search how do create bom table with length. I saw that in ptc creo community it's in there about framework stock length and cut list
Very useful as always Vladimir.
Have a great day.
Many thanks! Enjoy your day also. Bye,Vladimir
Hi!
But what about degrees of freedom and redundancies?
Because I'm quite sure that your cylindrical connection added 1 constraint to the model.
You have 3 bodies (crene, piston outside and piston cilinder) so we have 6x3=18 dof.
You've removed 5 dof with the pin over the crane, 5 dof with the pin over the piston esternal piston (to link it to the frame) and 4 dof with the cylinder internally the piston assembly.
Total: 5+5+4 =14
If you add a cylinder you add 4 degrees of constraints and you reach 18 dof, so you could''t have the possibility to move because of you don't have the 1 dof you need.
If you make a DOF and a Redoundancies Measure you can see it.
To have the 1 dof you may use Bearing constraint instead of Cylindricl to link the piston's head to the crane.
This is theorically...
A system with no zero redundancies may gives wrong dynamic results.
This is an area that maybe will be examined in depth.
Hi Vladimir,
Is there a way that you share the parts/assembly model to practice at home?
Thanks in advance
Hi, thanks for your idea....I will try to share a drawings of simple models and assemblies.
I will try to create it during next week week.
I will let you know in this chat.
Have a nice weekend. Vladimir
Plz make a video about stock length table and cut list
Thank you for your proposal. Can you help me please in which part the stock length table is belong to?
@@4kside I also don't about that I search how do create bom table with length. I saw that in ptc creo community it's in there about framework stock length and cut list
Ok, I will try to show you how you can create custom parameter and custom table and system will calculate selected parameter.
Stay tuned, Vladimir