BjornF
Mechanical
- Mar 18, 2010
- 9
Hello,
New to the site and relatively new to Algor. I am currently trying to model a part of a cutting machine with several contact surfaces and pretension of bolts to keep the parts together. However I wanted to start with a simple model, so I used the CAD (IronCad) model I have to mesh, duplicate the lines and create a 1-element thick model (for some reason I was not able to choose 2D elements when I had extracted all the lines?).
What I am aiming to do is really to first press the pieces together (using a prescribed displacement), then applying the pretension as a nodal force and thereafter applying the actual cutting forces. I am having a hard time figuring out what to do after the first step, however.
After I have applied the prescribed displacement (birth time 0s, death time 1s), I want to switch to another set of boundary conditions, valid only after time 1s. Is there any way to do this? I know that in e.g. Abaqus you can choose to activate/deactivate boundary conditions in certain time steps, but I have not found any similar function here.
Best regards,
Björn
New to the site and relatively new to Algor. I am currently trying to model a part of a cutting machine with several contact surfaces and pretension of bolts to keep the parts together. However I wanted to start with a simple model, so I used the CAD (IronCad) model I have to mesh, duplicate the lines and create a 1-element thick model (for some reason I was not able to choose 2D elements when I had extracted all the lines?).
What I am aiming to do is really to first press the pieces together (using a prescribed displacement), then applying the pretension as a nodal force and thereafter applying the actual cutting forces. I am having a hard time figuring out what to do after the first step, however.
After I have applied the prescribed displacement (birth time 0s, death time 1s), I want to switch to another set of boundary conditions, valid only after time 1s. Is there any way to do this? I know that in e.g. Abaqus you can choose to activate/deactivate boundary conditions in certain time steps, but I have not found any similar function here.
Best regards,
Björn