graphs with combin40 on ansys

[cenzz]

hi to all, for a thesis work I need to reproduce the graphs that I attached relative to a shock absorber of a car. the graphs were made on ansys through the combine40 element. the problem I'm finding, being uncomplicated with ansys, is that I can't figure out how to introduce the combine40 element with its script as I did in the images I attached

 

[F_Ingrasciotta]

Good morning.
it is not clear what you are using of ansys, in particular:
-ansys workbench mechanical
-ansys apdl

in ansys apdl the combin40 command enters the \prep7 (where you define geomtria), then you will have a test file that loads from time to time and launches to make your simulation.

on ansys workbench mechanical instead you have to press with the right button above the individual sections (see geometry, results etc.) and you will appear, in the drop-down menu, a logo with a sort of white sheet with a red c. clicking on that icon opens a text file that allows you to enter the commands manually, there you can put the combin40 command.

Maybe if you give us more information also other more experienced users of me can help you.

to this link you can find all the information about the combin40 element

 

[cenzz]

Good morning.
it is not clear what you are using of ansys, in particular:
-ansys workbench mechanical
-ansys apdl

in ansys apdl the combin40 command enters the \prep7 (where you define geomtria), then you will have a test file that loads from time to time and launches to make your simulation.

on ansys workbench mechanical instead you have to press with the right button above the individual sections (see geometry, results etc.) and you will appear, in the drop-down menu, a logo with a sort of white sheet with a red c. clicking on that icon opens a text file that allows you to enter the commands manually, there you can put the combin40 command.

Maybe if you give us more information also other more experienced users of me can help you.

to this link you can find all the information about the combin40 element

Thank you for the answer, I am using ansys workbench mechanical. I managed to figure out how it works. in particular I understood that the first part of the code up to "m,2,ux" I must insert it in:
connection --> spring --> commands

the second part instead in:
static structural --> solution --> commands

from this I got a chart where however no function appears and in which the sizes on the axes are staggered. In particular, the y axis contains forces of the order of 10^18 n, while that of the x shows movements of the order of 10^-8 m.
strange thing having imposed a shift of 0.02m and a force of 1000n.

I believe that the problem is in the definition of knots, as the geometry of my model is different from what I have as a reference. I don't know how to define the knots of my structure, could you help me?

 

[F_Ingrasciotta]

the combin40 element I imagine is connected to two knots of two different geometric entities.
the first step would be to identify two nodes on the two structures to be used as references to the combin function. another possible solution would be to create a node of support, always defining the function "command" and from that to make a cerig on a certain area of the geometric entity (so by doing I think they should avoid singularity on the state of tension of the geometries).

 

[cenzz]

the combin40 element I imagine is connected to two knots of two different geometric entities.
the first step would be to identify two nodes on the two structures to be used as references to the combin function. another possible solution would be to create a node of support, always defining the function "command" and from that to make a cerig on a certain area of the geometric entity (so by doing I think they should avoid singularity on the state of tension of the geometries).

As I have already said, they are the basis for the use of the program, so I do not know how or how to identify the two knots, or how to create them.