disc brake with ansys

[Francesco87]

Hello everyone, I checked as a regulation and did not find answer to the question I am about to ask you.
I have the code in ansys that realizes in disc brake divided into rotor, pastel and support.
I have to make holes in the rotor by fixing a radial direction.
In practice I have to establish a radial direction, take the distance from the center of the rotor and make the hole of the size I want.
I searched in ansys' help and also in a manual that I have but nn I find nothing.
Please help me...it is very urgent!

distinguished greetings
france

 

[Francesco87]

I managed to create cylinders but the problem is that it always creates them in the middle of the disk, how do I change the point where to create the cylinder?
I thought then to set to that cylinder a material with density from me set nothing so as to schematize the hole, but if there was a simpler way to tell ansys where to remove material creating the hole would be more comfortable... Someone who helps me?

 

[cugior]

I suggest you look at the tutorial that you place the link. It's the easiest way without getting lost in explanations.

the link is:
http://www.mece.ualberta.ca/tutorials/ansys/bt/solid/solid.html

 

[Francesco87]

Thank you very much, I found very useful the way to change the coordinates from Cartesian to cylindrical, but I do not have to operate from the apdl but I have to change directly a code that was supplied to me and that ansys reads in input. So with the help I saw what are the commands to do the cylinders and then remove them via the vsbv command, but it is precisely this command that gives me trouble because when I create the cylinder with the cyl4 ansys nn me command sees it as a volume...where am I wrong?

 

[Francesco87]

Okay, I got it, I found all the lead to get the record. thank you so much cugior for the suggested tutorial was very helpful.

 

[cugior]

nothing. I believe that these tutorials that I have reported to you and that they have reported me in this forum are very useful. Take a look. Good job

 

[matteoso]

I use the "wp" command to create a csys on the fly and there I hit the cylinder. After creating the cylinder, do a boolean operation and remove the cylinder. or even more direct (but I wouldn't swear on the exact name I am x give you) "wcyl"

 

[Francesco87]

matteoso I found the cyl4 command to create the cylinder and then vsbv to do the boolean operation to subtract from the volume of the big disk the cilindretto volume created before.
cmw then I also try cn the commands you said and see what changes. thanks for the suggestion of course

 

[matteoso]

matteoso I found the cyl4 command to create the cylinder and then vsbv to do the boolean operation to subtract from the volume of the big disk the cilindretto volume created before.
cmw then I also try cn the commands you said and see what changes. thanks for the suggestion of course

Yes, the right command is cyl4 (I had predicted that the name I was x you could not be correct!).
ps. if I don't remember badly the 4th parameter in the cyl4 syntax is just the depth of extrusion...if you leave it to 0 the result will be a circle (which however at a later time you can extrude with the vdrag command).

 

[Francesco87]

in version 12 of ansys the cyl4 command provides coordinate x of the cylinder center, coordinate y of the center, initial radius (which you can put 0 to make a full disk otherwise makes you a circular ring) , initial angle, final radius, final angle, depth of extrusion.
so in practice it is as you say because if you don't put the radius and the initial angle the commands become 4 because the final angle seems to me that it is defaulted to 360 degrees if nn you put it

 

[Francesco87]

Hello! new problem...if I do the dynamic analysis of a full disk brake, the program turns correctly, if instead I replace to the full disk the geometry of the perforated disk the program does not turn, or it does not begin to calculate the ways and ansys closes without alerts. What can I do?

the code I use first creates the disk substructures, pastels and support, calculates their ways and then assembles them giving me the proper ways of the total braking system (disco-pastiglia-support).
In practice I want to study how the instability of the disk varies by making structural changes (holes) to the full disk.

 

[Francesco87]

ah! one more thing: do you know a site where you can find images of the ways of a disc brake? so I can have an idea of how they have to come.. and in case I can't make the program turn, I put those I find :d :d :d :d (I have to deliver a report in a short time to the prof and I have to arrange somehow )

 

[RobertoM]

Hi, guys.

My name is roberto student of wisdom and graduating in mechanical ing.

I write the thesis and my argument is "the braking system of the sae formula machine" with which my faculty participates internationally. will you be able to tell me or give me tips for the projecting of the plant? how to choose the diches and size them? all you know is well-known:

thank you all for the answers I will receive

Hello! ! !