Centrifugal forces

mabefa

Hi, 

I would like to apply a centrifugal force to my model so I created a loadcollector with card image RFORCE but I don't know what the fields refer.

I discovered that A refers to angular veolcity, RACC to angular acceleration, but what do the fileds G, CID, R1, R2, R3, IDRF refer to?

 

tinh

Hi

you can find it in optistruct reference help

G - origin of rota vector

CID - coordinate system of vector

R1R2R3 - components of vector

IDRF - id of element set applied this force

mabefa

Thanks for the answer,

Where can I find the optistruct reference help?

tinh

Hi

enter menu Help of hypermesh

 

But I see it is very slow while browsing help documents, especially from v2017

 

 So I usually enter folder <install dir>\help

and then use window search tool to search files, just enter 'rforce' in search box, the html file will appear soon

mabefa

Thank you so much.

moeen

Altair Forum User said:

Hi

you can find it in optistruct reference help

G - origin of rota vector

CID - coordinate system of vector

R1R2R3 - components of vector

IDRF - id of element set applied this force

 

How to calculate R1 R2 and R3? I didn't fullt get it.

Altair Forum User

Altair Forum User said:

 

How to calculate R1 R2 and R3? I didn't fullt get it.

They are the versor components of rotation axis. For example : rotation axis parallel to z direction -> R1=0 R2=0 R3=1. In general you can use a  vector parallel to rotation axis.