🎉Community Raffle - Win $25

An exclusive raffle opportunity for active members like you! Complete your profile, answer questions and get your first accepted badge to enter the raffle.
Join and Win

angular velocity in optistruct

User: "Altair Forum User"
Altair Employee
Updated by Altair Forum User

I am modelling a bearing and doing its analysis in optistruct. However, I am having a problem in imposing angular velocity onto the inner race. I wanted to know is it possible to use the impvelb card for providing angular velocity to the inner race? 

If yes, what is the exact procedure to do so and what are the values of BID, CID, SID that have to be set?

Find more posts tagged with

Sort by:
1 - 8 of 81
    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    Hi @RITVIK

     

    IMPVELB is valid only for multi-body subcases,

     

    What type of analysis are you doing?

     

    You can apply rotational velocity/acceleration using RFORCE card. 

     

    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    Thnx for your input. 

    I am doing a non linear quasi-static analysis of the ball bearing. 

    Sir, someone suggested to me that i can use rbe3 elements to connect a central node to the inner face nodes of the inner race. is this a valid way to impose angular velocity on the inner race?

    Also sir how can i use the RFORCE card? and does using the card just impose the centrifugal forces on the nodes of the inner race or does it impose angular velocity onto the nodes as well?

    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    it's srange to solve static analysis with velocity=)

    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    thank your for your reply. I just searched regarding this. Probably you are right. Since i am new to this and do not know much can u please tell how can i simulate the bearing operation in the time period between the start and when it achieves the steady state of 125.6 rad/s.

    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    Hi,

     

    You can use transient analysis and apply velocity using SPCD. 

     

    There are few other posts in this forum regarding bearing analysis and other transient analysis. Please check the same for more information. 

    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    thank you. Ill try that

    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    Sir, 

    another thing that i wanted to ask is that what kind of analysis should we use if we want to analyze the bearing running at steady state of 1200 rpm and there is a constant radial load on it?

    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    HI,

     

    You can either do an implicit analysis or non-linear transient analysis.