Optistruct explicit Rigid body velocity

greiffith tanzal_21385
greiffith tanzal_21385 Altair Community Member
edited May 2023 in Community Q&A

Hi Everyone, 

 

I just found out that Optistruct now have a possibility to run explicit Simulation like this Tutorial (OS-T: 7000 Phone Drop Test Analysis) (https://2021.help.altair.com/2021/hwsolvers/os/topics/solvers/os/phone_drop_test_analysis_tutorial_r.htm#reference_vgr_whz_jkb) 

I already done the tutorial and now i want to try something slightly different. I would like to constrained the phone in all DOF, an let the rigid wall (Rigid body in case the rigid component not a planar surface) fall with a predefined velocity in a curve. 

I try the same way with TIC(V) like in the example but it still not working. I try to define Rigid body (RBE2) and it also still not working.

Can somebody help me how to assign the velocity to the rigid body?

Thank you in advance 

Best regards,

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Answers

  • Johan Dahlberg_20306
    Johan Dahlberg_20306
    Altair Employee
    edited May 2023

    Hi Greiffith
    Then you need to define TLOAD1 and create a table for input of the desired motion
    TIC(V) are for initial conditions!
    So, in your case "fall with a predefined velocity in a curve" I would have started with prescribed displacement.

    /Johan

  • PaulAltair
    PaulAltair
    Altair Employee
    edited May 2023
    Johan Dahlberg_20306 said:

    Hi Greiffith
    Then you need to define TLOAD1 and create a table for input of the desired motion
    TIC(V) are for initial conditions!
    So, in your case "fall with a predefined velocity in a curve" I would have started with prescribed displacement.

    /Johan

    Though, I would question whether this is really what you want? If you 'prescribe' the falling velocity of the object then the phone will not stop the prescribed motion, actually, a TIC just above the phone is more useful?

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