adding mass in rbe2

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hello sir,

I do want to know how to add mass to a rbe2 rigid using admas in radioss?What are the significance of the elements M,M-ADV0,M-ADV1,SPHCEL?

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited February 2017

    Hi Ayush,

    You can directly add mass on to the rigid body. Go to Utility tab>Rbody Manager>Select the rigid body>Card Edit and there is an option available to add mass to the rigid body.

    Using ADMAS user can add mass to nodes or a group of nodes.  For M-ADV0, the mass value will be added to each node in the set. Whereas, in M-ADV-1, it divides the mass value evenly among all of the nodes in the set. 

    SPHCEL describes the SPH (Smooth Particle Hydrodynamics) cells. It is a kind of modelling approach where it is a mesh free method and there is no physical contact between the particles. Smoothed particle hydrodynamics is a remarkably versatile and simple approach for numerical fluid dynamics. Typical example is bird strike analysis where bird is modelled using SPH method.

    You can see a similar kind of simulation here: https://www.youtube.com/watch?v=7vPci1PM2nI

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited February 2017

    Is there any example about add mass for solving drop impact simulations?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited February 2017

    Hi Roy,

    There are no examples available now related to ADMAS with drop simulations. You can refer Example 12 - Jumping Bicycle from Help Menu where ADMAS option is used.

    Also refer RD-3597: Cell Phone Drop Test using HyperMesh tutorial which is a typical drop simulation.

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