Load transfer in RIGID Element

Altair Forum User

Hi all,

 

If I connect two components by the RIGID panel using the RBODY element.

<?xml version="1.0" encoding="UTF-8"?>

 

 

 

I wanted to know how the load transfer takes place. Suppose I apply load to one component will the entire load be transferred to the other component?

 

Thanks,

Datta

Altair Forum User

Hi Datta,

Using rigid bodies transfer of loads from one part to another is possible. Rigid bodies will induce stiffness to the component, that is no relative displacement is allowed between slave nodes and thereby modeling the component as non deformable. 

Altair Forum User

Thank you for the reply George, So when you say transfer of load is possible what do you mean? Does it work like similar to RBE2? Suppose I apply 100N load on the green component in the picture, will 100N be transferred to the blue?

 

Thanks,

Datta

Altair Forum User

Hi Datta,

Yes, the load will be transferred. 

Altair Forum User

Thank you George. 

So can we conclude that in Radioss RBE2 and RBODY have the same effect? 

gopal_rathore

Hi,

I feel the load transfer pattern remain same for both rbe2 and rbody. The difference is in the association of mass and inertia in rigid body and is thus used to model components where we are not interested in an analysis like a bus rollover simulation where we are not interested in chassis and its components like engine , gearbox etc, can be modelled as rbody. The mass in rbody comes only after starter run and in the .out file you can see the rbody gets initialised with some mass and inertia as per ICoG settings and element modelling. RBE 2 however only provides high stifness without any mass or inertia definition.

Altair Forum User

What is rigid load  ?