Who invented Nastran?

Nastran

What is RBE2 in HyperMesh?

RBE (Rigid Body Elements) are the most simple of 1D elements and simply connect two or more nodes together. In the case of an RBE2, one node serves as the Independent and the other(s) the Dependant node(s).

How is the rbe3 element used in a model?

The RBE3 element is a powerful tool for distributing applied loads and mass in a model. Unlike the RBAR and RBE2 elements, the RBE3 doesn’t add additional stiffness to your structure. Forces and moments applied to reference points are distributed to a set of independent degrees of freedom based on the RBE3 geometry and local weight factors.

How does RBE2 and rbe3 transfer force?

RBE2 transmits the displacements and RBE3 transmits the Loads (MPC Forces) REB2 transfer equal force in all direction ,REB3 transfer force according to distance that is the node which near to REB experience more force and vice versa. RBE2 need not have to equally transfer the loads to all of its slave nodes.

Which is the grid point 99 in rbe3?

Grid point 99 is called the REFGRID and is the location where the force is applied. This point is connected only to those degrees of freedom listed on the REFC field (the T3 component in this example). The default action of this element is to place the REFC degrees of freedom in the m -set.

Which is an example of a simple rbe3 distribution?

In this example, a simple distribution based only on the geometry of the RBE3 is desired so that a uniform weight is applied to all points. The weighting factors are not required to add up to any specific value. For this example, if the WT1 field is 4.0 instead of 1.0, the results will be the same.