best way to apply point force for 3D solid elements?

[Abhidg]

Hi there!!
I am modeling a complex structure with 3D Solid elements in NASTAN . While in the analysis, when I am applying point loads at the desired nodes, some high stress values are seen in the nearby nodes.

Is there a better way of applying point loads so as to avoid these abnormal stress values in the adjacent nodes.

Would highly appreciate any suggestions views.

Abhi.

 

[BlasMolero]

Dear Abhi,
With NASTRAN use the RBE3 element, it is a powerful tool for distributing applied loads and mass in a model. Unlike the 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.
Best regards,
Blas.

~~~~~~~~~~~~~~~~~~~~~~
Blas Molero Hidalgo
Ingeniero Industrial
Director

IBERISA
48011 BILBAO (SPAIN)
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[Abhidg]

Dear Blas,
Thanks for your suggestion. Will keep you posted once I get to try these RBE3 elements.

Thanks and regards,
Abhi