SPOINT equivalent

[stressiterior123]

Hi,

I am trying to simulate linear GAP element in FEMAP with NX Nastran. But it formulation requires use of SPOINT (scalar pont) and FEMAP doesn't support SPOINT. Is there any equivalent I can use to replace SPOINT?
Please let me know.

Thanks

 

[rb1957]

i justed searched the available help for "gap" and came across "how to create a gap element" ... seemed pretty straight forward. nothing about "SPOINT", just create your nodes, then define your gap element stiffness; maybe in the background it's doing this "SPOINT" thing, but ...

 

[SAITAETGrad]

Check the translation?

 

[BlasMolero]

Dear Stressiterior123,
To define CGAP node-to-node linear contact elements in FEMAP & NX Nastran you don`t need any SPOINT.

In NX Nastran, a scalar point has only one degree of freedom. A scalar point is similar to a grid point in the way that NX Nastran assembles it into the matrix equation. However, a scalar point has no spatial orientation, so it does not require a coordinate system. It is simply an additional degree of freedom that you can define in your model. Scalar points are useful for modeling with scalar elements, multipoint constraints (MPCs), computing relative and average motions, and defining the warping coefficients of a thin-walled beam. SPOINT entries are used primarily to define scalar points appearing in constraint equations but to which no structural elements are connected.

Here you are an example using FERMAP & NX Nastran explained step-by-step where I have used (1-D) CGAP node-to-node contact elements (see point 4.3):

http://www.iberisa.com/soporte/femap/soldadura_punto_a_punto.htm

Best regards,
Blas.


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

IBERISA
48011 BILBAO (SPAIN)
WEB:

http://www.iberisa.com