Tips & Tricks

Is the coloring correct for an BSR clearance contour?

Is the coloring correct for an BSR clearance contour? Yes, this is by design, as higher to low values are always plotted red to blue.

Solving X resonant modes with identical natural frequencies gives unexpected results - why?

The case of a model with exactly identical natural frequencies is causing the "x resonant modes around center frequency" routine to get confused. A few things that can be done:

How can I batch update the connection between an SEA subsystems and a SIF?

This can in most cases be achieved by using the utility "Connect Semi-Infinite Fluid" script available with in VA One.

Can I set the angle for a DAF applied on an SEA panel?

The angle can be set for an NCT, so a workaround is to use a "gap" NCT and set the angle for this NCT

Split a flat FE face

How can I split a flat FE face?, A way to split a FE face manually is to use the script "General > Create >Create FE Geometry from Selection".

I get a Target Cluster Full error - what does it mean?

It is a known issue in 2013 with a large number of frequencies being recovered at a large number of nodes

Radiation from ribbed plates

There are here two competing phenomena in the structural-acoustic behavior of bare plates versus ribbed plates:

Why would one want to use the Efimtsov model instead of the Cockburn/Robertson model for a TBL source?

From Graham: the main advantage of the Efimtsov versus the Cockburn/Robertson model is that it accounts for the dependence of the decay coefficients (i.e. correlation length) on boundary layer thickness.

Can VA One import FE NASTRAN models with superelements defined?

VA One can import FE models with superelements (SE) defined...

Does VA One SEA use cached data when solving in batch mode?

Does VA One SEA use cached data when solving in batch mode?, Yes, with a .va1 as input to the batch solve, VA One SEA will use the CLF's cached in that .va1 if they exist.