Tips & Tricks

Here you will find articles on how to solve specific issues related to ESI's software solutions. Missing ESI products will be added progressively. Each article has a short abstract which is accessible to everyone. As logged users you can see the full article with all attached screenshots, and you can post comments related to each article.

Using pinned/simply supported BC in FE to compare to SEA
Why do I need to use pinned/simply supported BC in FE to compare to SEA?, Most, if not all, SEA theory is developed using an assumption of simply supported plates ...
Emna Ben Ali
Vibro-Acoustics
17

How can I move a VA One model backwards in versions using xml?
Possible solutions: A workaround is to copy/paste in the 3D window, which will work in many cases. Copy and Paste will work - it just depends on what you are Copy and Pasting...
Emna Ben Ali
Vibro-Acoustics
14

How can I reduce the size of the modal data imported in a hybrid model?
The model will always contain enough data to solve, and give basic results. For models with hybrid area junctions, nodal data for all wetted faces will be generated/recovered which results in much data.
Emna Ben Ali
Vibro-Acoustics
24

Can I set 'none' as the trim when using pi_fPlateGetTrimTL?
No, you cannot set the TRIM parameter to null using the call .You would have to use another approach of plotting the effective TL (Results>Effective Transmission Loss) instead. Below is a short snippet of how to do this.
Emna Ben Ali
Vibro-Acoustics
14

How can I avoid Out of memory for large hybrid area junctions?
The problem is due to an FE area junction being too large for the full solve.
Emna Ben Ali
Vibro-Acoustics
21

Some references for the FOAM-X 2007 indirect characterization method
References for inverse characterization method in FOAM-X are:
Emna Ben Ali
Vibro-Acoustics
11

Create FE subsystems from a PIDs
How do I create FE subsystems from a PIDs??? Below is an example to:
Emna Ben Ali
Vibro-Acoustics
28

When would I use a General Laminate (GL) instead of the new (2014.5) sandwich model?
One example is for a thick section where the skins are different; in the sandwich model the skins are always the same.
Emna Ben Ali
Vibro-Acoustics
17

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.
Emna Ben Ali
Vibro-Acoustics
5

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:
Emna Ben Ali
Vibro-Acoustics
12