Spectra

In this section, spectra can be created.

A spectrum is a JSON file with a name, a displacement max, a directional type and a list of dampings.

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1. Organisation

On the left panel, you can create folders, sub-folders and spectra.

The - button is used both for removing folders and spectra.

A folder can be a site, a phase, a location or a floor for several spectrum files.

You can also drag a file/folder on another folder.

2. Spectrum

A spectrum defines the curves frequency/acceleration for different directions. And that for several dampings.

An informative dispacement max can be entered :

Properties Unit Metric Unit USA
Dx, Dy, Dz mm in

The type that defines the curves can be :

Property Nb curves Note
X + Y + Z 3 One curve by direction
X + YZ 2 One curve for X and one curve for both Y and Z
Y + XZ 2 One curve for Y and one curve for both X and Z
Z + XY 2 One curve for Z and one curve for both X and Y
XYZ 1 One curve for all directions

Based on this type, 1, 2 or 3 tables must be filled.

Click the + button (next to Dampings) to add a damping value (%) and a label :

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Fill the tables by adding rows for the pair frequency/acceleration.

Property Unit
Frequency Hz
Acceleration G’s

It is possible to insert a row between 2 elements!

ATTENTION, the frequencies must be filled in ascending order

Each table can have its own number of rows

You can also verify the tables of a damping by clicking on the last button next to Value % :

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