1. Reference problem

1.1. Geometry

Thickness of all plates:	\(t=0.005m\)
Top and bottom plates:	length \(a=0.375m\) width \(b=0.2m\)
Vertical plates:	length \(a=0.375m\) width \(b=0.05m\)

1.2. Material properties

\(E=2.1{10}^{11}\mathrm{Pa}\)

\(\nu =0.3\)

\(\rho =\mathrm{7 800}\mathrm{.}\mathrm{kg}/{m}^{3}\)

1.3. Boundary conditions and loads

Free structure in every way.

1.4. Initial conditions

Not applicable for modal analysis.