13. M modeling

13.1. Characteristics of modeling

Formulation pressure elements PLAN “ACOUSTIQUE”

Divide =	15	meshes QUAD8selon the \(x\) axis
	2	meshes QUAD8selon the \(y\) axis

Boundary conditions:
	VITE_FACE:	(group_MA: Input	Vnor: 0.014)
	IMPE_FACE:	(group_MA: Output	Impe: 445.9)

Node name

\(A=\mathrm{No1}\)

\(B=\mathrm{No33}\)

\(C=\mathrm{No2}\)

\(D=\mathrm{No34}\)

13.2. Characteristics of the mesh

Number of knots:	125
Number of meshes and types:	30 QUAD84 SEG3

13.3. Tested values

Location	Sizes	Reference	Tolerance
\(A\)	\(p(\mathrm{réel})\)	—6.2426	0.1%
	\(p(\mathrm{imag})\)	0.0000	0.1%
	Sound Intensity (real)	0.0437	3%
	Sound Intensity (image)	0	3.5E-4
\(B\)	\(p(\mathrm{réel})\)	—6.2426	0.1%
	\(p(\mathrm{imag})\)	0.0000	0.1%
	Sound Intensity (real)	0.0437	3%
	Sound Intensity (image)	0	3.5E-4
\(C\)	\(p(\mathrm{réel})\)	6.0237	0.1%
	\(p(\mathrm{imag})\)	1.6387	0.1%
	Sound Intensity (real)	0.04037	3%
	Sound Intensity (image)	0	3.5E-4
\(D\)	\(p(\mathrm{réel})\)	6.0237	0.1%
	\(p(\mathrm{imag})\)	1.6387	0.1%
	Sound Intensity (real)	0.0437	3%
	Sound Intensity (image)	0	3.5E-4