C0-2T

Benchmark Problems

Benchmark Problem C0-2T

-Properties-

category	type	index	domain	object	note
C. structural-acoustic	0. basic	C0-2T	time	plate in baffle	scattering

Geometry:
Cubic cavity (1 m * 1 m * 1 m) with a thin plate (1 m*1 m) located on the surface z = -0.25.

Boundary condition:
Boundary condition of the plate is simply supported edge. All surfaces inside the cubic cavity are rigid boundaries. A point source (S) is located at (0.5, -0.5, -0.4) , and produces the impulse at t = 0.

Physical properties of the plate:
Thickness : 0.01 m
Young’s modulus : 7.5*1010 N/m2
Poisson’s ratio : 0.22
Density : 2500 kg/m3
Loss factor : 0.002

Fig. C0-2T-1: Geometry of problem C0-2T (unit: m).

-Task A-

Impulse response:
Input: vibration acceleration [m/s²] of the point source. Output: sound pressure [Pa] 3 points (0.5, 0.5, -0.5) (R2), (0, 0.5, 0) (R3) and (0.4, 0.3, 0.2) (R4).

Dataform:
d-c0-2ta.xls