1{
2 "challenge_id": "plate-strike-v1",
3 "title": "Struck free aluminum plate: radiated pressure",
4 "version": 1,
5 "output": {
6 "type": "wav",
7 "sample_rate_hz": 48000,
8 "num_samples": 144000,
9 "channels": 1,
10 "sample_format": "float32",
11 "signal": "acoustic pressure at the listener point from the Rayleigh integral over the top face",
12 "signal_unit": "Pa",
13 "signal_scale": 2.6
14 },
15 "parameters": {
16 "Lx": 0.3048,
17 "Ly": 0.3048,
18 "h": 0.00104,
19 "E": 68.9e9,
20 "nu": 0.33,
21 "rho": 2700.0,
22 "sigma0": 2.3,
23 "eta": 5.0e-8,
24 "strike_x": 0.09144,
25 "strike_y": 0.10668,
26 "strike_radius": 0.01,
27 "strike_duration": 0.0005,
28 "strike_peak_force": 10.0,
29 "rho_air": 1.204,
30 "c_air": 343.0,
31 "listener_x": 0.2524,
32 "listener_y": 0.1524,
33 "listener_height": 0.5
34 },
35 "metrics": {
36 "primary": "waveform_l2",
37 "waveform_l2": {},
38 "spectrogram_l2": {
39 "window": "hann_periodic",
40 "n_fft": 2048,
41 "hop": 512
42 }
43 },
44 "fields": {
45 "format": "hdf5",
46 "quantity": "normal displacement of the mid-plane, u_z(x, y, 0, t)",
47 "units": "m",
48 "axes": ["t", "y", "x"],
49 "shape": [3001, 61, 61],
50 "frame_rate_hz": 1000,
51 "dtype": "float32"
52 },
53 "reference_solution": null
54}