Fig 1.
High-speed airflow field test.
Fig 2.
The noise test.
Fig 3.
Noise data inside vehicle.
Table 1.
Noise at the key frequencies.
Fig 4.
Results of autocorrelation analysis.
Fig 5.
Sound field test (a) the model; (b) the test result of XOZ plane inside vehicle; (c) the S0 region.
Fig 6.
The sound field test of the TWMP in region S0.
Fig 7.
Vibration and noise test.
Fig 8.
Booming noise data of TWMP.
Fig 9.
The vibration test data of TSWM.
Fig 10.
The modal of TWMP.
Fig 11.
The modal of acoustic cavity.
Fig 12.
Deformation test of TWMP.
Fig 13.
The deformation data of TWMP.
Fig 14.
The time domain data of deformation in region S2.
Fig 15.
(a) The flow field (b) The normal force in region S0.
Fig 16.
(a) Attachment position (b) Equivalent model of damping plate.
Table 2.
Parameters of damping plate specimen.
Fig 17.
Finite element model of TWMP.
Fig 18.
Dynamic model of TWMP.
Fig 19.
Vibration comparison data in the time domain.
Fig 20.
Vibration comparison data in the frequency domain.
Fig 21.
The maximum deformation of TWMP with different n.
Fig 22.
Simulation comparison results.
(a) The time domain curve. (b) The frequency domain curve.
Fig 23.
(a) The test photograph. (b) The deformed data. (c) The sound field data.
Fig 24.
Comparison results of vibration test data.
(a) The time domain data. (b) The frequency domain data.
Fig 25.
Noise comparison results near the driver’s ear.
(a) Noise data under uniform acceleration conditions. (b) Noise data at 120 m/h.
Fig 26.
Noise comparison results near the passenger’s ear.
(a) Noise data under uniform acceleration conditions. (b) Noise data at 120 kmh.