An aluminum vehicle body noise transfer path optimization method based on plate sound pressure contribution
A technology for noise transfer and path optimization, applied in design optimization/simulation, instrumentation, geometric CAD, etc., can solve problems affecting vehicle driving safety, increase driver and passenger fatigue, improve noise transfer characteristics, and shorten R&D. cycle, the effect of improving efficiency
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[0030] Please refer to figure 1 , the present embodiment is a method for optimizing the noise transmission path of an aluminum body based on the sound pressure contribution of the panel, which includes the following steps:
[0031] (1) Design input: The finite element model of the vehicle body and the finite element model of the acoustic cavity are established in the Hyper Mesh software.
[0032] (2) Boundary condition setting: it includes setting the excitation point and response point, setting the analysis frequency range; and respectively applying the set load force F (such as 1N) along the X axis, Y axis, and Z axis at the excitation point The excitation; the analysis frequency range is 20-200Hz.
[0033] in,
[0034] Please refer to figure 2 , the excitation points include: left rear shock absorber mounting point 101, rear suspension mounting point 102, left rear shock absorber mounting point 103, front suspension mounting point 104, left suspension mounting point 105...
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