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Technical Development Using the Structural and Acoustic Hybrid Model for Reducing Vibro-Acoustic Transfer Function
Published October 20, 1998 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Autumn Conference
Structural and acoustic hybrid model, defined as the combined one of vehicle body structure''s test modal model and its cavity''s acoustic FE model, is used to predict vibro-acoustic transfer function. In order to enhance the coupling quality between structural vibration and acoustics, the unmeasured components of structure''s eigen vector is interpolated as the structural deformation output by static FE analysis, in which the eigen vector''s components identified on some locations on vehicle body by modal testing are used as enforced displacement input. This hybrid model is shown to be available after applying it to modal participation analysis, sensitivity analysis and simulation of structural modification.