Highly shaped sheet metal panels in automotive and heavy truck designs require the use of frequency-dependent stiffness multipliers in statistical energy analyses. This study reviews the use of correction factors determined from FEA, by counting modes within constant-percentage bands. The application of varied, ideal boundary conditions and extended sub-structure are presented as a means to improve model accuracy. Comparisons between measured body panel modal density and FEA provide insight for the FEA-based method, where results are compared to measured modal density determined from spatially averaged driving-point conductance.
Cabin Sheet Metal Stiffness Corrections in SEA
Sae Technical Papers
SAE 2007 Noise and Vibration Conference and Exhibition ; 2007
2007-05-15
Aufsatz (Konferenz)
Englisch
Cabin sheet metal stiffness corrections in SEA
Kraftfahrwesen | 2007
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SAE Technical Papers | 1974
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