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
Conference paper
English
Cabin sheet metal stiffness corrections in SEA
Automotive engineering | 2007
|Stiffness Analysis of Sheet Metal Shells under Concentrated Loads
SAE Technical Papers | 1974
|European Patent Office | 2018
|