Browse Publications Technical Papers 1999-01-1698
1999-05-17

Vibro-Acoustic Behavior of Bead-Stiffened Flat Panels: FEA, SEA, and Experimental Analysis 1999-01-1698

Vibration and sound radiation characteristics of bead-stiffened panels are investigated. Rectangular panels with different bead configurations are considered. The attention is focused on various design parameters, such as orientation, depth, and periodicity, and their effects on equivalent bending stiffness, modal density, radiation efficiency and sound transmission. A combined FEA-SEA approach is used to determine the response characteristics of panels across a broad frequency range. The details of the beads are represented in fine-meshed FEA models. Based on predicted surface velocities, Rayleigh integral is evaluated numerically to calculate the sound pressure, sound power and then the radiation efficiency of beaded panels. Analytical results are confirmed by comparing them with experimental measurements. In the experiments, the modal densities of the panels are inferred from averaged mechanical conductance. The radiated sound power and radiation efficiency are measured by using surface intensity scan. Analytical predictions are compared with experimental results for different bead configurations. The study is concluded with a set of guidelines for design of beads on automobile floor panels.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Parametric Optimization of Planetary Carrier for Durability

2019-26-0049

View Details

TECHNICAL PAPER

Development of an Integrated Electrified Powertrain for a Newly Developed Electric Vehicle

2013-01-1759

View Details

TECHNICAL PAPER

Investigation on Torque Jump Up and Vibration at High Rotation Speed of a Wet Clutch

2015-01-2184

View Details

X