This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Lightweight Stiffening Ribs in Structural Plates

Journal Article
ISSN: 1946-391X, e-ISSN: 1946-3928
Published March 28, 2017 by SAE International in United States
Lightweight Stiffening Ribs in Structural Plates
Citation: Babu, V. and Gerth, R., "Lightweight Stiffening Ribs in Structural Plates," SAE Int. J. Commer. Veh. 10(2):489-497, 2017,
Language: English


The aim of this analysis was to model the effect of adding stiffening ribs in structural aluminum components by friction stir processing (FSP) Nano material into the aluminum matrix. These stiffening ribs could dampen, redirect, or otherwise alter the transmission of energy waves created from automotive, ballistic, or blast shocks to improve noise, vibration, and harshness (NVH) and structural integrity (reduced joint stress) response. Since the ribs are not created by geometry changes they can be space efficient and deflect blast / ballistic energy better than geometry ribbing, resulting in a lighter weight solution. The blast and ballistic performance of different FSP rib patterns in AL 5182 and AL 7075 were simulated and compared to the performance of an equivalent weight of RHA plate FSP helps to increase localized strength and stiffness of the base metal, while achieving light weighting of the base metal.