By manjunath and fantin marius
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Additional resources for Aero Acoustics of Fixed Wing and Rotary Wing Aircraft
05. If this value of cannot be achieved with a 50 percent flange reduction, then a bottom flange RBS modification is not recommended. 05 times of the beam. The limited test data on RBS modifications is inadequate to determine if this level of moment can be tolerated by pre-Northridge type connections with high toughness welding on a consistent and reliable basis. 05 should therefore be considered an upper bound. Smaller values of are preferred. Consequently, the largest possible flange reduction should be used for the RBS in order to minimize the moment at the face of the column.
This will result in the greatest reduction in the moment at the face of the column. 6) In this equation, represents the maximum moment at the face of the column divided by the plastic moment of the beam. Substituting Eqs. 6 into Eq. , to keep the moment at the face of the column as low as possible. 95. , 50 percent flange reduction). STEP 2 Compute from Eq. 5. STEP 3 Compute from Eq. 8. 05, then the RBS dimensions are satisfactory. , haunches. In Eqs. 7 above, represents the expected yield stress of the beam flanges.
Analyses of these buildings, which ranged from 2 to 17 stories in height, indicated that the plastic rotation 35 © 2003 by American Institute of Steel Construction, Inc. All rights reserved. This publication or any part thereof must not be reproduced in any form without permission of the publisher. connections will provide a significant improvement in performance compared to existing pre-Northridge connections. The use of these modified connections should reduce potential economic losses and mitigate safety concerns for existing WSMFs in future earthquakes.
Aero Acoustics of Fixed Wing and Rotary Wing Aircraft by manjunath and fantin marius