Application of Stress Diffusers to Beam-to-Column Connection
Publication: Journal of Materials in Civil Engineering
Volume 14, Issue 1
Abstract
A high degree of local bending was observed in the beam flange of a beam-to-column connection modeled with 3D finite-element analyses. The regions of high stress concentration were shown to occur at the weld access hole and the intersection of the bottom beam flange and column flange. The use of a specially designed part termed a “stress diffuser” with a beam-to-column connection, in which the beam web and bottom beam flange are separated near the weld access hole, was found to eliminate the high stress concentration at the weld access hole and reduce the high degree of local bending in the beam flange by 49%. The maximum principal stress at 2.54 mm from the column face was reduced by 31%.
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References
American Welding Society (AWS). (1998). “Structural welding code—steels.” AWS D1.1, Miami.
Chi, W. M., Deierlein, G. G., and Ingraffea, A. R. (1997). “Finite element fracture mechanics investigation of welded beam-column connections.” SAC Joint Venture Task 5.3.1 of Phase II, Cornell Univ., Ithaca, N.Y.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 14 • Issue 1 • February 2002
Pages: 84 - 89
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Sep 11, 2000
Accepted: May 23, 2001
Published online: Feb 1, 2002
Published in print: Feb 2002
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