Yield Moment of Cold-Formed Steel Beams under Different Strain Rates
Publication: Journal of Structural Engineering
Volume 127, Issue 3
Abstract
It has been recognized that the mechanical properties of sheet steels and the structural strength of cold-formed steel members can be influenced by strain rate. For studying the local and postbuckling behavior of stiffened and unstiffened compression elements under a dynamic loading condition, 60 beams, which were assembled from the same material, have been tested under different strain rates. To study the structural behavior of hybrid cold-formed steel beams, a total of 72 specimens was investigated. The results showed that the strength of beams increases with increasing strain rates. The amount of increase was found to be dependent on the material yield strength, type of steel, stress-strain relationships, width-to-thickness ratio, type of compression element, and strain rate used in the test. In this research, design procedures were also developed to compute the load-carrying capacity of hybrid beams under different strain rates.
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References
1.
American Iron and Steel Institute (AISI). ( 1996). “Specification for the design of cold-formed steel structural members.” Cold-formed steel design manual, 1996 Ed., Washington, D.C.
2.
Aspden, R. J., and Campbell, J. D. ( 1966). “The effect of loading rate on the elasto-plastic flexure of steel beams.” Proc., Royal Soc., London, A290, 266–285.
3.
Bonder, S. R., and Symonds, P. S. ( 1962). “Experimental and theoretical investigation of the plastic deformation of cantilever beams subjected to impulsive loading.” J. Appl. Mech., 29(December), 719–728.
4.
Forrestal, M. J., and Wesenberg, D. L. ( 1977). “Elastic plastic response of simply supported 1018 steel beams to impulse loads.” J. Appl. Mech., 44(December), 779–780.
5.
Kalyanaraman, V. (1979). “Local buckling of cold-formed steel members.”J. Struct. Div., ASCE, 105(5), 813–828.
6.
Kassar, M., and Yu, W. W. ( 1990). “Effect of strain rate on material properties of sheet steels and structural strengths of cold-formed steel members.” 14th Progress Rep., Civ. Engrg. Study 90-2, University of Missouri-Rolla, Rolla, Mo.
7.
Kassar, M., and Yu, W. W. (1992). “Effect of strain rate on material properties of sheet steels.”J. Struct. Engrg., ASCE, 118(11), 3136–3150.
8.
Pan, C. L., and Yu, W. W. ( 1992). “Design of automotive structural components using high strength sheet steels: Mechanical properties of materials.” 17th Progress Rep., Civ. Engrg. Study 92-2, University of Missouri-Rolla, Rolla, Mo.
9.
Pan, C. L., and Yu, W. W. ( 1993). “Influence of strain rate on the structural strength of cold-formed steel automotive components.” Proc., Automotive Body Mat., Int. Body Engrg. Conf., 44–50.
10.
Pan, C. L., and Yu, W. W. ( 1995). “Design of automotive structural components using high strength sheet steels: Effect of strain rate on the structural strength of cold-formed steel hybrid beams.” 18th Progress Rep., Civ. Engrg. Study 95-1, University of Missouri-Rolla, Rolla, Mo.
11.
Pan, C. L., and Yu, W. W. ( 1998). “Design of automotive structural components using high strength sheet steels: Transformed section method for the calculation of yield moment of cold-formed steel hybrid beams.” 22nd Progress Rep., Civ. Engrg. Study 98-1, University of Missouri-Rolla, Rolla, Mo.
12.
Rawlings, B. ( 1963). “The dynamic behavior of steel in pure flexure.” Proc., Royal Soc., London, Series A, 275(March), 528–543.
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Received: Nov 2, 1999
Published online: Mar 1, 2001
Published in print: Mar 2001
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