|
|
||
|
|
|
|
FROM:
Tadeh Zirakian, Sung Bo Kim and Ayman S. Mosallam,
“Further studies on the use of the extrapolation techniques in case of lateral buckling of steel I-beams”, ASCE 5th International Engineering and Construction Conference (IECC’5), August 27-29, 2008
ABSTRACT: In case of lateral buckling, experimentally determined load versus deflection plots usually take a form where the critical load is masked by the large deformations which occur as a consequence of geometrical and material imperfections, and that the beam fails before the critical load of the perfect beam is reached. Therefore, it is necessary to use an extrapolation technique to obtain more accurate estimates of experimental critical loads than would be given by the experimental failure loads. Also, an extrapolation technique may be used to determine experimentally the critical load of a structure, without having to subject the structure to loading in the vicinity of critical. Based on the significance of these techniques, further studies on the use of Southwell, Modified, Massey, and Meck extrapolation techniques in case of lateral buckling of structures are reported in this paper, and the accuracy of the extrapolated loads is evaluated in various cases.
Page 6 / 114