02975nam a2200397 4500 20260818144352.0 220798 th eng .b10380450 AIT Thesis no.ST-92-26 Yonezawa, Hiroshi Investigation of the Wagner hypothesis by degenerated thin-walled elements Bangkok : Asian Institute of Technology, 1992 54 leaves Thesis ; no. ST-92-26 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Civil Engineering Thesis (M.Eng.) - Asian Institute of Technology, 1992 Thin-walled structural members can be used in many ways. When they are employed as columns, they are subjected to buckling by torsion and flexure. In the buckling analysis of thin-walled members, the "Wagner hypothesis" has generally been accepted. But after Ojalvo rejected this theory by presenting his new theory without Wagner's hypothesis, many researches made efforts to settle the dispute on the validity of Wagner's hypothesis. In this study, many arbitrary shapes of cross sections were examined in order to identify conditions under which the theory using Wagner hypothesis are and are not applicable. To demonstrate the difference between the two theories, lateral buckling and combined flexural torsional buckling were investigated. Solving problems of stability of structural members requires a six-node degenerate finite element for geometrically linear and non-linear analysis of thin-walled structures to be developed. This is due to the fact that the stiffness formulation of this element does not invoke the Wagner Hypothesis. The result of the present analysis should establish a valid basis for comparing the two theories. Thin-walled structures Worsak Kanok-Nukulchai, Chairperson Maekawa, Koichi, Examination committee Pennung Warnitchai, Examination Committee Asian Institute of Technology. Thesis ; no. ST-92-26 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B16928 .b10380450 mnait s 240329 2 951012 m a s 0 mnait mnait mnarc 20 40 Barcode : 30050003065934 CREATED : 1995-10-14 RECORD # : i10475709 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050003065942 CREATED : 1995-10-14 RECORD # : i10475710 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160022181 CREATED : 2016-04-04 RECORD # : i1292300x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 64857 64857 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no.ST-92-26 30050003065934 2026-08-18 14:43:52 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no.ST-92-26 30050003065942 2026-08-18 14:43:52 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.ST-92-26 30050160022181 2026-08-18 14:43:52 1 2026-08-18 40