02653nam a2200397 4500 20260818095422.0 170398 th eng .b10233386 AIT Thesis no. 1125 Alwis, Weeramuni Anthony Mervyn Elastic lateral torsional buckling of unbraced and braced planar frames Bangkok : Asian Institute of Technology, 1977 51 p. Thesis ; no. 1125 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand Thesis (M.Eng.) - Asian Institute of Technology, 1977 A general finite-element formulation to obtain lateral-torsional buckling solution of braced and unbraced planar structures loaded in-plane, is presented. The effects of in-plane deformations on lateral-torsional buckling are included. A main feature is that the in-plane and out-of-plane deformations are treated separately to reduce computational efforts, unlike most of other formulations dealing with a similar subject. In-plane deformations are determined by following the loading path in incremental steps, through a series of equilibrium states and the critical load is found by determining the point at which the determinant of stiffness matrix of out-of-plane deformations becomes zero. The validity of the formulation is verified by testing for convergence and comparing the solutions with available results. The behaviour of un braced and braced frames are investigated using this formulation. Structural frames Buckling (Mechanics) Mathematical models Usami, Tsutomu, Chairperson Karasudhi, Pisidhi, Examination Committee Panitan Lukkunaprasit, Examination Committee Belgium Government, Scholarship Donor Asian Institute of Technology. Thesis ; no. 1125 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B23195 .b10233386 mnait x 251209 2 951012 m a x 0 mnait mnarc 20 40 Barcode : 30050003022117 CREATED : 1994-05-17 RECORD # : i10284837 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160087697 CREATED : 2016-04-05 RECORD # : i12970748 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 35692 35692 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. 1125 30050003022117 2026-08-18 09:54:22 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. 1125 30050160087697 2026-08-18 09:54:22 2026-08-18 40