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035 _a.b10380450
099 9 _aAIT Thesis no.ST-92-26
100 1 _aYonezawa, Hiroshi
245 1 0 _aInvestigation of the Wagner hypothesis by degenerated thin-walled elements
260 _aBangkok :
_bAsian Institute of Technology,
_c1992
300 _a54 leaves
490 1 _aThesis ;
_vno. ST-92-26
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Civil Engineering
502 _aThesis (M.Eng.) - Asian Institute of Technology, 1992
520 _aThin-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.
650 0 _aThin-walled structures
700 0 _aWorsak Kanok-Nukulchai,
_eChairperson
700 1 _aMaekawa, Koichi,
_eExamination committee
700 0 _aPennung Warnitchai,
_eExamination Committee
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. ST-92-26
856 _3Full-Text
_u http://203.159.5.9/ait-thesis/detail.php?q=B16928
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