Lateral instability and post-buckling behaviour of zee- and channel-shaped beam sections | |
| Author | Santos, Raul Doctor |
| Call Number | AIT Thesis no.ST-87-26 |
| Subject(s) | Girders Finite element method |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | A finite element method for the analysis of elastic lateral instability and post - buckling behaviour of 2ee and channel sections is presented. The finite element model of Hasegawa et a1. (1) for beam e1ements with genera1 thin - wa11ed cross - section undergoing large displacement, and which also include the effect of warping, is used. The unsymmetrical nature of zee and channel sections introduces considerations not encountered in rectangular beams and I - beams. The warping functions and monosymmetric properties of the sections are derived. Numerical results of a number of simple structures are presented. A comparison with Timoshenko's analytical solution confirms the reliability and accuracy of the present method. The use of the finite displacement theory results in a critical buckling load lower than the classical bifurcation load . Zee and channel beam sections undergo large deformations even at low load level. Current design practice on cold - formed steel seems to overestimate the strength of 2ee and channel beams. |
| Year | 1987 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Hasegawa Akio |
| Examination Committee(s) | Worsak Kanok-Nukulchai ;Wireland, Martin |
| Scholarship Donor(s) | Government of France |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1987 |