| Author | Casem, Conrado Sibayan |
| Call Number | AIT Thesis no. 295 |
| Subject(s) | Columns
Structural engineering
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology,
Bangkok, Thailand. |
| Publisher | Asian Institute of Technology |
| Abstract | The elastic flexural-torsional buckling of beam-columns consisting of prismatic bars with bisymmetric, thin walled open cross sections is analyzed using a discrete element idealization method. The matrix force
displacement equation for the structural elements into which a beam-column is idealized is formulated using Castigliano's first theorem with the strain energy expression for a bent and twisted bar loaded with axial
thrust and primary bending moment. The matrix equations representing the elements of a beam-column are then assembled, forming a general matrix equation containing the combined stability and elastic stiffness matrices from which critical loads may be evaluated using the determinantal criterion of stability. The method is exemplified by the analysis of the buckling behavior of W beam-columns loaded with axial thrust and end moments applied about the major axis of the section. The results, shown in interaction diagrams, compare well in shape with those obtained in the existing literature. Critical loads for simple flexural buckling of columns and for lateral
buckling of simply supported beams subjected to end moments are very close
upper bound estimates of the "exact" values. |
| Year | 1970 |
| Type | Thesis |
| School | Student Research Before 1980 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | McGuire, William |
| Examination Committee(s) | Lee, Seng-Lip ;Smith, Robert B.L. |
| Scholarship Donor(s) | Asian Institute of Technology |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1970 |
