ELASTO-PLASTIC INTERACTIVE BUCKLING OF COLD-FORMED HOLLOW SECTIONS
Alaa Mostafa Abdel-Moneim Korashy;
Abstract
A summary of the work presented in this thesis is introduced. The main conclusions and the suggestions for future research resulting from the present study are presented.
6.1 Summary
The instability modes of axially loaded thin-walled cold-formed rectangular hollow sections of columns were studied. The columns were pin-ended. The instability modes of thin-walled cold-formed rectangular hollow sections of beams were also studied: concentrated end moments were applied to the beam sections. The beams were also pin-ended.
A finite element model was formed using a 4-node quadrilateral thick shell element. Both geometric and material nonlinearities were considered. Initial imperfection was taken into consideration for the column's sections. The model was verified using previous experimental work. Several cross sections were chosen for the verification to check the accuracy of the model. The finite element computer programme COSMOS/M was used for the analysis. The arc-length control technique together with the modified Newton-Raphson technique as an iterative solution method was used to obtain the nonlinear static equilibrium solution for the instability problems. The finite element programme was used to:
I) Predict the ultimate load capacity of columns with different cross sections.
6.1 Summary
The instability modes of axially loaded thin-walled cold-formed rectangular hollow sections of columns were studied. The columns were pin-ended. The instability modes of thin-walled cold-formed rectangular hollow sections of beams were also studied: concentrated end moments were applied to the beam sections. The beams were also pin-ended.
A finite element model was formed using a 4-node quadrilateral thick shell element. Both geometric and material nonlinearities were considered. Initial imperfection was taken into consideration for the column's sections. The model was verified using previous experimental work. Several cross sections were chosen for the verification to check the accuracy of the model. The finite element computer programme COSMOS/M was used for the analysis. The arc-length control technique together with the modified Newton-Raphson technique as an iterative solution method was used to obtain the nonlinear static equilibrium solution for the instability problems. The finite element programme was used to:
I) Predict the ultimate load capacity of columns with different cross sections.
Other data
| Title | ELASTO-PLASTIC INTERACTIVE BUCKLING OF COLD-FORMED HOLLOW SECTIONS | Other Titles | الانبعاج المتداخل المرن - اللدن للقطاعات المفرغة المشكلة على البارد | Authors | Alaa Mostafa Abdel-Moneim Korashy | Issue Date | 2001 |
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