Back to Search
Start Over
A relationship between progressive collapse and initial buckling for tubular structures under axial loading
- Publication Year :
- 2013
-
Abstract
- The progressive collapse of tubular structures under axial loading is a challenging problem in mechanics. Due to the nonlinearities in large plastic deformation, such a problem can only be solved case by case under the assumption of an appropriate collapse mechanism. In this paper, a relationship between the progressive collapse of an axially loaded tube and the initial buckling of its windowed counterpart is presented. Numerical investigation was performed on the axial crushing of triangular, square and pentagonal tubes and the initial buckling modes of the corresponding windowed tubes. Results show that at the critical symmetric buckling mode, the theoretical mean crushing force of the angle-shaped column in the windowed tube matches very well with the actual mean crushing force of the conventional one. This relationship is crucial to the development of a generalized method for progressive collapse without assuming collapse mechanism. Based on it, an empirical equation on the mean crushing force of axially loaded square tubes is presented. The mean crushing forces predicted by this equation are in good agreement with the experimental results and theoretical values.
- Subjects :
- Empirical equations
Materials science
business.industry
Mechanical Engineering
Collapse (topology)
Progressive collapse
Structural engineering
Condensed Matter Physics
Square (algebra)
Engineering::Mechanical engineering [DRNTU]
Buckling
Mechanics of Materials
General Materials Science
Tube (container)
business
Axial symmetry
Civil and Structural Engineering
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....e9f955138e515dd2ec6468b8602038ce
- Full Text :
- https://doi.org/10.1016/j.ijmecsci.2013.06.016