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Instability of cylindrical shells with single and multiple cracks under axial compression
- Source :
- Thin-Walled Structures. 54:35-43
- Publication Year :
- 2012
- Publisher :
- Elsevier BV, 2012.
-
Abstract
- Linear eigenvalue buckling analysis was carried out for singly and doubly cracked cylindrical thin shells under axial compression using the finite element method. First, the effect of crack size and orientation on the buckling behavior of an axially loaded shell with a single crack was studied. Then, the buckling behavior of a cylinder with two parallel longitudinal cracks was investigated. Two different buckling shapes with cross-sectional deformation profiles that resemble letters M (symmetric) and N (anti-symmetric) were identified as the first buckling modes of the cylinder. The exchange between these local buckling modes due to variation of crack size and spacing was illustrated. The transition between these two buckling shapes can be used to estimate the ‘maximum interaction distance’ of the cylinder cracks—the separation distance beyond which the two cracks do not interact in affecting the buckling load of the cylindrical shell. The influence of shell thickness and crack length on the maximum interaction distance was quantified for cylinders with two co-centered (i.e., parallel offset) or collinear longitudinal cracks. Additional simulations were carried out for cylinders with multiple symmetrically spaced longitudinal cracks to show how the behavior of single and double cracks can give the buckling load and mode shape of cylinders with multiple cracks.
- Subjects :
- Materials science
business.industry
Mechanical Engineering
Shell (structure)
Building and Construction
Mechanics
Structural engineering
Physics::Classical Physics
Instability
Finite element method
Physics::Geophysics
Condensed Matter::Materials Science
Buckling
Normal mode
Cylinder
Deformation (engineering)
Axial symmetry
business
Civil and Structural Engineering
Subjects
Details
- ISSN :
- 02638231
- Volume :
- 54
- Database :
- OpenAIRE
- Journal :
- Thin-Walled Structures
- Accession number :
- edsair.doi...........e531497b1276e5c0122db02a77563fcb