BUCKLING EXPERIMENTS OF AXIALLY COMPRESSED CIRCULAR CYLINDER WITH IMPERFECT LENGTH
Abstract
Buckling experiment on the effect of imperfect length on the buckling load of axially compressed circular cylinder is presented in this paper. Seven cylindrical specimens with different wave number ranging from 0 to 12 were manufactured using advanced manufacturing process. Specimens were cut from 1 mm mild steel plate using waterjet machining and weld using Metal inert gas welding. During the cutting process sinusoidal waves were introduced. The magnitude of the waves is assumed to be a fraction of the axial length of the cylindrical shell structure. The ratio of axial imperfection-to-axial length of the cylinder (2A/L) was taken to be 0.1. Repeatability of experimental buckling load for two nominally identical pairs with no waves (perfect) and 12 waves (imperfect) was good. The error within each pair were: 3% and 4%. Furthermore, experimental results indicate that the imperfect length in the form of sinusoidal waves strongly affect the load carrying capacity of circular cylinder [(58.62 kN; 60.47 kN) for perfect cylinders; (32.38 kN) for cylinder with 4 waves; (20.23 kN) for cylinder with 8 waves; (28.59 kN) for cylinder with 10 waves and (30.48 kN; 31.79 kN) for cylinders with 12 waves]. Also, it was revealed that the buckling load of the cylinder reduces as the axial imperfection amplitude of the cylinder increases.
Downloads
Authors who publish with this journal agree to the following terms:
- Authors transfer copyright to the publisher as part of a journal publishing agreement with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) after the manuscript is accepted, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).