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Mechanics in Engineering ›› 2004, Vol. 26 ›› Issue (3): 0-0.doi: 10.6052/1000-0992-2003-082

• Education Study •    

ANALYSIS OF ELASTIC COLLAPSING OF PERFORATED CASING

  

  • Received:2003-02-27 Revised:2003-11-07 Online:2004-06-10 Published:2004-06-10

Abstract: The perforated casing is more vulnerable to collapse under external pressure than that without perforates. This paper gives the elastic differential equation of collapse of perforated casing, and a general formula for reduction factor of elastic collapsing by perturbation method. Compared with the exact solution of square holes, the perturbation ones are of high precision for elastic collapsing of perforated casing.

Key words: perforated casing, elastic collapsing, reduction factor, perturbation method