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Mechanics in Engineering ›› 2015, Vol. 37 ›› Issue (4): 508-512.doi: 10.6052/1000-0879-14-282

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BUCKLING ANALYSIS OF THIN-WALLED CYLINDER UNDER LOCAL RADIAL LOADS AND EXTERNAL PRESSURE

CHAI Wei1, WANG Chuanzhi2, DONG Junhua1, GAO Bingjun1   

  1. 1. School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China;
    2. Beijing Yanhua Construction Engineering Equipment Manufacture Co., Ltd., Equipment Manufacturing Company, Beijing 102502, China
  • Received:2014-08-22 Revised:2014-11-01 Online:2015-08-15 Published:2015-08-25

Abstract:

In order to simplify the local buckling analysis of vacuum towers with outside suspensions, a reduced mechanical model is built for the buckling analysis of a thin-walled cylinder under local radial load and external pressure. Pop cans are used as the thin-walled cylinder specimen. Local radial critical loads are measured under different external pressures. The eigenvalue buckling analysis is used to determine the local radial critical load of the specimen,which agrees well with the experimental result. With the orthogonal design method,an empirical formula for the local radial critical load is obtained by the parametric eigenvalue buckling analysis. Verification example indicates that the empirical formula yields slightly conservative results, which may be used for the local buckling analysis of vacuum tower with outside suspensions.

Key words:

local radial critical load|external pressure|thin-walled cylinder|buckling|stability

CLC Number: 

  • TH114