Journal of Shanghai Jiao Tong University ›› 2016, Vol. 50 ›› Issue (03): 431-436.

Previous Articles     Next Articles

Geometric Correction Method for Shell’s Stability of Ring-Stiffened Concave Cone-ToroidCylinder Combined Shel

ZHANG Er1,WU Fan1,MAO Kairen1,WU Chunfang2   

  1. (1. Naval Architecture Engineering, Naval University of Engineering, Wuhan 430033, China; 2. Wuhan Institute of Shipbuilding Technology, Wuhan 430050, China)
  • Received:2015-05-18 Online:2016-03-28 Published:2016-03-28

Abstract: Abstract: The ringstiffened concave conetoroidcylinder combined shell is a new joint structure. The shape of geometric imperfection and location of the joint was analyzed and the typical imperfection which had the greatest impact was calculated by using finite element simulation to study the method of correcting shell’s stability. Besides, the effect of structural parameters on geometric correction coefficient Cg was analyzed by conducting singlefactor numerical experiment. It is found that the Cg of cone which is next to the toroid has a different relationship with structural parameters compared with that of common cone. The method to calculate Cg is proved to be very precise, which justifies that it can be used in engineering calculation.

Key words: Key words: concave cone-toroid-cylinder combined shell, geometric imperfection, stability, geometric correction coefficient

CLC Number: