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Study on the Strength for the Cylindrical Shell under the Nonuniform Loading

Author: YaoWen
Tutor: WangXiaoTian
School: Harbin Engineering University
Course: Design and manufacture of ships and marine structures
Keywords: Non - uniform load Cylindrical Shell Structure Stability Optimal Design Double - arc transition section
CLC: U661.4
Type: Master's thesis
Year: 2007
Downloads: 194
Quote: 0
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Abstract


Cylindrical shells in ship and marine engineering structures more and more widely used, but due to the diversification of the external load , so that the stress intensity and stability analysis of the cylindrical shell structure is still a research topic with important practical significance . In this paper, the cylindrical shell in a variety of non-uniform loads , as well as the transition section of different diameter cylindrical shell structure type , stress strength and stability analysis and research , combined with the general - purpose finite element software ANSYS modeling the cylindrical shell structure calculation and comparative analysis . The main work is as follows: 1) theoretical understanding and analysis of cylindrical shells in a variety of non-uniform load stability theory . 2) various uniform external pressure ring stiffened cylindrical shell stability theoretical analysis, come to the law of the stability characteristics of the ring-stiffened cylindrical shells under various uniform external pressure , and draw with the geometric parameters of stability curve . 3) According to various uniform external pressure ring-stiffened cylindrical shell stability law , the establishment of the optimal design method different from the traditional design process , and theoretical analysis of the correctness of the optimization design method . 4 ) the establishment of the Moment cylindrical shell finite element model of the structure and computational analysis software ANSYS multi- point constraints to establish a rigid area , the stability of the eigenvalue analysis . Moment stability of cylindrical shells applicability of the existing calculation method for actual projects to rocking moments cylindrical shell structure design provides a theoretical basis . 5 ) Analysis of different diameter cylindrical shell transition section structure type , the double arc transition section structure type , and structure of the stress intensity analysis .

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CLC: > Transportation > Waterway transport > Marine Engineering > Ship Principle > Ship structural mechanics
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