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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:Yi-Ming Zhou,Bo Wang,Geng-Dong Cheng.Shape Optimization of Pressure Vessel Head Based on the Super-ellipse Equation[J].Journal of Harbin Institute Of Technology(New Series),2013,20(4):52-62.DOI:10.11916/j.issn.1005-9113.2013.04.010.
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Shape Optimization of Pressure Vessel Head Based on the Super-ellipse Equation
Author NameAffiliation
Yi-Ming Zhou State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023,China 
Bo Wang State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023,China 
Geng-Dong Cheng State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023,China 
Abstract:
This paper studies optimal shape design of pressure vessel head subject to internal uniform pressure. The optimization aims at minimizing its maximum stress while the volume of the vessel head remains no less than the standard ellipsoidal head. Super-ellipse curve is selected to describe the middle surface shape of the vessel head because it represents a large family of curves with only two or three parameters and makes the design and manufacture easy. The performance of different elements and element sizes of FEM modeling is carefully studied in view of computational cost, accuracy and noises of von Mises stress. The response surface of the maximum stress vs. shape design parameters is approximated by a Kriging surrogate model with EI criterion for sampling adding, based on the parameter optimization which is carried out to search the optimal shape. Finally, it is shown by numerical comparison that the super-ellipsoidal head is better than the standard ellipsoidal head and the other vessel heads in the literature.
Key words:  shape optimization  super-ellipse function  Kriging  pressure vessel head  sampling criterion
DOI：10.11916/j.issn.1005-9113.2013.04.010
Clc Number:O342
Fund:

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