Influence of allowable stress on structural design of ring-stiffened cylindrical shells

LI Sheng; WANG Zhiqiang; YIN Hong

doi:10.19693/j.issn.1673-3185.02239

Volume 17 Issue 1

Mar. 2022

Turn off MathJax

Article Contents

Article Navigation > Chinese Journal of Ship Research > 2022 > 17(1): 126-131

LI S, WANG Z Q, YIN H. Influence of allowable stress on structural design of ring-stiffened cylindrical shells[J]. Chinese Journal of Ship Research, 2022, 17(1): 126–131 doi: 10.19693/j.issn.1673-3185.02239

Citation:

PDF( 1473 KB)

Influence of allowable stress on structural design of ring-stiffened cylindrical shells

doi: 10.19693/j.issn.1673-3185.02239

1.
The Third Naval Military Representative Office at Wuhan District, Wuhan 430205, China
2.
Wuhan Second Ship Design and Research Institute, Wuhan 430205, China

Received Date: 2020-12-24
Accepted Date: 2021-12-29
Rev Recd Date: 2021-03-10

Available Online: 2022-02-26

Publish Date: 2022-03-02

Abstract

This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objective This paper aims to study the influences of different allowable stresses of ribs in cylindrical shell design. Methods To this end, this paper uses full factorial experimental design and information entropy method to establish a multi-objective optimization model of ring-stiffened cylindrical shells based on the weighted-sum method, then uses the tolerance ranking method to optimize the solution of the model. Through changing the safety factor of allowable stress of ribs, the influences of them on the uniformity of the attributes of the cylindrical shell are analyzed. Results The results show that the rib stress is the main constraint in design. When the safety factor of the allowable stress of ribs is 0.675, the margins of each attribute value are more uniform at about 15%, and the structural weight is relatively small at this time. Conclusions Therefore, properly extending the allowable stress can solve the problem being the main constraint in structural design, and make the margins of each attribute value of the optimal solution more uniform.
- ring-stiffened cylindrical shell,
- multi-objective optimization,
- weighted-sum method,
- tolerance ranking method

FullText(HTML)

References(11)

References

[1]	中国船舶工业总公司. 潜艇结构设计计算方法: GJB/Z 21–91 [S]. 北京: 国防科学技术工业委员会, 2001. China State Shipbuilding Corporation. Code for design and calculation of submarine structure: GJB/Z 21–91 [S]. Beijing: Commission of Science-Technology and Industry for Nation Defense, 2001 (in Chinese).
[2]	丁海旭, 沈永春. 用逼近目标规划模型进行潜艇耐压船体最佳设计[J]. 船舶力学, 2004, 8(2): 79–85. doi: 10.3969/j.issn.1007-7294.2004.02.011 DING H X, SHEN Y C. Approximate goal programming model for optimization design of submarine pressure hull structure[J]. Journal of Ship Mechanics, 2004, 8(2): 79–85 (in Chinese). doi: 10.3969/j.issn.1007-7294.2004.02.011
[3]	李学斌. 基于分枝定界法的环肋圆柱壳优化研究[J]. 船舶力学, 2008, 12(5): 793–798. doi: 10.3969/j.issn.1007-7294.2008.05.017 LI X B. Optimal design of ring-stiffened circular cylindrical shell based on branch and bound approach[J]. Journal of Ship Mechanics, 2008, 12(5): 793–798 (in Chinese). doi: 10.3969/j.issn.1007-7294.2008.05.017
[4]	潘治, 李学斌. 计及频率约束的潜艇环肋圆柱壳优化设计研究[J]. 舰船科学技术., 2009, 31(3): 21–24. PAN Z, LI X B. Optimization of ring-stiffened circular cylindrical shells with natural frequency constraint[J]. Ship Science and Technology, 2009, 31(3): 21–24 (in Chinese).
[5]	许辑平. 潜艇强度 [M]. 北京: 国防工业出版社, 1980. XU J P. Submarine strength [M]. Beijing: Defense Industry Press, 1980 (in Chinese).
[6]	郭亚军. 综合评价理论、方法及应用 [M]. 北京: 科学出版社, 2007. GUO Y J. Comprehensive evaluation theory, method and application [M]. Beijing: Science Press, 2007 (in Chinese).
[7]	闵亚能. 实验设计(DOE)应用指南 [M]. 北京: 机械工业出版社, 2011. MIN Y N. Application guide of design of experiment (DOE) [M]. Beijing: China Machine Press, 2011 (in Chinese).
[8]	中国船舶工业总公司. 船用钢板尺寸和重量: CB/T 3432-1992 [S]. 北京: 中国标准出版社, 1992. China State Shipbuilding Corporation. Size and weight of ship steel plate: CB/T 3432-1992 [S]. Beijing: China Standard Press, 1992 (in Chinese).
[9]	中国船舶工业总公司. 船用对称型钢尺寸、外形、重量及允许偏差: CB/T 3433-1992 [S]. 北京: 中国标准出版社, 1993. China State Shipbuilding Corporation. Marine section steel size, shape, weight and allowable deviation: CB/T 3433-1992 [S]. Beijing: China Standard Press, 1993 (in Chinese).
[10]	曾广武. 船舶结构优化设计 [M]. 武汉: 华中科技大学出版社, 2003. ZENG G W. Optimal design of ship structure [M]. Wuhan: Huazhong University of Science and Technology Press, 2003 (in Chinese).
[11]	DEB K, PRATAP A, AGARWAL S, et al. A fast and elitist multiobjective genetic algorithm NSGA-II[J]. IEEE Transactions on Evolutionary Computation, 2002, 6(2): 182–197. doi: 10.1109/4235.996017