VLCC船首外飘结构冲击及砰击强度

张荣鑫

doi:10.16411/j.cnki.issn1006-7736.2019.04.004

大连海事大学学报 >

2019 , Vol. 45 >Issue 4: 20 - 25

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2019.04.004

船舶与海洋工程

VLCC船首外飘结构冲击及砰击强度

张荣鑫

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（中国船级社大连分社，辽宁大连，116013）

张荣鑫(1976 — )，男，博士，高级工程师，E-mail：rxzhang@ccs.org.cn.

收稿日期: 2019-04-19

修回日期: 2019-07-11

网络出版日期: 2019-07-11

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Impact and slamming strength of VLCC bow flare structure

ZHANG Rong-xin

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（China Classification Society，Dalian Branch,Dalian 116013,China）

Received date: 2019-04-19

Revised date: 2019-07-11

Online published: 2019-07-11

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摘要

现有CSR规范仅考虑了冲击压力对VLCC船首外飘结构的影响而忽略了砰击压力的影响,使得具有较大船首外飘结构的VLCC常由于遭遇较大波浪载荷而受损.本文借鉴CSR规范载荷体系提出两种冲击压力的假设,并结合实船案例数据,采用有限元法对受损结构进行逆向工程计算,采用最小二乘法分析实验数据以寻求最优解.最后,利用最佳方案对损坏结构提出修改方案并验证.本文的研究结果可为超大型油船的结构设计提供思路.

关键词： 超大型油船(VLCC); 船首外飘结构; 冲击压力; 砰击压力; 逆向工程; 有限元法

本文引用格式

张荣鑫 . VLCC船首外飘结构冲击及砰击强度[J]. 大连海事大学学报, 2019 , 45(4) : 20 -25 . DOI: 10.16411/j.cnki.issn1006-7736.2019.04.004

Abstract

Current CSR codes only consider the influence of impact pressure on the bow flare structure of VLCC bow,but neglect the impact of slamming pressure.As a result, VLCC with large bow flare structure was often damaged by large wave loads. In this paper,two kinds of impact pressures were proposed based on the CSR code load system, the reverse engineering calculation was carried out by using the finite element method for damage structures by combining with real ship case data，and the least square method was used to analyze the experimental data to search for the optimal solution.Finally,according to the best scheme
,the modification scheme of damaged structure was proposed and verified.The results can provide help for the structural design of VLCC.

Key words： very large crude carrier(VLCC); bow flare structure; impact pressure; slamming pressure; reverse engineering; finite element method

参考文献

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