由于“奋力号”打捞船的用途特殊、自带开底月池且L/B>5及B/D≤2.5,已不满足采用规范公式计算波浪载荷的条件,故需进一步用直接计算的方法确定其波浪载荷。以“奋力号”为例,简要介绍利用三维频域线性水动力计算软件SESAM,计算“奋力号”在调遣和工作工况时,波浪弯矩和波浪剪力的长期及短期预报值,并与规范公式计算的波浪弯矩剪力值进行对比,为后续“奋力号”全船结构强度有限元分析中波浪载荷的施加提供依据。
Due to the special use of the salvage vessel Fenlihao, which has a self-contained open bottom moon pool and L/B>5 and B/D≤2.5, it no longer meets the conditions for calculating wave loads using standard formulas. Therefore, it is necessary to further determine its wave loads using direct calculation methods. This paper takes the Fenlihao as an example to briefly introduce the use of the three-dimensional frequency domain linear hydrodynamic calculation software SESAM to calculate the long-term and short-term forecast values of wave bending moment and wave shear force of the Fenlihao in dispatch and work conditions, and compares them with the wave bending moment and shear force values calculated by the standard formula, providing a basis for the application of wave loads in the subsequent finite element analysis of the overall structural strength of the Fenlihao.
2024,46(8): 81-87 收稿日期:2023-5-11
DOI:10.3404/j.issn.1672-7649.2024.08.015
分类号:U663.4
基金项目:浙江省自然科学基金资助项目( LTGG23E090003)
作者简介:刘在良(1976-),男,硕士,教授,研究方向为船舶与海洋结构物设计制造
参考文献:
[1] 戴佳莉, 陈新权, 杨启. 超大型双体船运动响应与波浪载荷研究[J]. 舰船科学术, 2020, 42(9): 30-35.
DAI Jia-li, CHEN Xin-quan, YANG Qi. Research on motion response and wave load of Super large catamaran[J]. Ship Science and Technology, 2020, 42(17): 30-35.
[2] 康哲, 陈涛, 刘乐乐. 深水钻井船波浪载荷研究及总强度分析[J]. 舰船科学术, 2022, 44(3): 82-88.
KANG Zhe, CHEN Tao, LIU Le-le. Research on wave load and total strength of deep-sea drilling ship[J]. Ship Science and Technology, 2022, 44(3): 82-88.
[3] 徐田甜, 张美荣. 深水FPSO总纵强度分析和结构设计[J]. 船海工程, 2022, 15(5): 117-125.
[4] 贺俊松, 彭文科. 船舶波浪载荷短期极值的经验公式. 中国造船[J], 2011, 52(2):75-80.
[5] 汪雪良, 顾学康, 祁恩荣, 等. 船舶波浪载荷预报方法和模型试验研究综述[J]. 舰船科学技术, 2008, 30(6): 20-28.
WANG Xue-liang, GU Xue-kang, QI En-rong, et al. A state-of-the-art review on study of prediction methods and model test of wave-induced loads of vessels[J]. Ship Science and Technology, 2008, 30(6): 20-28.
[6] 中国船级社. 钢制海船入级规范[S]. 2020.
[7] 焦甲龙, 张皓, 陈远明, 等. 长峰与短峰不规则波对船舶运动与波浪载荷的影响分析[J]. 中国舰船研究, 2023, 18(1): 107-115.
[8] 唐松. 船舶短期波浪载荷预报及概率特性研究[D]. 杭州:中国计量学院, 2014.
[9] 罗慧明, 陈亮亮, 邓建通, 等. 扁平船舶波浪载荷预报研究[J]. 船舶工程, 2016, 38(5):1-4.