极地冰级对船体结构设计的影响研究

发布时间：2018-05-23 09:30

本文选题：极地冰级 + 船体结构　；参考：《大连理工大学》2015年硕士论文

【摘要】：对意欲航行于极地冰冻水域的船舶,IACS(国际船级社协会)发布了Polar Class(极地冰级)的统一要求规范。IACS极地冰级规范实际上包括三部分内容：极地冰级描述和应用、极地冰级船舶船体结构要求和极地冰级船舶轮机要求。本文研究目的是通过研究IACS极地冰级规范中关于极地冰级船舶船体结构的要求,掌握极地冰级规范对船体结构加强的要求,研发出IACS极地冰级船舶船体结构强度规范计算软件；同时初步研究IACS极地冰级规范对一型散货船船体结构设计的影响,掌握IACS极地冰级规范中有关的船体结构规范设计应用技术。本文主要研究内容及成果如下：(1)研究IACS极地冰级规范中关于极地冰级船舶船体结构要求,主要研究极地冰级规范对船体结构要求的原理和背景等。通过研究发现极地冰级船舶在冰区航行的中垂总弯矩的最大值会向艏前移,同时总剪力最大值也向首部前移。(2)从工程应用的角度,研发出IACS极地冰级船舶船体结构规范校核软件。此软件实现了如下七项功能：极地冰级船舶艏部和非艏部的冰载计算功能；型材库功能,可自动校核型材是否满足冰级的稳定性要求；型材实际净有效剪切面积和净有效塑性剖面模数计算功能；极地冰级船舶外板和骨材的冰级校核功能；主要支撑构件的冰载计算和稳定性校核功能；极地冰级总纵强度要求的计算功能；极地冰级计算报告输出功能。(3)应用自主研发的极地冰级船舶船体结构规范计算软件,研究PC7极地冰级对一型8万吨散货船船体结构的影响。发现常规商船如满足极地冰级规范的船体加强要求而不考虑结构优化设计时,直接满足IACS极地冰级规范要求的船体加强结构重量增加较多。例如对于一型8万吨级散货实船就可能会导致船体结构重量增加超过10%。同时也验证了满足PC7极地冰级的船舶基本可以满足IA冰级的要求,但反过来,满足IA冰级要求的船体结构设计是不满足PC7极地冰级要求的。
[Abstract]:For ships intending to sail in polar frozen waters, the IACS issued the uniform requirements for Polar Class.IACS Polar Ice Class Specification actually includes three parts: polar ice level description and application. Polar ice class ship hull structure requirements and polar ice class ship turbine requirements. The purpose of this paper is to study the requirements of polar ice class ship hull structure in IACS Polar Ice Class Code, master the requirements of polar ice class specification for hull structure strengthening, and develop the IACS Arctic Ice Class ship Hull strength Code calculation software. At the same time, the influence of IACS polar ice level code on the hull structure design of a type of bulk carrier is preliminarily studied, and the design and application technology of the hull structure code related to the IACS polar ice level code is grasped. The main contents and results of this paper are as follows: (1) the requirements of polar ice class ship hull structure in IACS polar ice class code are studied, and the principle and background of polar ice class specification for hull structure requirements are studied. It is found that the maximum vertical moment of polar ice class ships navigating in the ice area will move forward to the bow, and the maximum value of the total shear force will also move forward to the head. 2) from the point of view of engineering application, The software of IACS polar ice class ship hull structure standard checking is developed. The software realizes the following seven functions: the ice load calculation function of polar ice class ship bow and non-bow, the function of profile library, the automatic checking of whether the profile meets the requirements of ice class stability; The actual net effective shear area and the net effective plastic profile modulus calculation function; the ice level checking function of polar ice class ship outer plate and bone; the ice load calculation and stability checking function of main supporting member; The function of calculating the total longitudinal strength of polar ice level and the output function of polar ice level calculation report. 3) the influence of PC7 polar ice level on the hull structure of a 80000 ton bulk carrier is studied by using the software developed by ourselves for calculating the hull structure of polar ice class ships. It is found that when conventional merchant ships meet the hull strengthening requirements of polar ice level code without consideration of structural optimization design, the weight of hull stiffening structures that directly meet the requirements of IACS polar ice level code increases more. For example, for a type of 80,000-ton bulk cargo ship, the weight of the hull structure may increase by more than 10. At the same time, it is verified that ships meeting the PC7 polar ice level can basically meet the requirements of IA ice class, but in turn, the hull structure design that meets the IA ice level requirement is not satisfied with the PC7 polar ice level requirement.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U663.2

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