共查询到19条相似文献,搜索用时 176 毫秒
1.
通过对钢材利用率与造船成本之间关系的阐述,提出了钢材利用率研究的重要意义。对船舶设计过程中影响钢材利用率的六个方面因素的深入研究,总结了在设计过程中提高钢材利用率的措施。 相似文献
2.
3.
4.
5.
造船企业是用钢大户,钢材在生产成本中所占的比例自然不言而喻。如何减少钢材的浪费,提高钢材的利用率一直是造船企业关注重点。在节约成本、提高效益方面,企业各个职能部门都可大有作为。放样部门作为公司钢材配发主要责任部门,自然可以发挥自身的技术优势,帮助企业从源头上减少钢材的浪费现象,提高钢材利用率。本文结合工作实践对此作了简要论述。 相似文献
6.
降低船用钢材消耗,提高钢材利用率的重要意义已日益被人们所重视。提高钢材利用率可降低造船成本、促进管理及改造、提高竞争能力。据统计,原材料占总成本的比例为: 相似文献
7.
8.
10.
超大型集装箱船上的特种钢板工艺研究 总被引:1,自引:0,他引:1
在超大型集装箱船的布置、结构特点的基础上,对高强度厚钢板的施工工艺进行重点介绍。详细描述了生产设备、钢材选用、焊接工艺及工艺优化等,为生产成本的控制、生产效率的提高提供了明确的思路。 相似文献
11.
12.
13.
14.
15.
16.
The research study proposes to examine a three-dimensional visualization program, emphasizing on improving genetic algorithms through the optimization of a layout design-based standard and discrete shipbuilding workshop. By utilizing a steel processing workshop as an example, the principle of minimum logistic costs will be implemented to obtain an ideological equipment layout, and a mathematical model. The objectiveness is to minimize the total necessary distance traveled between machines. An improved control operator is implemented to improve the iterative efficiency of the genetic algorithm, and yield relevant parameters. The Computer Aided Tri-Dimensional Interface Application (CATIA) software is applied to establish the manufacturing resource base and parametric model of the steel processing workshop. Based on the results of optimized planar logistics, a visual parametric model of the steel processing workshop is constructed, and qualitative and quantitative adjustments then are applied to the model. The method for evaluating the results of the layout is subsequently established through the utilization of AHP. In order to provide a mode of reference to the optimization and layout of the digitalized production workshop, the optimized discrete production workshop will possess a certain level of practical significance. 相似文献
17.
18.
基于对环渤海地区天然气消费现状和供应格局的分析,指出环渤海地区海运进口液化天然气(LNG)在冬季需求集中、LNG泊位淡旺季利用不均衡等运输特点。根据区域LNG运输特点和现状泊位利用率情况,进一步分淡、旺季对LNG泊位利用率进行了细化研究。结合沿海LNG船型发展现状及发展趋势,对LNG泊位通过能力计算参数进行设计。在此基础上测算出近中期环渤海地区LNG接收站泊位通过能力达500万~550万t较为合理,并提出未来泊位能力挖潜方向。研究结论可对区域LNG相关港口规划和设计工作提供参考依据。 相似文献
19.
Philippe Rigo 《Marine Structures》2001,14(6):611-629
The development of the LBR-5 “Stiffened Panels Software” is included in the development of a new design methodology to ease and to improve preliminary studies of naval structures and floating hydraulic structures. The ultimate target is to link standard design tools (steel structure CAD, hull form, hydrostatic curves, floating stability, weight estimation, etc.) with a rational optimization design module and a minimum construction cost (or minimum weight) objective function. This paper is the first part of a series of two articles. It focuses on the ‘Module-Oriented Optimization’ methodology and on the rational constraints. The second paper presents the optimization technique using convex linearization and a dual approach, and the optimization of an FSO unit as an example (Rigo and Fleury, Marine Stuructures, 2001). LBR-5 allows, as of the first draft, an optimization of the scantling of the structure's constituent elements. Relevant limit states of the structure are taken into account thanks to a 3D rational analysis of the structure based on the general rules of solid-mechanics and structure behaviour. The optimization module is composed of 3 basic modules (OPTI, CONSTRAINT and COST) and a group of sub-modules (in external databases). Among these the user selects a set of relevant sub-modules (i.e. geometrical and structural constraints). Since the present optimization deals with least construction costs (as objective function), and uses an explicit objective function (not empirical), the user must specify labor costs (unitary material costs, welding, cutting, etc.). 相似文献