【作者】 周波；

【导师】 冷建兴； 魏艳；

【作者基本信息】 浙江大学 ， 船舶与海洋结构物设计制造， 2014， 硕士

【摘要】 我国是造船大国,现代造船模式要求造船企业实现均衡、快速的总装造船。但是我国造船企业仍然依靠廉价的劳动力和经验进行生产管理,难以对生产过程进行动态监控。多订单生产情况下无法合理安排相应的生产任务,对制约船舶生产的关键环节无法找到最优的解决方案,无法对生产过程中设备的利用率、生产瓶颈进行统计分析,生产计划的制定无法综合考虑各种突发因素的耦合作用。船舶建造流程的虚拟仿真运用流程再造技术在计算机上模拟现实的船舶生产流程,可以在不消耗任何实际生产资源的情况下对生产情况进行预测和模拟,对生产计划的制定进行指导,对多订单任务的加工顺序进行排程优化,找到使生产时间最短的加工顺序,同时对船舶分段装焊车间装配件配送系统进行仿真优化,解决制约船舶生产效率的关键问题。本文基于Plant-Simulation软件和SimTalk语言对国内某船厂的船舶建造流程进行建模和仿真,做了如下的工作。1.对国内外虚拟仿真技术的发展做了详细的调研和阐述,对虚拟仿真技术在船舶生产领域的运用做了介绍。分析了现代造船模式对我国造船企业的要求。2.将复杂的船舶生产流程分成若干个关键大节点,包括钢料堆场、钢材预处理、分段装焊、涂装、船坞合拢。对钢料堆场、钢材预处理中心、分段装焊、船坞合拢概括出了关键的生产工艺原则和主要节点,介绍了生产数据采集的方法。3.构建了主要的建模对象,运用参数化建模手段基于Plant-Simulation平台构建能实现实际生产状况的物理模型。编写相应的控制算法实现物理模型的运动,开发统一的用户交互式控制界面,实现对虚拟建造流程的观察和参数修改。4.对分段装焊车间和钢材预处理中心进行了特定生产任务的验证,验证生产计划的合理性,基于遗传算法对平面分段生产的多任务进行了排程优化,并对船舶分段装焊车间物料配送系统进行了仿真与优化,并利用多次组合配比试验,找到物料配送系统的最优参数设置。更多还原

【Abstract】 China is a shipbuilding country. Modern shipbuilding mode requires shipbuilding enterprises to achieve balanced, rapid assembly shipbuilding. But our shipbuilding enterprises still rely on cheap labor and experience in production management. Production plan formulation is also given priority to with experience. It’s still hard to carry on the dynamic monitoring about the production process. Also, can’t reasonability arrange production orders under much production tasks. It is unable to find the optimal solution for the key link to restrict ship production. It’s also a problem to statistics the utilization rate of equipment and the production bottleneck in the process of production. The production plan unable to comprehensively consider the coupling effect of various sudden factorsShip construction process of virtual simulation technology using process reengineering technology to simulation the real ship production process in computer, which can realize the function of prediction and simulation of production does not consume any actual resources, to play a guiding role for making the production plan, optimizing the task order of multiple production tasks to find the shortest production time sequence, and optimizing the ship manufacturing workshop assembly parts transportation system to solve the key problems that influence efficiency of shipbuilding.This article is based on Plant-Simulation software and the SimTalk language, modeling and Simulating ship building process about a shipyard in domestic, do the following work.1. Making a detailed research and the elaboration about the development of virtual simulation technology at home and abroad, the virtual simulation technology used in the field of ship’s production is also presented. This article analyzes the modern shipbuilding mode to the influence of the shipbuilding enterprises in our country. 2. Dividing the ship manufacturing process of complex into a number of key nodes, including steel material yard, steel pretreatment, ship blocks manufacturing, coating, dock fold. Summarizing the key production technology principle and main node about the steel material yard, steel pretreatment center, ship blocks fabrication and dockyard fabrication. This paper introduces the methods of production data acquisition.3. Build the main modeling objects, by means of parametric modeling to build physical model which can realize the actual production conditions on Plant Simulation platform. Write the corresponding control algorithm to realize the physical model of the movement. Developing a unified user interactive control interface to realize the observation of the virtual construction process and parameters modified.4. Make a validation about the specific production tasks in steel pretreatment center and ship blocks manufacturing workshop, which means to validate the production plane is whether reasonable. Optimize the production orders of panel blocks production under multiple tasks based on the genetic algorithm. Carried on the simulation and optimization about the ship section workshop material transport system, and by using multiple combination tests to find the optimal parameter settings about the material transport system.更多还原