Computer aided precision cotrol in shipbuilding based on simulation

焊接结构的精度控制一直是焊接结构制造过程中的一个重要环节。然而，传统的方法在很大程度上依赖于经验，没有明确的理论基础。此外，对过程中观察到的误差的分析仅限于每个过程。精度问题没有作为一个涉及许多过程及其接口的整体问题来分析。因此，制造过程分为切割、弯曲和焊接，并在研究项目的第一年开发了理论和有限元代码来分析各个过程。然后，从第二年整个制造过程的角度出发，研究了将这些因素结合在一起进行系统精度控制的基本准则。一般来说，制造业的城市，比如建筑码头，和计算机模拟在本质上是完全不同的，在这些领域工作的人很难相互理解。要引入计算机仿真，需要制造与计算机之间良好的接口。在本研究中，提出了战略模型和概念模型作为这样的接口。通过各种应用实例证明了它们的有效性。

The control of precision has been an important part of the manufacturing process of welded structures. However, conventional methods were largely dependent on experience and they did not have clear theoretical bases. Also, the analysis of the error observed in the process is limited within each process. The problem of precision is not analyzed as an overall problem which involves many processes and their interfaces.Thus, the manufacturing process is divided into cutting, bending and welding and theories and finite elemnt codes to analyzed the individual process are developed in the first year of the research project. Then, fundamental guideline to combine these for making a system to control the precision is studied from the point of view of the total manufacturing process in the second year.Generally, manufacturing cites, such as building dock, and computer simulations are entirely different in nature and it is very difficult to make mutual understanding between people working in these sections. To introduce computer simulation, good interface is necessary between menufacturing and Computers. In this research, strategic and conceptual modellings are proposed as such interfaces. Their effectiveness is demonstrated using various examples of applications.