Development of Simulator for Line Heating Process Based on Knowledge of Skilled Worker

基于熟练工人知识的线加热过程模拟器的开发

基本信息

批准号：
14350523
负责人：
TERASAKI Toshio
金额：
$ 3.46万
依托单位：
Kyusyu Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

We investigated the knowledge of workers doing line heating process in the ship building field and arranged the factors related to the line heating conditions used for making the transverse shrinkage, the angular distortion and the torsional deflection. Moreover, we surveyed many papers which dealt between the deformations and the heating conditions of the line heating process by the technology. It becomes clear that the technology of the line heating process does not exist, but only the skill exists. So we focused on the bowl shape and the saddle shape representing the line heating process, and developed the simulator for line heating process based on the knowledge of skilled worker, namely, studied by the torus model based on the differential geometry. It was made clear that the transverse shrinkage was much important to make the bowl and the saddle shapes. For the bowl shape, the transverse shrinkage distribution must be the ratio of 1:3:5:7:10 from the middle point of plate width t … More o the edge of plate width. This fact obtained from the differential geometry agreed with the knowledge of the skill workers who used as triangle heating. For the saddle shape, the transverse shrinkage distribution was given by the technology based on the differential geometry. This fact also agreed with the knowledge of the skill workers who used as diamond heating. We proposed the similarity law of the plate sizes and the heat source. When the similarity law is proved in the line heating process, the plate size of 14m can change the plate size of 500mm, which can be used in the laboratory. The important point is the similarity law of heating source. We can use the laser as small heat source, then the laser forming was used for proving the theory of the similarity law. Moreover, we developed the numerical method for predicting the line heating process. We had the necessary tools for developing the simulator, but did not enough. It becomes clear how we decide the transverse distributions for making the purpose shape which is the part of ship shell. We need the knowledge of other skill worker which makes the shell expansion plan from the ship shell. This knowledge gives the positions and the values of transverse shrinkage, and is an implicit knowledge in each ship company. We tried to make from the implicitness to the technology. We succeed to predict the expansion plan from the torus model. However, our research does not reach the final goal of making the ship shell. When this technology completes, the simulator will have to complete. The important points are the positions and the values of transverse shrinkage. Less

我们调查了造船领域进行线加热工艺的工人的知识，并整理了与用于产生横向收缩、角变形和扭转挠度的线加热条件相关的因素，此外，我们还调查了许多涉及两者之间的论文。线加热工艺的变形和加热条件很明显，线加热工艺的技术并不存在，而只有技巧存在，所以我们重点关注代表线加热的碗形和马鞍形。过程，并开发了基于技术人员知识的线加热过程模拟器，即通过基于微分几何的环面模型进行研究，明确了横向收缩对于制造碗形和鞍形形状非常重要。，从板宽的中点到板宽的边缘，横向收缩率分布必须是1：3：5：7：10的比例，这一从微分几何中得到的事实与技术知识一致。工人用作三角加热。鞍形形状、横向收缩分布是由基于微分几何的技术给出的，这一事实也与我们提出的板尺寸和热源的相似定律相一致。当在线加热过程中证明相似定律时，14m的板尺寸可以改变500mm的板尺寸，这可以在实验室中使用，重要的一点是加热源的相似定律我们可以使用激光作为。热源小，则激光成型此外，我们开发了用于预测生产线加热过程的数值方法。我们拥有开发模拟器所需的工具，但还不清楚如何确定横向分布。目的形状是船壳的一部分，我们需要其他技术人员的知识来从船壳制作船壳展开图，这个知识给出了横向收缩的位置和数值，是隐性知识。各船公司都力图做到从含蓄到。我们成功地从环面模型中预测了扩展计划，但是，我们的研究并没有达到制造船壳的最终目标。当这项技术完成时，模拟器必须完成的就是位置和位置。横向收缩率值较小。