Development of procedure of bending plate block for ship building

本研究的目的是发展船舶用冲压成形曲面的方法，需要选择合适的冲压条件来冲压成形目标形状。因此，利用开发的压力分析工具，建立了固有变形和角变形数据库。另一方面，根据冲压时的目标固有应变分布的数据库计算水火弯板的加热和校正条件。为了验证该方法，进行了一系列的热弹塑性有限元分析，这是一种强非线性分析，其结果是，得到所需的曲线形状与三次校正加热。

The objective of this research is the development of the method to form the curved surface by pressing for the ship-building.It is necessary to select the appropriate pressing conditions to form the objective shape by pressing. Therefore, the database of inherent deformation and angular distortion is created by using the press analysis tools developed. On the other hand, the heating and correcting conditions of line heating is calculated from the database of the objective inherent strain distribution as the pressing. To verify this method, a series of the thermal-elastic-plastic finite element analysis, which is one of strongly non-liner analyses, is performed and the result is that the required curved shape is obtained with three times correcting heating.