Development of procedure of bending plate block for ship building

本研究的目的是开发造船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客观形状。为此，利用所开发的压力机分析工具，建立了压力机固有变形和角变形数据库。另一方面，根据压力机的客观固有应变分布数据库，计算出线加热的加热和修正条件。为了验证该方法的有效性，进行了一系列的热弹塑性有限元分析，结果表明，经过三次校正加热后，得到了所需的曲面形状。

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.