Curvature Analysis Method for Ship-Hull Plate Forming
Curvature Analysis Method for Ship-Hull Plate Forming
复制标题
DOI：
--
复制
发表时间：
2005-05
期刊：
影响因子：
--
通讯作者：
Zhang Xue-biao;J. Zhuoshang;L. Yujun
中科院分区：
文献类型：
--
作者：
Zhang Xue-biao;J. Zhuoshang;L. Yujun
采用线材加热成形船体板材，需要艰苦而熟练的劳动。最初，通过滚动使板材在一个方向上弯曲。然后，将曲板输送到线材加热车间，以获得所需的收缩。然而，这种两步成形会导致一系列问题。提出了一种利用曲率分析将两步成形转化为线加热成形的方法。从偏移量数据可以直接计算出成形板材的主曲率。主曲率分布提供了有关变形分布和加热线的信息。沿线加热将导致均匀的弯曲角变形。提出了一种确定产生所需弯曲角的加热线的数值方法。这种加热线不需要调整线加热的参数。有利于温度控制，便于板材自动成形。
Ship-hull plate forming by line heating requires hard and skillful labor. Initially, the plate is curved in one direction by rolling. Then, the curved plate is transported to the line-heating workshop to obtain the required shrinkage. However, this two-step forming leads to a series of problems. This paper presents a method to change the two-step forming into line-heating forming by using curvature analysis. The principal curvatures of the formed plate can be calculated directly from the offset data. The principal curvature distribution provides information on the deformation distribution and the heating lines. Heating along a line will result in a uniform bending angular deformation. A numerical method to determine the heating lines to produce the required bending angle is presented. This kind of heating line does not require adjustment of parameters in line heating. It would benefit temperature control and facilitate plate forming automatically.