基于插补原理的船体复杂曲面加热线布置方法

船体曲面成形技术是船舶加工过程中重要的环节。如何更好更快实现船体复杂曲面加工,一致以来备受国内外学者的关注。本文借鉴插补原理,对传统船体复杂曲面加热线布置进行了优化设计,得到了圆弧形板、s形板、帆形板和马鞍板的加热线。采用COMSOL Multiphysics多物理场仿真软件,分析四种加热线下钢板变形情况,并通过实验检验了插补形式下的船体曲面成形效果。结果表明：(1)插补算法得到的船体曲面加热线路程比传统加热线路程节约75%以上。(2)对有限元计算位移进行曲面拟合,得到的预测模型与实际船体曲面基本一致。(3)实验了四种曲面加热线,并将有限元预测位移与实验进行对比,二者误差在6%以内,有限元计算与实验结果基本吻合。该方法降低加工时间,提高加工效率。

Flame Fath Method of Hull Complex Surface Based on Interpolation Principle

The technology of hull surface forming is an important part in the process of ship manufacturing. It has been widely concerned by the scholars both domestic and abroad that about how to make the complex surface machining of ship hull better and faster than before. How to realize the complex surface machining of ship hull better and faster has been paid close attention to by scholars both at home and abroad. Based on the interpolation principle, this paper designs the hot wire layout of the traditional complex hull surface, and obtains the heating line of the arc plate, the s plate, the sail plate and the saddle plate. In this paper, COMSOL Multiphysics multi physics simulation software is used to simulate and analyze the deformation of steel plates under four heating lines, and The forming effect of the hull surface was tested by experiment. The results show: (1) The interpolation algorithm can save more than 75% of the total surface heating line distance compared with the traditional heating line. (2) Through surface fitting finite element calculating displacement, the real ship curve was basically the same as the prediction model. (3) Tested four heating lines and compared finite element predict displacement with experiment results, the error is within 12%, and the finite element calculation is consistent with the experimental results. The method not only improves the forming effect, and reduces the processing time, improve manufacturing efficiency.