Research on ship-hull plate's curve forming by means of line heating with variable velocity

Liang Qi, Tianbo Li, W. Mao, Ping Yang
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引用次数: 1

Abstract

Line heating (LH) technology is the main process mode in ship-hull plate's curve forming. Generally, operators implement LH process with constant velocity which is easy and convenient to realise. However, phenomenon of 'non-uniform deformation' is easily generated along heating path. The paper studies the root of the phenomenon and puts forth a new kind of LH technology with variable velocity. Internal relationship between temperature field and deformation field under the new technology is studied by numerical simulations. Simulation results show that the new technology can alleviate negative effects of the phenomenon effectively.
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变速线加热成形船体板曲线的研究
线加热技术是船体板曲线成形的主要工艺方式。一般情况下,操作人员采用等速执行LH过程,易于实现。然而,沿加热路径容易产生“不均匀变形”现象。本文研究了这一现象的根源,提出了一种新的变速LH技术。通过数值模拟研究了新工艺下温度场与变形场的内在关系。仿真结果表明,新技术可以有效地缓解该现象的负面影响。
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