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

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.