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Dalian, China

Wu J.,Dalian University of Technology | Wang J.,Dalian University of Technology | Liu Y.,Dalian University of Technology | Liu Q.,Dalian University of Technology | Zhang L.,Technical Center
Proceedings of the International Offshore and Polar Engineering Conference | Year: 2014

A new technology, utilizing electromagnetic force to promote deformation of ship hull plate during line heating process, is called electromagnetic force assisted line heating (EFALH), which can improve efficiency and accuracy of plate deformation. Some key issues are solved in the numerical simulation of EFALH to study this technology and design processing parameters. These issues include implementing multi-physics coupling, establishing three-dimensional finite element model, and analyzing thermal boundary conditions. Optimization analysis of relation between the auxiliary effect of electromagnetic force and the temperature of steel plate is introduced, and main technological parameters for EFALH are designed, providing guidance for the experiment. Copyright © 2014 by the International Society of Offshore and Polar Engineers (ISOPE). Source


Wang J.,Dalian University of Technology | Liu Q.,Dalian University of Technology | Liu Y.,Dalian University of Technology | Shi B.,Dalian University of Technology | And 2 more authors.
Advanced Materials Research | Year: 2013

In the process of line heating, a pulsed electromagnetic force is added to steel plates as an approximately consecutive constrained force of certain frequency. It improves the condition of steel plates heated at high temperatures and the efficiency of steel deformation and be conducive to the control of process and the improvement for the accuracy of deformation. According to the actual needs of electromagnetic force assisted line heating process, the design ideas of circuit for the electromagnetic force assisted line heating device (EFALHD) and functions of the branch circuits are introduced. The distribution of the electromagnetic force and parameters' influence rules are analyzed by building magnetic field and circuit coupling model in ANSYS. By adding thermal analysis on the electromagnetic field analysis, a new method of line heating finite element analysis is established to support the parameter determinations of EFALHD. © (2013) Trans Tech Publications, Switzerland. Source

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