Research on Simulation of Prestressed Steel Strand Induction Heating and Its Contact between Wires
Induction heating of prestressed steel strand is a complicated production process,so using multi-physics software to simulate the process can provide a basis for process optimization.In terms of geometry,it is difficult to determine the wire-to-wire contact conditions of the steel strand because of the productive continuity;in terms of physical field,induction heating is a strongly non-linear and coupled process which involves multiple fields.In view of the above situations,a 3D steel strand geometry model was established,which based on the two kinds of contact conditions between wires;non-linear materials'parameters were described,in which a numerical model of relative magnetic permeability with respect to temperature and magnetic flux density was particularly established;actual temperature data were measured.Whether to contact between the edges was determined,and the influence of the width of side wires contact surface on the heating effect was analyzed.The results show that side wires are in contact,and the actual temperature data is relatively consistent with the simulation results,which verifies the correctness of the simulation.
induction heatingfinite element analysismedium frequency electromagnetic fieldprestressed steel strandtemperature field
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