The Analysis Of Thermo-Magneto-Elastic Stress And Deformation In The Thin Current-Carrying Column

Magneto-elasticity is a special subject, in which we investigate the interaction between the strain and electromagnetic fields in a solid elastic body. The research of mechanical field,electromagnetic and temperature fields coupling is based on the fruit of classical theory. If a elastic body placed in a strong initial magnetic field is moved by external loading, besides the strain field, there arises an electro- magnetic field. These two fields are coupled and interact with each other. The influence of the electromagnetic field on the strain occurs by means of Lorentz forces appearing in the equations of motion. The Ohm law contains a term descri-bing the increment of density of the electric field developing on the velocity of the material particles moving in the magnetic field. The temperature field is considered temperature with change by the heat of current bring. Based on the elasticity theory, the temperature field is impacted the strain field.Based on the current thin shell with nonlinear geometry equations, physical equation,magneto elasticity kinetic equations, and electrical kinetic equations and applied the heat transfer with theory basic formula, given out the temperature curve equation of monolayer wall with source of heat and integral characteristic number expression with temperature, the column thin shell with thermo-magnetic-elasticity equation by the action of electromagnetic field,temperature field and mechanical field is given out. Applying the variable transform and directrix character, the equations is transformed a sequence of quasi-linear differential equations. It can save and program by the orthogona discrete method. The numerical solution of the stress and deformation in the current column thin shell with different supported conditions were obtained and the relationship between the applied electromagnetic fields,temperature field and mechanical field coupling. The change law of the stress,deformation,temperature and other parameter with electromagnetic parameter were obtained. The numeration result and change law were analyzed. It was proved change the parameter of the electromagnetic fields can control the thermo-stress and thermo-strain of the current column thin shell.