Numerical Simulation Method And Program Design Of Moving Heat Source

In the application of heat transfer,the heat source under the moving state is very common.In particular,when two objects interact with each other,the heat source is generated due to friction forces and transfer to each other.For example,the friction effect between the piston and the cylinder wall,the friction effect between the brake disc and brake pads,the interaction of the cutting tool and the workpiece during cutting.Moving heat source is so widely exited in contact friction components of the field of every mechanical industry,nuclear reactor,aerospace,railway,automobile,electric power industry et al.Therefore,it is necessary and urgent to study moving heat source.In this paper,the program finished by author is used to simulate the moving heat source,the transient temperature field and variation rule of temperature in two kinds of typical moving heat sources problem are studied.The main research contents are as follows:(1)The Galerkin method is used to discrete the governing differential equations changing the governing differential equation to finite element equations which could be solved numerically;then the method of multi load step are applied to deal with the element on the boundary of moving heat source,achieved the numerical simulation of the boundary of moving heat source.(2)The calculation program is developed with C++ language,and embedded the framework of finite element software platform,achieving the simulation of moving heat source finally.(3)Two typical kinds of moving heat source(interaction effect of thin plate,automobile brake)are selected to calculating,the postprocessing is handed in the FER/View software,the transient temperature field and variation rule of temperature of contact interface are studied,so as to confirming the validation of this algorithm.