毕业论文

当前位置: 毕业论文 > 外文文献 >

ANSYS的注射机感应加热温度场数值模拟英文文献和中文翻译

时间:2017-12-04 21:09来源:毕业论文
Abstract:A finite element model of temperature field coupled with electromagnetic field has been established based on induction heating theory including Maxwell s equations, thermal conductivity differential equation and magnetic vector pote
Abstract:A finite element model of temperature field coupled with electromagnetic field has been established based on induction heating theory including Maxwell ’ s equations, thermal conductivity differential equation and magnetic vector potential to simulate the induction heating process of barrel of injection molding machine by universal ANSYS software , and to obtain temperature field of the barrel related to time variation. The coupled thermal and electromagnetic field problem taking account of nonlinear materials characteristics related to temperature was discussed . The induction heating process of barrel was analyzed, and the temperature distribution and its variation
with time were obtained .16154
Introduction Introduction Introduction Introduction
Plastic injection molding is to inject the melt plastics into the mold, through cooling and curing
methods to form molding products. Barrel temperature of injection molding machine is an
important process parameters . At present, heating method of the barrel of the injection molding
machine is usually resistance heating which fix several resistance heating coils on the out-surface of
barrel, and the temperature of each heating coil can be independently controlled. This paper will
apply the induction heating tec hnology to injection molding machine. Induction heating has many
advantages, such as high heating speed, high barrel internal heating and heating efficiency, uniform
and selective heating, less environmental pollution, well-controlling, safety. Based on t he principle
of induction heating induced current (eddy current) distribution has skin effect in the barrel surface,
that is concentrated in a small range of barrel surface, the barrel temperature is going up by the
internal heat transfer. Induction heati ng is a complex physical process with coupling
electromagnetic field and temperature field. In the heating process magnetic permeability, electrical 源自六-维+论\文"网*加7位QQ3249.114 www.lwfree.cn
conductivity, specific heat capacity and other physical parameters of the barrel material will vary
with t emperature, and these factors in turn, will have an impact on the heating process. In addition,
injection molding machine of induction heating as compared to the present industrial application of
induction heating has its own features:(1) Barrel temperatu re is lower, generally around 200 ℃ ;(2)
Barrel heating time is longer, as the barrel temperature need high precision, in order to facilitate
temperature control, so barrel temperature must rise stably;(3) Lower heating power, lower
frequency and barrel temperature, higher precision of temp erature control and longer heating time
all require an inductor to have appropriate power and frequency. In summary, this paper that
analyzes and studies induction heating process of the barrel of injection molding machine using
ANSYS can optimize design parameters of inductor.
2 2 2 2 Governing Governing Governing Governing equations equations equations equations for for for for electromagnetic electromagnetic electromagnetic electromagnetic field field field field
2.1 2.1 2.1 2.1 Mathematical Mathematical Mathematical Mathematical model model model model of of of of magnetic magnetic magnetic magnetic field field field field
The governing equations for time varying magnetic field analysis can be derived from
Maxwell ’ s equations[1]:ANSYS software uses the method of the magnetic vector potential to calculate electromagnetic field
and eddy current field. Introducing , is the magnetic vector potential . When the B A = ∇×Where is the prescribed angular frequency. Eq.( 3 ) is the solution of eddy current field of ω
differential equations of the complex vector.
2.2 2.2 2.2 2.2 Mathematical Mathematical Mathematical Mathematical model model model model of of of of temperature temperature temperature temperature field field field field ANSYS的注射机感应加热温度场数值模拟英文文献和中文翻译:http://www.lwfree.cn/fanyi/20171204/17360.html
------分隔线----------------------------
推荐内容