【摘要】 文章在基于异型坯炉内热过程分析的基础上,推导基于伽辽金法的钢坯在第二类边界条件及辐射边界条件下的二维导热过程有限元方程。采用C#编制了基于推进波前法(AFT)的三角形自动网格生成代码。通过引入假想面,采用总括热吸收率法处理了异型坯的复杂边界。分析了典型工况下异型坯的加热过程,讨论了产量变化对异型坯加热过程的影响。研究成果对异型坯加热制度的制定及异型坯生产过程在线监控具有一定的参考价值。更多还原

【Abstract】 Based on the analysis of beam blank’s heat process in reheating furnace,the finite element equation for two-dimensional thermal conduction of steel slabs were deduced through the Galerkin method under the second boundary condition and radiation boundary condition. The code by adoption the advancing front method( AFT) was developed by using C#,and it can generate the triangle finite element mesh automatically. The imaginary plane was introduced to deal with the complex boundary conditions of the beam blank,and furthermore,total heat exchange factor was adopted to simplify boundary heat flux. The heating process of the beam blank under typical working condition was analyzed and the influences of the yield variation on the heating process of the beam blank were discussed.The research results have certain reference value for the determination to make thermal schedule of beam blank and on-line supervisory control of the production process.更多还原