三维等离子喷涂的涂层生长过程温度场数值模拟  

NUMERICAL SIMULATION OF TEMPERATURE FIELD IN FORMING PROCESS OF 3D PLASMA SPRAY COATING

作　　者：王桂兰[1] 胡帮友[1] 严波[1] 张海鸥[1] 

机构地区：[1]华中科技大学材料学院模具技术国家重点实验室,武汉430074

出　　处：《固体力学学报》2005年第2期151-156,共6页Chinese Journal of Solid Mechanics

基　　金：国家自然科学基金(50475134);国家八六三计划(2003AA305800)资助.

摘　　要：提出了一种基于法矢量的涂层单元生成生长算法,可以在通用CAE软件划分喷涂基体四面体单元基础上,在三维曲面的待喷涂表面生成涂层三棱柱单元.利用基体四面体单元和生成的涂层三棱柱单元,采用基于匀质化宏细观连成理论的温度场计算数学模型,模拟得到三维等离子喷涂涂层生长过程的温度场.In the plasma spray rapid tooling(RPST), 3D free curved surface is usually sprayed on, using metal powder which is heated and accelerated by a plasma jet, then beats on the substrate to form the spray coating with some porosity. An algorithm for creating prism elements of coating based on the outer normal vector is proposed. The substrate was divided into the tetrahedral elements by commercial CAE software, The temperature field in the 3D plasma sparay coating is simulated by using the homogenization mathematic model of temperature field on macro-micro scale, and the tetrahedral elements and the prism elements.

关 键 词：等离子喷涂 自由曲面 匀质化理论 温度场 数值模拟 

分 类 号：TG174.4[金属学及工艺—金属表面处理]