航空发动机叶片冷辊轧过程本构模型  

Constitutive Model of Aviation Blade Cold Rolling Process

作　　者：王玮 耿文冉 孔祥伟[1] WANG Wei;GENG Wen-ran;KONG Xiang-wei(School of Mechanical Engineering ＆ Automation, Northeastern University, Liaoning Shenyang 110819, China;School of Automotive Studies, Tongji University, Shanghai 201804, China)

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110819 [2]同济大学汽车学院,上海201804

出　　处：《机械设计与制造》2018年第6期5-8,共4页Machinery Design & Manufacture

摘　　要：为了保证航空发动机叶片冷辊轧过程数值模拟的可信度,需要获得准确的材料本构模型。针对叶片辊轧过程大塑性变形,几何、材料、边界条件非线性的特点,通过对本构理论的研究,找到了适合于叶片辊轧过程的Yoshida-Uemori本构模型。为了确定本构模型中的材料参数,设计了叶片材料镍基变形高温合金GH4169在不同状态下的力学性能实验。通过实验所得数据,分析了GH4169合金的变形特点,确定了Yoshida-Uemori本构模型中的待定参数,并且发现GH4169合金在不同状态下的力学性能具有明显差异。The accurate material constitutive model is essential to ensure the reliability of the numerical simulation. Blade rolling is a process of large plastic deformation and the geometry,material and boundary conditions are all nonlinear. This paper finds out that the Yoshida-Uemori constitutive model is appropriate for blade rolling process according to the study on constitutive theory. The material of the blade is nickel-based superalloy GH4169. Mechanical property tests of GH4169 under different conditions at ambient temperature are performed to identify the material parameters of the constitutive model. The deformation characters of GH4169 are analyzed and the parameters are identified according to the test results.

关 键 词：叶片辊轧 镍基高温合金 本构模型 

分 类 号：TH16[机械工程—机械制造及自动化] TG335.19[金属学及工艺—金属压力加工]