镍基单晶合金热弹塑性应力-应变场数值模拟  

Numerical Simulation of Thermo Elastic-Plastic Stress-Strain for Single Crystal Nickel-Based Superalloy

作　　者：丁智平[1] 陈吉平[1] 

机构地区：[1]湖南工业大学机械工程学院,湖南株洲412008

出　　处：《湖南工业大学学报》2007年第6期31-35,共5页Journal of Hunan University of Technology

基　　金：湖南省自然科学基金资助项目(02JJY5014);湖南省教育厅基金资助重点项目(05A047)

摘　　要：利用ANSYS有限元结构分析软件的参数化设计语言APDL和用户可编程特性UPFs,将考虑拉-剪耦合效应的镍基单晶合金屈服准则和弹塑性本构模型集成到ANSYS软件中,实现对镍基单晶合金弹塑性有限元应力-应变场的分析。对温度为680℃的[001]、[011]和[111]3种取向的DD3镍基单晶合金试样进行单向拉伸热弹塑性应力-应变数值模拟,并与试验数据进行对比,最后,对单晶涡轮盘片进行循环应力应变分析。　Based on the yield criterion and constitutive model of taking into account the effects that the components of tension stresses couple with components of torsional stresses for single crystal Nickel-based superalloya,subroutine to calculating the thermo elastic-plastic stress-strain of single crystal Nickel-based superalloy on ANSYS platform is developed by APDL and UPFs of ANSYS.Numerical simulation of uniaxial tension thermo elastic-plastic stress-strain for single crystal nickel-based superalloy specimens at 680 ℃ is done along different orientations [001][,011] and [111]a,nd the calculating results is validated by test data.At lastt,he three dimensional nonlinear cyclic stress-strain of single crystal turbine disk-blade assembly is analyzed.

关 键 词：单晶合金 正交各向异性 热弹塑性 应力-应变 

分 类 号：V231.91[航空宇航科学与技术—航空宇航推进理论与工程] O344.2[理学—固体力学]