Crystalline Orientation Effect on Stress of Single Crystal Turbine Blade Considering Nonlinear Contact Behaviour
In this paper,crystallographic slip constitutive law with variable stiffness method and Newton-Raphson iterative method was set up, and integrated with the common software ANSYS. A finite element analysis software platform was established, considering the characteristics of nonlinear contact. Elasticplastic, nonlinear contact and crystalline orientation of nickel-based single crystal turbine blade with the polycrystal turbine disk was simulated. The relationship between the maximum shear stress amplitude and the crystalline orientation in critical points was obtained. Calculation results showed that, the maximum shear stress amplitude of nickel-based single crystal turbine blade had significant correlation with crystalline orientation. The maximum shear stress amplitude at the critical point varied between 606MPa and 444MPa while the crystalline orientation changed. The curve distribution of maximum shear stress amplitude vs. crystalline orientation is relative to the position of a turbine blade, where the contact and non-contact region has different distribution patterns.
nickel-based single crystal superalloy nonlinear contact orthotropic crystalline orientation turbine blade crystallographic slip constitutive model
SUN Wan-chao LU Shan
School of Power and Energy, Northwestern Polytechnical University, Xian, China
国际会议
4th International Symposium on Jet Propulsion and Power Engineering(第四届喷气推进与动力工程国际会议 ISJPPE2012)
西安
英文
427-432
2012-09-10（万方平台首次上网日期，不代表论文的发表时间）