| Nickel-base alloy has good performance at high temperature:higher creep strength, corrosion resistance, excellent wear resistance, which can work for a long time at high temperature, so it is widely used as core components in aviation, aerospace and other structures. The study of nickel base alloy reflects a country’s scientific and technological level to a certain extent, especially the developmental level of aviation, aerospace. As countries continue to explore the aviation, aerospace, the requirements for aircraft are increasingly higher, especially in the core structure, the research of engine blade has increasingly become a focus on aviation, aerospace.The research group of the traditional advantage used in this research, basing on national or industry standards, using the finite element software ABAQUS as the simulation platform, using Fortran language to describe nickel-base alloy constitutive equations UMAT subroutine, high temperature performance of a certain type of nickel-base alloy is simulated. A nickel-base alloy geometric model created by CATIA software, according to the national standard, building Ni base alloy numerical model for creep test in the ABAQUS, forecasting the curves of stress-strain at five temperature.The ideas and methods to predict the creep properties of nickel base alloy in this paper is systematical, and modifying the ABAQUS subroutine UMAT were introduced in detail. Then the simulation is completed, contrasting to the process test results show:a feasible and effective method for nickel-base alloy creep performance prediction using subroutine UMAT is built, it has a certain reference value for the design and optimization of the creep behavior of Ni base alloy. |
