中文摘要：

针对ABAQUS材料库中没有模拟金属热变形的双曲正弦本构模型的现状，通过自行编写UHARD子程序在ABAQUS软件上实现了该模型的有限元仿真，使ABAQUS的材料库得以扩充，为金属高温变形的有限元模拟奠定了基础。随后对Al2O3sf/LY12复合材料进行的高温压缩行为仿真研究表明，变形温度越低，应变对屈服应力的影响越大，变形温度越高，应变对屈服应力的影响越小，这与实验结果相一致，由此证明了该仿真方法的准确性。

英文摘要：

With the UHARD subroutine, the hyperbolic sine constitutive relationship was implemented into the ABAQUS code, which established the foundation for the metal deformation at high temperature. The compression behavior of Al2O3sf/LY 12 composite at high temperature was simulated with this constitutive relationship on ABAQUS code, The results show that the simulation coincides with the experiments well, and the lower the temperature, the more the influence of the strain on the yield stress, vise verse. The results of the finite element analysis verify the validness of the simulation method.