To predict the residual stress distribution of the Ti-4Al-1.5Mn (TC2) alloy in the manufacturing process, quickly and accurately, a precise dynamic constitutive model for rheological behavior and a new simplified approach for numerical simulation were proposed. The dynamic stress-strain curves indicate that the enhancement effect and plasticizing of the TC2 alloy are sensitive to high strain rates. The dispersed β particles play an important role in the formation of the adiabatic shear band and not widened significantly. The average relative error of 1.04% and the correlation coefficient of 0.9949 indicate that the modified Johnson-Cook constitutive model well describes the rheological behavior. Then, with the help of the Almen test, an efficient but simplified approach was proposed to achieving coverage and uniform loading in simulation. At last, the residual stress contribution of the TC2 alloy in the shot peening test is in a good agreement with the simulation results by random multipellet model.

为了快速，准确地预测Ti-4Al-1.5Mn（TC2）合金在制造过程中的残余应力分布，提出了一种精确的流变行为动态本构模型和一种简化的数值模拟方法。动态应力-应变曲线表明，TC2合金的增强作用和增塑对高应变速率敏感。分散的β颗粒在绝热剪切带的形成中起着重要作用，并且没有明显展宽。平均相对误差为1.04％，相关系数为0.9949，表明改进的Johnson-Cook本构模型很好地描述了流变行为。然后，借助Almen测试，提出了一种有效但简化的方法来实现模拟中的覆盖率和均匀负载。最后，