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采用ANSYS有限元软件对Ti-1100钛合金框架结构铸件在铸造过程的变形、应力和温度场进行了模拟研究。在模拟的初始阶段,将石墨型壳设置为RIGID模型,之后设置为VACANT模型。结果表明,框架结构铸件的内部和上部温度较低,而较高的温度分布在下部浇道位置;铸件发生弯曲变形的位置为两侧尖部,方向为y轴负方向;应力集中出现在铸件的内部结构转角处。将模拟结果和实验结果对比,二者能够吻合良好,说明了模拟的正确性。
ANSYS finite element software was used to simulate the deformation, stress and temperature field of Ti-1100 titanium alloy frame castings in casting process. In the initial phase of the simulation, the graphite shell was set as the RIGID model and later as the VACANT model. The results show that the temperature of the inner and the upper part of the frame structure castings is lower and the higher temperature is distributed in the lower part of the runner. The bending deformation occurs on both sides of the castings in the negative direction of the y-axis. Stress concentration occurs in the castings The internal structure of the corner. The simulation results and experimental results, the two can be in good agreement, indicating the correctness of the simulation.