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研究了如何应用数值方法模拟用金属液浸润纤维预制模来制造金属基复合材料的过程。采用有限元方法研究了渗流、热传导、应力、应变的演变过程 ,推导了相应的有限元方程 ,编制了轴对称情形下的计算程序。通过对浇铸过程的数值模拟 ,研究了可控初边值条件对浇铸过程的影响及对铸件中合金基体最终残余应力及塑性应变的影响 ;分析了浇铸得以完成及减少残余应力、应变的条件 ;将计算结果与已有的相似实验结果进行了比较 ,分析了数值模拟的可靠性
How to simulate the process of fabricating metal matrix composites by infiltrating prefabricated metal fibers with liquid metal was studied. The finite element method is used to study the evolution of seepage, heat conduction, stress and strain, and the corresponding finite element equations are deduced. The calculation program of axial symmetry is also compiled. Through the numerical simulation of the casting process, the influence of controllable initial boundary conditions on the casting process and the influence on the ultimate residual stress and plastic strain of the alloy matrix in the castings were studied. The condition of the casting was completed and the residual stress and strain were reduced. Comparing the calculated results with the existing similar experimental results, the reliability of the numerical simulation is analyzed