钛合金筒形件真空热胀形过程数值模拟

真空热胀形是一项创新的加工方法,零件的形状是通过模具热膨胀产生的压力来实现的.建立了钬合金筒形件真空热胀形过程的二维非线性热力耦合有限元模型.考虑了辐射传热和材料热物性参数随温度变化等因素的影响,利用MSC.Marc有限元软件模拟了钛合金筒形件真空热胀形过程.对真空热胀形过程温度场和变形场进行了分析,并进行了相应的实验验证,数值模拟结果与实验结果吻合较好.

Numerical simulation of vacuum hot bulge forming of titanium alloy cylindrical workpiece

Vacuum hot bulge forming is an innovative manufacture method used to produce many industrial components. Components are formed by thermal expansion of the die as forming load. A two-dimensional nonlinear thermo-mechanical coupled FE model was established, In this model, influences of many factors, such as nonlinear radiation heat transfer and thermal physical properties of material depending on temperature, were considered. Numerical simulation of vacuum hot bulge forming process of titanium alloy cylindrical workpiece was carried out using FE analysis software MSC. Marc. The temperature and deformation fields of vacuum hot bulge forming of titanium alloy cylindrical workpiece were analyzed. And the corresponding experiments were carried out, The simulation results agree well with the experimental ones.