超塑性胀形最佳加压曲线的确定

Determination of the Optimal Pressure Curve During Superplastic Bulging

根据超塑性流动方程和长梯形槽、圆台筒等的起塑性变形模式，计算长梯形槽、圆台筒等在合适的恒应变率条件下胀形压力随时间的变化关系。同时，在分析单型腔简单胀形件加压曲线的基础上讨论多型胶复杂胀形件的加压规范。

The optimal curve for pressure vs. time of superplastic bulging of such parts as long trapezoid groove and truncated cone etc. is calculated based on superplastic flow equation σe=kεem and their superplastic deformation pattern. Furthermore, the proper specifications of bulging pressure of complex multi-mould parts are discussed on the basis of analysing singlemould bulging parts.