椭圆凹模液压胀形法制作成形极限图

Study on Forming Limit Diagram by bulging with Elliptic Die

本文介绍了一种利用椭圆凹模液压胀形制作成形极限图的方法．与通常采用的半球形凸模和圆柱凸模刚模胀形法相比，该方法更简便易行．

A experimental method to obtain forming limit diagram by bulging with elliptic die is introduced.It is more simple and easy than stetch forming with hemispherical punch or cylindrical punch.