Design and sensitivity analysis of blank holding force for high strength steel sheet;

Numerical simulation for forming quality of drawing part under waving blank holding force;

Effect of blank holding force on forming quality was analyzed through simulation.

Application of radial basis function network in variable blank holding force identification;

A new device of variable blank holding force;

The study on the prediction technology of variable blank holding force in the formin.

A new strategy for the optimization of variable blank holder force in sheet metal forming;

Rectangular box drawing die design of controlled blank holder force;

Research on the critical analysis of blank holder force for drawing with draw bar of curved surface part;

On the basis of mechanics analysis about drawing with edge bead,both no blankholder force(BHF) and increased BHF,the stress distribution and stress are provided,and then the influence on tendency that prevent inner wrinkles by increasing BHF is discussed.

,which can be improved and solved by loading blankholder force(BHF) properly.

Based on a two-dimensional broken-line model of an annular flange and the energy method,the law of minimum wrinkless blankholder force in deep-drawing is discovered,considering the variations in material constants , and thickness.