Chapter 29 The Research on Servo-Flexible Stamping Applied in Sheet Metal Forming of Tailored Blanks of Advanced High Strength Steel

摘要

The advanced high strength steel B pillar was designed to be a tailored blank component which combines tailor welded blanks with tailor rolled blanks, and the formability of the B pillar was studied through the finite element method. Applying new servo-flexible stamping can obviously improve the deep drawability of advance high strength steel B pillar, and improve the deepness of B pillar by about 18 %. Furthermore, the variable blank holder force curves were optimized, based on the plastic theory and energy method.