A Study on Hot Stamping of Tailor Welded Blanks
Journal
Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers, Series C/Chung-Kuo Chi Hsueh Kung Ch'eng Hsuebo Pao
Journal Volume
43
Journal Issue
5
Date Issued
2022-10-01
Author(s)
Abstract
The automotive industry is constantly seeking to reduce the weight of vehicles without compromising safety. Effectively resisting side crashes requires that the B-pillars in automobiles possess high energy absorption capacity in their base area while retaining the martensitic structure to prevent deformation in the upper area. This has led to the development of tailor welded blanks (TWBs), in which a single automobile structural panel possesses a variety of mechanical properties. This study involved a series of experiments on the hot stamping of tailor welded blanks, including U-hat-shaped specimens and half-section B-pillars. In experiments, three-point bending tests revealed that the energy absorption capacity of the TWB test pieces was directly proportional to the strength of the constituent materials. It was also determined that it is possible to fabricate low-weight TWBs comprising highstrength and low-strength materials to guide structural parts' resistance and deformation behavior to achieve the characteristics required for crashworthiness.
Subjects
Energy absorption | Half-section B-pillar | Hot stamping | Tailor welded blank | Three-point bending test | U-hatshaped specimen
SDGs
Type
journal article