반응표면법을 이용한 차체용 프런트 사이드 멤버의 스프링백 저감Springback Reduction in Stamping of Front Side Member with a Response Surface Method

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 373
  • Download : 0
Springback is a common phenomenon in sheet metal forming since the elastic recovery of the internal stresses is induced after removal of the tooling. The numerical analysis of springback is a complicated time-consuming job and its result is greatly effected by a type of the yield function, finite elements used and the constraint condition for eliminating a rigid body motion. In this paper, optimization of the draw-bead force is carried out utilizing the response surface method in order to reduce springback and improve shape accuracy of a deep drawn product. In the optimization process, the tendency of springback is evaluated qualitatively without springback simulation usually done with the implicit solving scheme. Instead of springback simulation, the amount of stress deviation along the thickness direction in the deep drawn product is used as an indicator of springback. The stamping process is analyzed for a front side member formed with advanced high strength steel (AHSS) sheets such as DP60. The analysis procedure fully covers the binderstamping, trimming and springback processes with the commercial clastofinite element code LS-DYNA 3D. The effect of the restraining force of draw-beads is confirmed with the decreased stress deviation. The analysis result shown in the final springback simulation demonstrates that the present analysis provides a guideline for controlling the evolution of springback based on the finite element simulation of complicated auto-body members.
Publisher
한국자동차공학회
Issue Date
2005-11-24
Language
KOR
Citation

한국자동차공학회 추계학술대회, v.1, pp.1812 - 1817

ISSN
1225-6382
URI
http://hdl.handle.net/10203/175221
Appears in Collection
ME-Conference Papers(학술회의논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0