Analysis of Impact Characteristics of Bonded Dissimilar Materials for Center Pillar

센터필라 적용을 위한 이종 접합강의 충격 특성 해석에 관한 연구

  • 남기우 (부경대학교 재료공학과) ;
  • 박상현 (성우하이텍 기술연구소) ;
  • 유정수 (부경대학교 대학원 학연협동기계공학과) ;
  • 이상문 (부경대학교 대학원 학연협동기계공학과)
  • Received : 2011.10.06
  • Accepted : 2012.06.11
  • Published : 2012.08.01


This study was carried out to analyze the dynamic characteristics of laser tailor-welded blanks (TWBs) made of dissimilar materials. The analysis was performed using Hyper Works 10.0 with Solver LS-DYNA v.971. 2D-Shell was used as the modeling element, and the number of elements and nodes was 35,641 and 36,561, respectively. The impact speed was 10 km/h. To analyze the impact characteristics according to the height of the weld line for the upper and lower parts of the center pillar, the length of the lower part was set as 300 and 400 mm. When the lower part was made of SPFC980 steel with a length of 300 mm, the deformation was the smallest and the absorbed energy of the impact force was the largest. On based the lower part of center pillar, the position of TWB shows the shorter and the better value. In other words, the performance depended on the proportion of the upper part made of high-strength SABC1470 steel. A lower part made of SPFH590 steel showed large deformation. In contrast, a lower part made of SPFC980 steel showed significantly lesser deformation. Therefore, the impact performance of a lower part made of SPFC980 steel with a length of 300 mm showed the best analysis result.


Center Pillar;Dissimilar Material;Tailor Weld Blanks(TWB);Impact Test


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