저속 고정벽 충돌조건에서 고주파 국부연화 열처리를 적용한고장력강판 범퍼빔의 충돌흡수 능력 분석 (Impact Energy Absorption Capability Analysis of Locally Softened High-Strength Steel Bumper Beams Using Induction Heat Treatment)

서지정보

· 발행기관 : 한국자동차공학회
· 수록지 정보 : 한국자동차공학회 논문집 / 27권 / 1호 / 39 ~ 45페이지
· 저자명 : 강종수, 송명환, 전형준, 임재용

초록

This study demonstrated that local heat treatment enhanced the energy-absorbing capabilities of bumper beams that are made of high-strength steel. When the metal is employed to bumper beams, structural stiffness and strength are raised, though the energy-absorbing performance is doubtful. Softening the steel locally through induction, heat treatment was seen as a solution.
However, questions still remained on the location where it must be heat-treated and the appropriate level of induction power. Thus, numerical simulations were carried out to calculate energy absorption with regard to the heat treatment regions and induction power. To obtain material data, tensile tests were done on heat-treated steels based on several levels of induction power. As a result, the bumper beam that was heat-treated at the center with the largest amount of power yielded the most ideal results.

영어초록

This study demonstrated that local heat treatment enhanced the energy-absorbing capabilities of bumper beams that are made of high-strength steel. When the metal is employed to bumper beams, structural stiffness and strength are raised, though the energy-absorbing performance is doubtful. Softening the steel locally through induction, heat treatment was seen as a solution.
However, questions still remained on the location where it must be heat-treated and the appropriate level of induction power. Thus, numerical simulations were carried out to calculate energy absorption with regard to the heat treatment regions and induction power. To obtain material data, tensile tests were done on heat-treated steels based on several levels of induction power. As a result, the bumper beam that was heat-treated at the center with the largest amount of power yielded the most ideal results.

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