This study aims to evaluate structural safety through FEM on the hollow shaft and the shaft filled with aluminum foam as the impact beam made of high tensile strength steel, Force reactions of impact beams are investigated when the forced displacement of 50mm is applied equally on two beams. When impact velocity of 80km/h is applied onto impact beams equally with the limit velocity of automobile on national road, how much impact energies can be absorbed by beams are also investigated. As study result, impact beams without aluminum foam and with aluminum foam show the maximum reaction forces of 15.53kN and 20.34kN respectively in case of the forced displacement of 50mm. As impact analysis result, impact beams without aluminum foam and with aluminum foam can absorb impact energies of 560J and 820J respectively. As impact beam with aluminum foam has reaction force and impact energy more than 23% and 30% than without aluminum foam, impact beam with aluminum foam has more safety than without aluminum foam.

Abstract
 1. 서론
 2. 연구모델
  2.1 임팩트 빔
  2.2 재료 물성치
 3. 해석 모델 및 조건
  3.1 해석 모델
  3.2 해석 조건
 4. 해석 결과
  4.1 반력 해석 결과
  4.2 충돌 해석 결과
 5. 결론
 후기
 참고문헌

• 조호선(공주대학교 기계공학과 대학원) | H. S. Cho
• 조재웅(공주대학교 기계자자동차공학부) | J. U. Cho 교신저자