Bending Performance Evaluation of Reinforced Aluminum Square Tube Beams

보강 알루미늄 사각관 보의 굽힘 성능평가

  • Lee Sung-Hyuk (Artifiicial Muscle Research Center, Konkuk University) ;
  • Choi Nak-Sam (Department of Mechanical Engineering, Hanyang University)
  • 이성혁 (건국대학교 인공근육연구센터) ;
  • 최낙삼 (한양대학교 기계공학과)
  • Published : 2005.09.01

Abstract

Bending performances of aluminum square tube beams reinforced by aluminum plates under three point bending loads have been evaluated using experimental tests combined with theoretical and finite element analyses. A finite element simulation for the three-point bending test was performed. Basic properties of aluminum materials used for initial input data of the finite element simulation were obtained from the true stress-true strain curves of specimens which had been extracted from the Al tube beams. True stresses were determined from applied loads and cross-sectional area records of a tensile specimen with a rectangular cross-section by real-time photographing, and true strains were obtained from in-situ local elongation measurements of the specimen gage portion by the multi-point scanning laser extensometer. Six kinds of aluminum tube beam specimens adhered by aluminum plates were employed fur the bending test. The bending deformation behaviors up to the maximum load described by the numerical simulation were in good agreement with experimental ones. After passing the maximum load, reinforcing plate was debonded from the aluminum tube beam. An aluminum tube beam strengthened by aluminum plate on the upper web showed an excellent bending capability.

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