Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Experimental Investigation of Shear Modulus of a Core in a Metallic Sandwich Plate with a Truss Core

트러스형 금속 샌드위치 판재에서 심재의 전단특성계수의 실험적 결정

  • 정창균 (KAIST 기계항공시스템학부 대학원) ;
  • 성대용 (KAIST 기계항공시스템학부 대학원) ;
  • 양동열 (KAIST 기계항공시스템학부) ;
  • 문경제 (조선대학교 기계공학과 대학원) ;
  • 안동규 (조선대학교 기계공학과)
  • Published : 2007.08.01
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Abstract

A sandwich plate with a truss core is composed of two face sheets and a pyramidal truss core between face sheets. This paper shows how to estimate the shear modulus of a truss core, experimentally. To determine the shear modulus of truss cores, 3-point bending tests are performed. For tests, metallic sandwich beams with truss cores are fabricated. Two kinds of truss cores are tested to investigate the shear modulus. Each test is repeated under different widths in order to increase accuracy. As a result, the shear modulus of sandwich beam is properly calculated. The deflection of a sandwich beam with a truss core by shear deformation takes the major contribution of the total deflection and the shear modulus of sandwich beam should be considered whenever it is designed.

Keywords

References

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