• Title/Summary/Keyword: 이종재료

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Convergence Study on Composite Material of Unidirectional CFRP and SM 45C Sandwich Type that Differs in Stacking Angle (적층각도가 다른 단방향 CFRP와 SM45C샌드위치형 복합재료에 관한 융합적 연구)

  • Park, Jae-Woong;Cho, Jae-Ung
    • Journal of the Korea Convergence Society
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    • v.8 no.7
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    • pp.231-236
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    • 2017

  • In this study, the inhomogeneous material composed of CFRP(carbon fiber reinforced plastic) and structural metal of SM45C is used for the light material. The finite element analysis on the basis of compact tension test was carried out by using the composite material for sandwich type bonded with the unidirectional CFRP that differs in fiber stacking angle at both sides with the core of SM 45C. CT test is the representative method to confirm the fracture behaviour due to crack in material under the load. The effect on crack and hole must be investigated in order to apply inhomogeneous material to mechanical structure. As the result of this study, the fracture behaviour by CT test of the composite material for sandwich was studied by simulation analysis. The sandwich composite of unidirectional CFRP with the stacking angle of [0/60/-60/0] has the superior strength and the maximum equivalent stress of about 182GPa.Also, the esthetic sense can be shown as the designed factor of shape with composite material is grafted onto the convergence technique.

  • https://doi.org/10.15207/JKCS.2017.8.7.231 인용 PDF KSCI

A Simple Analysis to Obtain a Singularity near a Crack Perpendicular to Bimaterial Interface by Using 8-node Isoparametric Element (8절점 등매개 요소를 이용하여 이종재료 접합면에 수직인 크랙의 특이성 표시를 위한 간편해석법)

  • Won-Kyun Lim;Sang-Chul Kim
    • Journal of the Society of Naval Architects of Korea
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    • v.29 no.2
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    • pp.73-78
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    • 1992

  • Numerical method by Abdi et al. for obtaining a stress singularity near a crack perpendicular to the interface between two elastic materials is reviewed. More efficient and simple method to obtain crack singularity by shifting a mid-side node of 8-node isoparametric element is presented. It is observed that the present analysis provides increased accuracy for the expression of the opening displacement and the determination of the optimal position of the mid-side node for a wide range of material properties.

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