Advances in aircraft and spacecraft science

  • 제1권2호
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  • Pages.177-196
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  • 2014
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  • 2287-528X(pISSN)
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  • 2287-5271(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Linking bilinear traction law parameters to cohesive zone length for laminated composites and bonded joints

  • Li, Gang (Aerospace, National Research Council Canada M-3) ;
  • Li, Chun (Aerospace, National Research Council Canada M-3)
  • 투고 : 2013.07.18
  • 심사 : 2013.11.01
  • 발행 : 2014.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

A theoretical exploration for determining the characteristic length of the cohesive zone for a double cantilever beam (DCB) specimen under mode I loading was conducted. Two traction-separation laws were studied: (i) a law with only a linear elastic stage from zero to full traction strength; and (ii) a bilinear traction law illustrating a progressive softening stage. Two analytical solutions were derived for the first law, which fit well into two existing solution groups. A transcendental equation was derived for the bilinear traction law, and a graphical method was presented to identify the resultant cohesive zone length. The study using the bilinear traction law enabled the theoretical investigation of the individual effects of cohesive law parameters (i.e., strength, stiffness, and fracture energy) on the cohesive zone length. Correlations between the theoretical and finite element (FE) results were assessed. Effects of traction law parameters on the cohesive zone length were discussed.

키워드

참고문헌

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피인용 문헌

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  2. A new analytical approach for optimization design of adhesively bonded single-lap joint vol.59, pp.2, 2016, https://doi.org/10.12989/sem.2016.59.2.313
  3. On the identification of cohesive parameters for printed metal-polymer interfaces vol.26, pp.5, 2017, https://doi.org/10.1088/1361-665X/aa699f
  4. The effects of adhesion on the tensile strength of steel-polymer sandwich composites vol.30, pp.5, 2014, https://doi.org/10.1080/09243046.2020.1835793