Multiscale and Multiphysics Mechanics

  • 제1권1호
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  • Pages.35-51
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  • 2016
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  • 2383-7306(pISSN)
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  • 2465-9711(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Estimation of a mixed-mode cohesive law for an interface crack between dissimilar materials

  • Song, Sung-Il (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology) ;
  • Kim, Kwang-Soo (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology) ;
  • Kim, Hyun-Gyu (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology)
  • 투고 : 2015.04.03
  • 심사 : 2015.10.22
  • 발행 : 2016.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

In this paper, a mixed-mode cohesive law for an interface crack between epoxy and TR (transparent thermoplastic) resin is inversely estimated by the field projection method using numerical solutions and experimentally measured displacements. Displacements in a region far away from the crack tip are measured by digital image correlation technique. An inverse analysis, the field projection method formulated from the interaction J- and M-integrals with numerical auxiliary fields, is carried out to estimate a mixed-mode cohesive law for an interface crack between dissimilar materials. In the present approach, nonlinear deformations and damage near the crack tip are converted into the relationships of tractions and separations on crack surfaces behind the crack tip. The phase angle of mixed-mode singularities of the interface crack is also obtained from measured displacements in this study.

키워드

과제정보

연구 과제번호 : Launching Plug-in Digital Analysis Framework for Modular system Design

연구 과제 주관 기관 : Ministry of Trade, Industry & Energy (MI)

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  2. Using CZM and XFEM to predict the damage to aluminum notched plates reinforced with a composite patch vol.15, pp.2, 2020, https://doi.org/10.2140/jomms.2020.15.185
  3. Adhesive thickness effects on the mixed-mode fracture toughness of bonded joints vol.96, pp.1, 2016, https://doi.org/10.1080/00218464.2019.1681269
  4. Selected Aspects of Cohesive Zone Modeling in Fracture Mechanics vol.11, pp.2, 2016, https://doi.org/10.3390/met11020302