Structural Engineering and Mechanics

  • 제18권6호
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  • Pages.731-744
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  • 2004
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Numerically integrated modified virtual crack closure integral technique for 2-D crack problems

  • Palani, G.S. (Structural Engineering Research Centre, CSIR Campus) ;
  • Dattaguru, B. (Indian Institute of Science) ;
  • Iyer, Nagesh R. (Structural Engineering Research Centre, CSIR Campus)
  • 투고 : 2003.12.05
  • 심사 : 2004.08.03
  • 발행 : 2004.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

Modified virtual crack closure integral (MVCCI) technique has become very popular for computation of strain energy release rate (SERR) and stress intensity factor (SIF) for 2-D crack problems. The objective of this paper is to propose a numerical integration procedure for MVCCI so as to generalize the technique and make its application much wider. This new procedure called as numerically integrated MVCCI (NI-MVCCI) will remove the dependence of MVCCI equations on the type of finite element employed in the basic stress analysis. Numerical studies on fracture analysis of 2-D crack (mode I and II) problems have been conducted by employing 4-noded, 8-noded (regular & quarter-point), 9-noded and 12-noded finite elements. For non-singular (regular) elements at crack tip, NI-MVCCI technique generates the same results as MVCCI, but the advantage for higher order regular and singular elements is that complex equations for MVCCI need not be derived. Gauss numerical integration rule to be employed for 8-noded singular (quarter-point) element for accurate computation of SERR and SIF has been recommended based on the numerical studies.

키워드

참고문헌

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피인용 문헌

  1. New a posteriori error estimator and adaptive mesh refinement strategy for 2-D crack problems vol.73, pp.6, 2006, https://doi.org/10.1016/j.engfracmech.2005.10.003
  2. Simulation and validation of disbond growth in co-cured composite skin–stringer specimens using cohesive elements 2017, https://doi.org/10.1177/0021998317715505