Determination of stress intensity factors for multi-material junctions

Shen-Haw Ju, C. Y. Chiu, C. C. Lu

Research output: Contribution to journalArticle

Abstract

This study evaluates the junction-tip coordinates and the stress intensity factors (SIFs) of multi-material junctions using the image-correlation experiment and least-squares method. The major advantage of the proposed method is that the procedure is simple and systematic. First, complex displacement functions are deduced into a least-squares form, and then displacement fields from the image-correlation experiment are substituted into the least-squares equation to evaluate the SIFs. Compared with the SIFs from H-integrals using finite element results, the calculated least-squares SIFs are accurate if more than 10 eigenvalues are included. Furthermore, the least-squares SIFs are not sensitive to the maximum or minimum radius of the area from which data is included.

Original languageEnglish
Pages (from-to)23-34
Number of pages12
JournalInternational Journal of Fracture
Volume171
Issue number1
DOIs
Publication statusPublished - 2011 Sep 1

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Stress Intensity Factor
Stress intensity factors
Least Squares
Evaluate
Least Square Method
Experiment
Experiments
Radius
Finite Element
Eigenvalue

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Modelling and Simulation
  • Mechanics of Materials

Cite this

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Determination of stress intensity factors for multi-material junctions. / Ju, Shen-Haw; Chiu, C. Y.; Lu, C. C.

In: International Journal of Fracture, Vol. 171, No. 1, 01.09.2011, p. 23-34.

Research output: Contribution to journalArticle

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