Elastic-Plastic Stress Analyses by Digital Image Correlation and Nonlinear Hybrid Method

Kenji Machida

doi:10.4028/www.scientific.net/AMM.3-4.39

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 3-4Elastic-Plastic Stress Analyses by Digital Image...

Elastic-Plastic Stress Analyses by Digital Image Correlation and Nonlinear Hybrid Method

Abstract:

In previous studies, the elastic stress field near the crack tip was investigated by digital image correlation and the 2-D intelligent hybrid method. In this study, the 2-D nonlinear hybrid method was developed to analyze the elastic-plastic singular stress field near the crack tip from the displacement data obtained by digital image correlation. Then, the 2-D nonlinear hybrid method was carried out to evaluate stress, strain and J integral. The 3-D elastic-plastic finite element method was conducted on the same specimen as the experiment, and the validity of this approach was discussed from the comparison of the experiment and 3-D finite element method.

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Periodical:

Applied Mechanics and Materials (Volumes 3-4)

Pages:

39-46

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.3-4.39

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Online since:

August 2006

Authors:

Kenji Machida

Keywords:

Digital Image Correlation (DIC), Elastic-Plastic FEM, Hybrid Method, Ĵ-Integral, Singular Stress Field

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References

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