Calculation of stress fields near notch roots in real life structures subjected to in-plane and out-of-plane deformations

Toyomitsu Harada, Hiroshi Noguchi

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Abstract

The authors proposed a practical method for estimating stress fields near a notch in a real structure under in-plane loading in the previous paper. In this method, boundary conditions of a region near a notch are determined reasonably, using the stress field expression and stress components measured by strain gages on the boundary. Therefore, in this method, precise estimation of the stress fields can be performed in a real structure whose boundary conditions are hard to grasp. In this paper, we develop this method further so that it can be used for notches under out-of-plane loading or simultaneous in-plane and out-of-plane loading. A straight boundary near a notch and non-symmetric boundary conditions are investigated as factors lowering the calculation precision. Consequently, there is the angular limitation of a notch in application of this method. However calculation results are accurate enough for most cases.

Original languageEnglish
Pages (from-to)10-19
Number of pages10
JournalJournal of Testing and Evaluation
Volume35
Issue number1
Publication statusPublished - Jan 2007

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Boundary conditions
Strain gages

All Science Journal Classification (ASJC) codes

  • Materials Science (miscellaneous)

Cite this

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title = "Calculation of stress fields near notch roots in real life structures subjected to in-plane and out-of-plane deformations",
abstract = "The authors proposed a practical method for estimating stress fields near a notch in a real structure under in-plane loading in the previous paper. In this method, boundary conditions of a region near a notch are determined reasonably, using the stress field expression and stress components measured by strain gages on the boundary. Therefore, in this method, precise estimation of the stress fields can be performed in a real structure whose boundary conditions are hard to grasp. In this paper, we develop this method further so that it can be used for notches under out-of-plane loading or simultaneous in-plane and out-of-plane loading. A straight boundary near a notch and non-symmetric boundary conditions are investigated as factors lowering the calculation precision. Consequently, there is the angular limitation of a notch in application of this method. However calculation results are accurate enough for most cases.",
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AB - The authors proposed a practical method for estimating stress fields near a notch in a real structure under in-plane loading in the previous paper. In this method, boundary conditions of a region near a notch are determined reasonably, using the stress field expression and stress components measured by strain gages on the boundary. Therefore, in this method, precise estimation of the stress fields can be performed in a real structure whose boundary conditions are hard to grasp. In this paper, we develop this method further so that it can be used for notches under out-of-plane loading or simultaneous in-plane and out-of-plane loading. A straight boundary near a notch and non-symmetric boundary conditions are investigated as factors lowering the calculation precision. Consequently, there is the angular limitation of a notch in application of this method. However calculation results are accurate enough for most cases.

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