Elastic and inelastic responses of C(T) specimens with discontinuous cracks

Nak Hyun Kim; Yun Jae Kim; Dave W. Dean; Catrin M. Davies; Kamran Nikbin; Ali Mehmanparast

doi:10.1115/1.4027818

Elastic and inelastic responses of C(T) specimens with discontinuous cracks

Nak Hyun Kim, Yun Jae Kim, Dave W. Dean, Catrin M. Davies, Kamran Nikbin, Ali Mehmanparast

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

This paper investigates elastic and elastic-plastic responses of a plane strain compact tension specimen containing a discontinuous crack using two-dimensional (2D) finite element analyses. Discontinuous cracking is represented by modeling two (main and sub) cracks with the distance between them systematically varied. The finite element predictions show that the presence of subcracks has minimal effect on the elastic compliance and potential difference but significantly influences the plastic limit loads and load line displacements (LLDs). The evaluation of the elastic and elastic-plastic behavior of the J-integrals evaluated using different contours for discontinuous cracks are also examined and explained.

Original language	English
Article number	014501
Journal	Journal of Pressure Vessel Technology, Transactions of the ASME
Volume	137
Issue number	1
DOIs	https://doi.org/10.1115/1.4027818
Publication status	Published - 2015 Feb 1
Externally published	Yes

ASJC Scopus subject areas

Safety, Risk, Reliability and Quality
Mechanics of Materials
Mechanical Engineering

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AU - Mehmanparast, Ali

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AB - This paper investigates elastic and elastic-plastic responses of a plane strain compact tension specimen containing a discontinuous crack using two-dimensional (2D) finite element analyses. Discontinuous cracking is represented by modeling two (main and sub) cracks with the distance between them systematically varied. The finite element predictions show that the presence of subcracks has minimal effect on the elastic compliance and potential difference but significantly influences the plastic limit loads and load line displacements (LLDs). The evaluation of the elastic and elastic-plastic behavior of the J-integrals evaluated using different contours for discontinuous cracks are also examined and explained.

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Elastic and inelastic responses of C(T) specimens with discontinuous cracks

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