Variation of stress intensity factor and elastic T-stress along the crack-front in finite thickness plates
Non-singular terms in the series expansion of the elastic crack-tip stress fields, commonly referred to as the T-stress. The T-stress is as an additional stress field characterizing parameter to stress intensity factor (K) in the analysis of cracked bodies. T-stress is used as an important constrain...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2009-04-01
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| Series: | Frattura ed Integrità Strutturale |
| Subjects: | |
| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero8/numero_8_art_4.pdf |
| Summary: | Non-singular terms in the series expansion of the elastic crack-tip stress fields, commonly referred to as the T-stress. The T-stress is as an additional stress field characterizing parameter to stress intensity factor (K) in the analysis of cracked bodies. T-stress is used as an important constraint parameter in the fracture analysis. In this investigation, three-dimensional finite element analyses have been conducted to compute the elastic T-stress considering a single edge notched tensile (SENT) specimen with varied thickness and a/W ratio. The results indicate that the T-stress depends on the specimen thickness and significantly varies along the crackfront from surface to centre of the specimen. The T-stress results obtained in the present analysis together with corresponding KI values can be used for analysis of constraint effects in a fracture specimen. |
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| ISSN: | 1971-8993 |