Low-cycle fatigue life prediction of circumferentially notched component in terms of elastic-plastic fracture mechanics.
Bibliographic Information
- Other Title
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- 環状切欠部に生じた表面き裂の弾・塑性破壊力学的解析とそれに基づく低サイクル疲労寿命評価
- カンジョウ キリカキブ ニ ショウジタ ヒョウメン キレツ ノ ダン ソセイ
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Abstract
The elastic-plastic stress analysis was made by the finite element method. The surface crack growth rate, da/dN, was analyzed in terms of the elastic-plastic fracture mechanics parameters of the J-integral range, ΔJ and the strain intensity factor range, ΔKε, which were estimated in association with the stress and strain gradients produced in the cross section of the notched specimen. The low-cycle fatigue life for the crack propagation, Nc, was calculated by combining the cyclic stress-strain curve and the crack growth law expressed by the da/dN vs. ΔJ and da/dN vs. ΔKε relations. The calculation based on the fracture mechanics parameters determined from the stress-strain response at the notch root leads to a shorter life in the more sharply notched specimen under the lower stress condition. Meanwhile, the fracture mechanics parameters associated with the stress and strain gradients in the cross section of the notched specimen give a good estimation of the life prediction.
Journal
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- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
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TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 56 (522), 295-303, 1990
The Japan Society of Mechanical Engineers
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Details 詳細情報について
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- CRID
- 1390001204417994112
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- NII Article ID
- 110002373027
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- NII Book ID
- AN0018742X
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- ISSN
- 18848338
- 03875008
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- NDL BIB ID
- 3655352
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed