Three Dimensional Cold Bending and Welding Residual Stresses in Penstock of 80kgf/mm^2 Class High Strength Steel Plate(Welding Mechanics, Strength & Design)
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- UEDA Yukio
- Osaka University
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- FUKUDA Keiji
- Osaka University
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- NISHIMURA Iwao
- Kurimoto Iron Works, Ltd.
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- IIYAMA Hideaki
- Kurimoto Iron Works, Ltd.
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- CHIBA Naomichi
- Kurimoto Iron Works, Ltd.
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- FUKUDA Minoru
- Kurimoto Iron Works, Ltd.
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抄録
In the process of fabrication of large size penstock, cold bending and welding are applied to thick plate. The resulting residual stresses should exhibit complex three dimensional distribution. These residual stresses should influence brittle fracture and fatigue strength. Therefore, it is worthwhile to measure these residual stresses as accurate as possible. The authors presented the new measuring principle based on the theory of inherent strains and developed several measuring methods for three dimensional residual stresses, which were very accurate judging from the theory of elasticity, although some approximate methods such as Rosenthal-Norton Method have been used so far. In this paper, the authors develop a new measuring method of residual stresses due to cold bending. For actual measurement, a large size model of penstock of 80kgf/mm^2 class high tensile strength steel plate is fabricated. Residual stresses due to cold bending are measured in the shell plate. Welding residual stresses at the longitudinal and circumferential weld joints are measured by L_y method which the authors presented before. It is observed that the maximum residual stress is about 50kgf/mm^2 to 60kgf/mm^2 which is less than the yield stress of the material.
収録刊行物
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- Transactions of JWRI
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Transactions of JWRI 12 (2), 277-286, 1983-12
大阪大学
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詳細情報 詳細情報について
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- CRID
- 1572824502139276416
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- NII論文ID
- 110006484422
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- NII書誌ID
- AA00867058
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- ISSN
- 03874508
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- 本文言語コード
- en
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- データソース種別
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- CiNii Articles