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- ZHOU Runze
- CHIYODA Corporation
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- KOJIMA Ikuo
- CHIYODA Corporation
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- TSUJI Hirokazu
- TOKYO DENKI UNIVERSITY
Bibliographic Information
- Other Title
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- 減肉を有する炭素鋼配管の繰返し変形特性評価
- ゲンニク オ ユウスル タンソコウ ハイカン ノ クリカエシ ヘンケイ トクセイ ヒョウカ
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Abstract
Fitness-For-Service (FFS) assessments are quantitative engineering evaluations that perform to demonstrate the integrity of an in-service component that may contain a flaw or damage. It can be used to make run-repair-replace decisions to help determine if pressured equipment containing flaw that have been identified by inspection can continue to operate safety for some period of time. <br>This paper provides a FFS assessment method on carbon steel pipe which contained a LTA (Local Thin Area) against seismic load by FEM (Finite Element Method) analysis. Abaqus Ver. 6. 10, which provides the combined isotropic⁄kinematic hardening model, is used to simulate the LTA contained carbon steel pipe against seismic load. Material parameters in the hardening model are identified by a symmetric strain cycle experiment based on ASTM E606. Isotropic hardening component is introduced by specifying the equivalent stress defining the size of the yield surface, as a tabular function of the equivalent plastic strain. Kinematic hardening component is obtained from the stabilized cycle of a specimen that is subjected to symmetric stain cycles. <br>The authors introduced the way how to calibrate the material parameters of combined isotropic⁄kinematic hardening model. Then the authors calculated up to 200 cycles on carbon steel pipe which contained a Local Thin Area against seismic load at 300 degrees centigrade. The results comparison between FEM analysis and experiment shows that stress-strain hysteresis loop tendency and number of cycles to failure are predicted accurately. Safety margin of ratcheting assessment also was discussed in this paper.
Journal
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- Journal of High Pressure Institute of Japan
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Journal of High Pressure Institute of Japan 52 (2), 81-90, 2014
HIGH PRESSURE INSTITUTE OF JAPN(HPI)
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Keywords
Details 詳細情報について
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- CRID
- 1390282679592846464
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- NII Article ID
- 130004446956
- 40020055801
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- NII Book ID
- AN00011762
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- ISSN
- 13479598
- 03870154
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- NDL BIB ID
- 025439608
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed