The Use of CDM Analysis Techniques in High Temperature Creep Failure of Welded Structures(Special Issue on Creep and Fatigue at Elevated Temperatures)
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概要
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Techniques are reviewed for the calibration of constitutive relationships for the different phases of the weld. It is shown how the calibration is carried out using property ratios, and a knowledge of the constitutive equations of the parent material. The results of CDM analyses, obtained using the two-dimensional solver Damage XX, are reviewed for: a butt-welded pipe at 565℃; and, a welded cylinder-sphere pipe intersection at 590℃. Results are then presented of a three-dimensional CDM solution for a three-degree slice of the welded cylinder-sphere pipe intersection, and shown to be in close agreement with the two-dimensional, Damage XX, solution. Then the paper examines damage growth at a constant temperature of 590℃ in a ferritic steel butt-welded pipe subjected to a combined constant internal pressure of 4 MPa and a constant global bending moment of 49 kNm. The CDM results for a three-dimensional analysis are compared with qualitative experimental results, and good correlation is indicated.
- 一般社団法人日本機械学会の論文
- 2002-01-15
著者
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Wong Man
Department Of Mechanical Engineering Umist
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Wong Man
Department Of Electrical And Computer Engineering University Of California
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HAYHURST David
Department of Mechanical Engineering UMIST
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Vakili-TAHAMI Farid
Department of Mechanical Engineering UMIST
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