| 노치가공에 의한 다층 FCA 용접부의 잔류응력 재분포 특성 |
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| Analysis of Welding Residual Stress Redistributions on Notched Multi-pass FCA Butt Weldment |
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Hee-Seon Bang, Han-Sur Bang, Ik-Hyun Oh, Jun-Hyung Kim |
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| Abstract |
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In the present study, two-dimensional plane deformation thermo elasto-plastic analysis has been carried out, in order to investigate the thermal and mechanical behaviour (residual stress, plastic strain, magnitude of stress and their distribution and production mechanism) on multi-pass FCA butt weldment of high strength EH36-TMCP ultra thick plate. Moreover, this study can be considered as a basis for analysing the fracture toughness, KIC, and its effect on welding residual stress redistribution with notch on multi-pass FCA butt weldment, in future. The results of welding residual stress obtained from thermo elasto-plastic analysis has been compared and verified with the results measured by XRD. |
| Key Words:
FCAW(Flux Cored Arc Welding), Ultra thick plate, EH36-TMCP steel, Thermal elasto-plastic analysis, Notch machined, Welding residual stress, X-Ray diffraction method |
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