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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.9
- 수록면
- 3,478 - 3,492 (15page)
- DOI
- 10.1007/s12540-020-00921-4
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초록· 키워드
오류제보하기
In the present study, different finite element (FE) models were prepared to investigate weld induced residual stresses inthick multi-pass butt welded joint of SA516 Gr. 70 plates. Both 3D and 2D full geometry models and their axisymmetrichalf models were taken into consideration. The competence of these FE models on the accuracy of predicting residual stressdistribution across the weld cross-section was investigated by comparing it with the experimental results. Blind hole drillingtechnique and deep hole drilling technique were employed to evaluate the surface and through-thickness residual stressdistributions, respectively. In addition, the change in volume and yield strength of weld material due to austenitic phasetransformation was also incorporated in the material modeling to observe the effect of solid-state phase transformation(SSPT) on the evaluation of residual stresses. Computed residual stresses obtained from different FE models indicate thatthe 3D FE models procured the best accuracy compared with the experimental results. On the other hand, 2D models cansave a significant amount of computational time with reasonable accuracy. Incorporation of SSPT in the 3D FE full modelexhibited a better agreement of predicted results with the experimental measurements.
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