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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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The ingot-breakdown scheme of a tower flange material (low-alloy steel) for offshore wind turbine was investigated using finite element (FE) simulations and experimental analyses. Based on compression test results of the low-alloy steel, a deformation processing map was generated using the superposition approach between the dynamic materials model (DMM) and Ziegler’s instability criterion. The deformation processing map allowed determination of the optimum process conditions for the tower flange material. Within the FE simulations of the ingot breakdown process, the Cockcroft-Latham criterion, which considers ductile fracture, was used to predict the possibility of forming defects during the hot working process. In general, the critical value for the ductile fracture of steel is 0.74. During the ingot-breakdown under optimum process conditions, the actual tower flange forgings exhibited a relatively uniform shape without any forming defects.
목차
Abstract
1. 서론
2. 실험 방법
3. 연구 결과
4. 결론
참고문헌
참고문헌 (12)
참고문헌 신청
1. [기타자료] - L. Germanisher / 2003 / Rules and regulations, IV - Non-marine, Part 1 -Wind Energy, Regulation for the certification of the Wind Energy Conversion Systems / Germanischer Lloyd
2. [학술지(정기간행물)] - S. H. Cho / 1998 / The EF Fects of Deformation Variables on Hot Workability of Austenitic Stainless Steel / Met. Mater. Int 4 (4) : 732 ~ 736
4. [학술지(정기간행물)] - Y. V. R. K. Prasad / 1998 / Modelling of Hot Deformation for Microstructural Control / Int. Mater. Rev 43 (6) : 243 ~ 258
5. [기타자료] - C. I. Garcia / 1994 / Hot Deformation Behavior of Superalloy 718 / The Minerals, metals & Materials Society : 293 ~ 302
6. [단행본] - H. Ziegler / 1963 / Progress in Solid Mechanics / John Wiley and Sons : 93 ~
2. [학술지(정기간행물)] - S. H. Cho / 1998 / The EF Fects of Deformation Variables on Hot Workability of Austenitic Stainless Steel / Met. Mater. Int 4 (4) : 732 ~ 736
4. [학술지(정기간행물)] - Y. V. R. K. Prasad / 1998 / Modelling of Hot Deformation for Microstructural Control / Int. Mater. Rev 43 (6) : 243 ~ 258
5. [기타자료] - C. I. Garcia / 1994 / Hot Deformation Behavior of Superalloy 718 / The Minerals, metals & Materials Society : 293 ~ 302
6. [단행본] - H. Ziegler / 1963 / Progress in Solid Mechanics / John Wiley and Sons : 93 ~
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UCI(KEPA) : I410-ECN-0101-2014-551-000257486