کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6742883 | 1429321 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Theoretical analysis on the damages for tungsten plasma facing surface under superposition of steady-state and transient heat loads
ترجمه فارسی عنوان
تجزیه و تحلیل نظری در مورد آسیب های سطوح روکش پلاسما تنگستن به دلیل ابررسانی بارهای حرارتی پایدار و موقت
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کلمات کلیدی
تنگستن، تجزیه و تحلیل عنصر محدود، تنش خشکی، ترک خوردن، بارهای بالا،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
The surface temperature and stress-strain distribution and evolution of a cylindrical W/Cu block under superposition of the steady-state heat loads corresponding to base temperature (20-600â¯Â°C) and transient heat fluxes (5â¯ms, 0-900â¯MWâ¯mâ2) were successfully simulated. The corresponding relations between stress-strain and temperature are compared with the yield strength-temperature relation to analyze the surface event evolution during the heating and cooling phases, which showed how the base temperature influenced the transient heat flux induced damages. The analysis results theoretically identified that the pre-heating by steady-state heat load indeed influenced the transient heat flux induced damages. Typically, no any crack would be generated even under extreme high transient heat fluxes close to the melting threshold if the base temperature exceeded the ductile to brittle transition temperature, and the surface also showed deterioration from roughing to cracking while then roughing with increasing of transient heat flux under a certain base temperature, which were in good agreement with the experiments results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fusion Engineering and Design - Volume 132, July 2018, Pages 99-106
Journal: Fusion Engineering and Design - Volume 132, July 2018, Pages 99-106
نویسندگان
Changjun Li, Dahuan Zhu, Baoguo Wang, Junling Chen,