کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7050067 | 1457163 | 2013 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermomechanical optimization of lightweight thermal protection system under aerodynamic heating
ترجمه فارسی عنوان
بهینه سازی حرارتی سیستم حفاظت حرارتی سبک تحت گرمایش آیرودینامیکی
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
An optimization procedure has been established aiming to design an integrated thermal protection system (ITPS) with minimum weight. The objective of this research is to establish the procedure and ensure its effectiveness. A corrugated sandwich panel has been chosen as the optimization problem. The ITPS geometric dimensions are considered as the design variables. The objective function is the mass per unit area of the ITPS and the constraint conditions are that the inner temperature and local stress both must be below certain values. The optimization problem is solved by developing a finite element simulation to represent the constraints. The parametric design language code in conjunction with the globally convergent method of moving asymptotes (GCMMA) has been developed for heat transfer analysis and thermal-mechanical analysis. The results show that the thicknesses of the top faceplate, bottom faceplate and insulation must be larger than 1Â mm, 3.2Â mm, and 134Â mm, respectively, to guarantee that the constraint temperature is below the safe value. Thermal-mechanical sizing could save more than 37% of weight compared to the initial design. Different working conditions and failure modes of space vehicle should be analyzed in the future. The optimization procedure might be useful in future works.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 59, Issues 1â2, 25 September 2013, Pages 425-434
Journal: Applied Thermal Engineering - Volume 59, Issues 1â2, 25 September 2013, Pages 425-434
نویسندگان
Gongnan Xie, Qi Wang, Bengt Sunden, Weihong Zhang,