التفاصيل البيبلوغرافية
| العنوان: |
Fast procedure for Non-uniform optimum design of stiffened shells under buckling constraint. |
| المؤلفون: |
Hao, Peng, Wang, Bo, Tian, Kuo, Li, Gang, Sun, Yu, Zhou, Chunxiao |
| المصدر: |
Structural & Multidisciplinary Optimization; Apr2017, Vol. 55 Issue 4, p1503-1516, 14p |
| مصطلحات موضوعية: |
MECHANICAL buckling, HIERARCHICAL Bayes model, AXIAL loads, ASYMPTOTIC controllability, STIFFNESS (Mechanics) |
| مستخلص: |
For tailoring the non-uniform axial compression, each sub-panel of stiffened shells should be designed separately to achieve a high load-carrying efficiency. Motivated by the challenge caused by numerous variables and high computational cost, a fast procedure for the minimum weight design of non-uniform stiffened shells under buckling constraint is proposed, which decomposes a hyper multi-dimensional problem into a hierarchical optimization with two levels. To facilitate the post-buckling optimization, an efficient equivalent analysis model of stiffened shells is developed based on the Numerical Implementation of Asymptotic Homogenization Method. In particular, the effects of non-uniform load, internal pressure and geometric imperfections are taken into account during the optimization. Finally, a typical fuel tank of launch vehicle is utilized to demonstrate the effectiveness of the proposed procedure, and detailed comparison with other optimization methodologies is made. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
