| 单层网壳结构缺陷敏感区域研究 |
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| 引用本文： | 唐敢,王法武. 单层网壳结构缺陷敏感区域研究[J]. 勤云标准版测试, 2006, 0(4): 243-249 |
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| 作者姓名： | 唐敢 王法武 |
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| 作者单位： | 南京航空航天大学航空宇航学院,中国南京210016 |
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| 摘 要： | 提出了结构缺陷敏感区域的概念。借助结构缺陷稳定分析的改进随机缺陷法，研究了单层网壳结构的缺陷敏感区域。通过50m跨度的K6型凯威特网壳算例，得出它的缺陷敏感区域由前12类结点组成。并发现支座结点缺陷对K6型凯威特单层网壳结构影响不大；而主肋上结点与次肋上结点的缺陷对K6型网壳的影响相似，均会使其临界荷载下降很多。结果证明该方法可定量和准确地分析结构的缺陷敏感区域。
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| 关 键 词： | 缺陷 单层网壳结构 缺陷敏感区域 改进随机缺陷法 临界荷载 |
| 收稿时间： | 2006-06-30 |
| 修稿时间： | 2006-09-08 |
RESEARCH ON IMPERFECTION SENSITIVE REGION OF SINGLE-LAYER LATTICED DOMES |
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| Tang Gan,Wang Fawu. RESEARCH ON IMPERFECTION SENSITIVE REGION OF SINGLE-LAYER LATTICED DOMES[J]. , 2006, 0(4): 243-249 |
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| Authors: | Tang Gan Wang Fawu |
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| Affiliation: | College of Aerospace Engineering, NUAA, 29 Yudao Street, Nanjing, 210016, P. R. China |
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| Abstract: | The concept of the imperfection sensitive region is given. The advanced stochastic imperfection method is used to research the imperfection sensitive region of single-layer latticed domes. Taking a K6 single-layer latticed dome with a diameter of 50 m as an example, its imperfection sensitive region is made up of the first 12 kinds of joints. The influence of the imperfections of support joints on the stability of the K6 single-layer latticed dome is negligible. Influences of the joint imperfections of the main rib and the secondary rib on the structural stability are similar. The initial deviations of these joints all greatly lower the critical load of the dome. Results show that the method can analyze the structural imperfection sensitive region quantitatively and accurately. |
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| Keywords: | imperfection single-layer latticed dome imperfection sensitive region advanced stochastic imperfection method critical load |
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