| 杨经晓.冲击波荷载作用下拉线塔的非线性动力分析[J].计算力学学报,1991,8(2): |
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| 冲击波荷载作用下拉线塔的非线性动力分析 |
| Nonlinear Dynamic Analysis of Guyed Tower Subjected to Air Blast Loading |
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| DOI：10.7511/jslx19912020 |
| 中文关键词: 冲击波,拉线塔,非线性,动力分析 |
| 英文关键词:guyed tower, nonlinear, dynamic analysis, |
| 基金项目: |
| 杨经晓 |
| 中国电子设备系统工程公司 |
| 摘要点击次数: 1460 |
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| 中文摘要: |
| 拉线塔是一种含有柔索的非线性结构。在冲击波荷载作用下,拉线塔在三维空间内会产生大范围的非线性位移,用工程上常用的模型简化方法来分析大变形拉线塔的误差比较大。本文采用非线性有限元法编制的可在微机上运行的拉线塔非线性静、动力分析程序,计算了单根柔索的阶跃冲击响应与冲击波荷载作用下拉线塔的非线性几何大变形动力响应,计算结果与有关文献的计算结果以及试验结果非常吻合。 |
| 英文摘要: |
| The guyed towers are highly geometrically nonlinear structures because of cables action.They undergo large deflections when subjected to air blast loading. In engineering analyses,reduced modeling analysis methods-are often used.These approachs have a great amount of error in larger deflections analysis. In this papar, a nonlinear finite element micro-computer program has been developed for the static and dynamic nonlinear analyses of guyed tower. Two numerical example are presented; one is nonlinear static and dynamic analysis of single cable under step function loading, the other is dynamic analysis of 12m guyed tower subjected to air blast loading. The results show to be in good agreement with the other auther's solutions and the experimental results. |
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