| 基于响应面的大型输电塔结构有限元模型动力修正 |
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| 引用本文： | 程霄翔,费庆国,何顶顶,韩晓林.基于响应面的大型输电塔结构有限元模型动力修正[J].振动与冲击,2011,30(5):116-122. |
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| 作者姓名： | 程霄翔 费庆国 何顶顶 韩晓林 |
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| 作者单位： | 东南大学 土木工程学院，江苏 南京 210096 |
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| 基金项目： | 国家自然科学基金，国家电网公司重大科技创新项目，东南大学自然科学基金预研课题 |
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| 摘 要： | 针对基于灵敏度分析的有限元模型动力修正方法计算效率较低、迭代收敛慢的不足,将响应面法引入500 kV大跨越输电塔基准模型修正.选择塔脚弹性支承刚度为修正参数,依次进行单因素试验、样本值计算、响应面建立与分析、参数优化.修正后,有限元模型非常准确地复现了单塔横、纵两个方向的-阶弯曲动态特性,修正效果与基于灵敏度分析的模型修正方法接近,证明响应面法在有限元模型动力修正领域的应用价值.还探讨了塔架结构修正参数的选取问题,为相关研究提供参考.
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| 关 键 词： | 键关词：模型修正 响应面法 大型输电塔 参数选取 动态特性 |
| 收稿时间： | 2009-12-4 |
Dynamic updating of a large transmission tower's finite element model based on response surface methodology |
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| CHENG Xiao-xiang,FEI Qing-guo,HE Ding-ding,HAN Xiao-lin.Dynamic updating of a large transmission tower's finite element model based on response surface methodology[J].Journal of Vibration and Shock,2011,30(5):116-122. |
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| Authors: | CHENG Xiao-xiang FEI Qing-guo HE Ding-ding HAN Xiao-lin |
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| Affiliation: | College of Civil Engineering, Southeast University, Nanjing 210096, China |
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| Abstract: | To conquer deficiencies of poor computational efficiency and slow convergence of traditional sensitivity analysis-based finite element(FE) model updating methodology used widely,response surface methodology was introduced into a 500kV large transmission tower's dynamic FE model updating.Based on authors' former contributions,elastic stiffnesses of the tower's three directional foot bearings were selected as parameters to be updated.Key steps in updating process including one factor test,sample on FE platfor... |
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| Keywords: | model updating response surface methodology large transmission tower parameter selecting dynamic characteristics |
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