| 损伤定位中应变模态指标的改进研究 |
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| 引用本文： | 董晓马,王忠辉. 损伤定位中应变模态指标的改进研究[J]. 河南科学, 2008, 26(7) |
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| 作者姓名： | 董晓马 王忠辉 |
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| 作者单位： | 1. 郑州航空工业管理学院,郑州,450015
2. 中原工学院,郑州,450007 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 由于传统的应变模态差指标峰值大小随损伤程度而变化,在利用应变模态差指标作为神经网络输入来识别损伤位置时,就很可能产生误判,为消除损伤程度对应变模态差指标的影响,对应变模态差指标进行改进,给予理论证明,并通过悬臂梁数值仿真算例进行验证.验证结果表明,所建议的改进方法指标与理论研究一致.
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| 关 键 词： | 损伤定位 应变模态 改进 |
Studying on Strain Modal Index Improving in Damage Location |
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| Dong Xiaoma,Wang Zhonghui. Studying on Strain Modal Index Improving in Damage Location[J]. Henan Science, 2008, 26(7) |
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| Authors: | Dong Xiaoma Wang Zhonghui |
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| Affiliation: | Dong Xiaoma1,Wang Zhonghui2(1.Zhengzhou Institute of Aeronautical Industry Management,Zhengzhou 450015,China,2.Zhongyuan University of Technology,Zhengzhou 450007,China) |
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| Abstract: | Because traditional strain modal index change with damage degree,there is likely to exist miscarriage of justice when it is applied to identify structural damage location for NN(Neural Networks) input.In order to eliminate the damage degree effect on strain modal errand index,this paper give an improved index of strain modal errand and make theoretics proving.Finally,the results of numerical simulation experiment of cantilever girder show that the improved index is more effective than the original index. |
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| Keywords: | damage location strain modal improving |
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