| 基于不完整频响函数的结构整体状态评估 |
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| 引用本文： | 李柳生,李晓禹.基于不完整频响函数的结构整体状态评估[J].重庆交通大学学报(自然科学版),2011,30(2):330-333. |
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| 作者姓名： | 李柳生 李晓禹 |
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| 作者单位： | 江西蓝天学院土木系,江西,南昌,330029 |
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| 摘 要： | 分析了土木工程结构的有限元模型,推导了损伤判别指标,构建了整体损伤计算方程组;利用最小二乘法求解得到结构中的各单元损伤状况.利用结构的频响函数图形的偏移程度对结构的损伤进行定性判定;通过不完整频响函数建立损伤识别指标对损伤位置进行识别;构建了损伤定量计算方程组;利用最小二乘法求解该方程组,并对损伤程度进行评估.仿真结果...
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| 关 键 词： | 频响函数 损伤识别 定性 定位 定量 最小二乘法 |
Structural Integrated State Evaluation Based on Incomplete Frequency Response Function |
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| LI Liu-sheng,LI Xiao-yu.Structural Integrated State Evaluation Based on Incomplete Frequency Response Function[J].Journal of Chongqing Jiaotong University,2011,30(2):330-333. |
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| Authors: | LI Liu-sheng LI Xiao-yu |
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| Institution: | LI Liu-sheng,LI Xiao-yu(School of Civil Engineering,Jiangxi Bluesky University,Nanchang 330013,Jiangxi,China) |
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| Abstract: | Finite element model of civil engineering structure was analyzed;damage index was deduced;equations to calculate the damage weve built;damage of each unit of the structure was obtained through the least square method.Offset level of graphics of frequency response function was employed to determine structural damage;damage location was identified by damage index based on incomplete FRF;calculation equations of damage quantitative were established;damage degree was assessed by the least square.The simulation ... |
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| Keywords: | frequency response function damage identification qualitative localization quantitative the least square method |
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