| 变刚度复杂梁结构损伤检测方法研究 |
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| 引用本文： | 冯侃,励争,高桂云,苏先樾.变刚度复杂梁结构损伤检测方法研究[J].应用数学和力学,2011,32(4):445-454. |
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| 作者姓名： | 冯侃 励争 高桂云 苏先樾 |
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| 作者单位： | 北京大学工学院力学与空天技术系,湍流与复杂系统国家重点实验室,北京 100871 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)资助项目(2007CB714603) |
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| 摘 要： | 提出了适用于复杂梁结构损伤检测的子段模态应变能法SSEM(subsectionstrainenergymethod)，并分析了该方法的适用性条件．通过对变截面梁的有限元计算，以及对纤维增强复合材料风机叶片缩比模型的试验分析，验证了SSEM方法确定的结构损伤指标对损伤准确定位的可靠性．该基于振动的变刚度复杂梁结构的损伤检测方法，可应用于工程实际中梁和类梁整体结构的损伤检测．
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| 关 键 词： | 损伤检测 模态应变能 变刚度梁 纤维增强复合材料 风机叶片 |
| 收稿时间： | 2011-01-25 |
Damage Detection Method in Complicated Beams With Varying Flexural Stiffness |
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| FENG Kan,LI Zheng,GAO Gui-yun,SU Xian-yue.Damage Detection Method in Complicated Beams With Varying Flexural Stiffness[J].Applied Mathematics and Mechanics,2011,32(4):445-454. |
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| Authors: | FENG Kan LI Zheng GAO Gui-yun SU Xian-yue |
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| Affiliation: | State Key Laboratory for Turbulence and Complex Systems;Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing 100871, P. R. China |
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| Abstract: | A damage detection method for complicated beam-like structures was proposed based on the subsection strain energy method(SSEM),and its applicable condition was introduced.For a beam with continuously varying flexural stiffness and an edge crack,the SSEM was applied to detect the crack location effectively by numerical modal shapes.As a complicated beam,the glass fiber-reinforced composite model of a wind turbine blade was studied by an experimental modal analysis.The SSEM was used to calculate the damage in... |
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| Keywords: | non-destructive testing modal strain energy varying flexural stiffness beam fiber reinforced composite material wind turbine blade |
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