| 基于动力学的无损检测方法在复合材料桨叶上的应用 |
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| 引用本文： | 王瑞娟,刘勇.基于动力学的无损检测方法在复合材料桨叶上的应用[J].直升机技术,2011(1):14-18. |
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| 作者姓名： | 王瑞娟 刘勇 |
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| 作者单位： | 南京航空航天大学直升机旋翼动力学国家重点实验室,江苏南京,210016 |
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| 摘 要： | 基于动力学理论建立了复合材料桨叶结构特性分析及损伤检验的动力学方法。首先通过有限元瞬态分析获取复合材料桨叶在具体边界条件下的工作变形,即ODS;然后运用基于移动矩形窗的最小二乘拟合方法,提取边界层函数因子;最后根据边界层函数及组合的特性变化进行SA349桨叶及直九尾桨的损伤检测,实现了直升机桨叶上损伤位置的有效识别和定位,验证了该方法的有效性。
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| 关 键 词： | 无损检测 边界效应 最小二乘拟合 复合材料桨叶 |
Nondestructive Detection Method Based on Dynamics Using on Composite Blade |
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| Authors: | WANG Ruijuan LIU Yong |
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| Institution: | WANG Ruijuan,LIU Yong(National Key Laboratory of Rotorcraft Aeromechanics,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China) |
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| Abstract: | This paper presentat a method of the characteristic of the composite blade structure and damage detecting,basing on dynamics.First of all,the operational deflection shape of the structure(ODS) at the specific conditions was acquired by utilizing the transient finite element analysis.Then,based on the least-square fitting method with sliding window,the variables of the boundary layer functions were extracted.And last,according to the characteristics of boundary layer functions in the damage location,we gave ... |
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| Keywords: | nondestructive detection boundary effect least-squares fitting method composite blade |
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