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- It shows through theory and computor simulation that the changes of some frequencies and mode shapes caused by beam damage are not evident, the changes of curvature mode shapes are obvious. 仿真结果表明,破损对某些阶频率、振型的影响不大,对振型曲率的影响较大.用振型曲率监测简支梁的破损优于用频率或振型的监测方法。
- Application of Curvature Mode Shape in Damage Identification of Truss Bridge 曲率模态及其在桁架桥梁损伤识别中应用
- BRIDGE DIAGNOSIS USING CURVATURE MODE SHAPES 曲率模态在桥梁状态监测中的应用
- Study on the Damage Detection in the Beam Bridge Using Changes in Curvature Mode Shape 基于曲率模态振型进行梁式桥损伤识别研究
- curvature mode shape 曲率振型
- change rate of the mode shape curvature 模态曲率变化比
- The strength, stiffness and mode shape of the rear axle housing was calculated via finite elemant methool (FEM). 根据计算结果分析,指出了其结构存在的缺点,提出了改进方案。
- However, an exact relation between the normal mode shape and the complex FRF does exist. 然而,正规振型与复频响函数间的确存在一正确的关系。
- Variation ratio of curvature mode 模态曲率改变率
- The stochastic seismic response characteristics of the inequable loess stratum were analyzed by using the mode shape decomposed method. 算例结果表明,非均匀黄土地层的地震反应具有明显的放大作用。
- The advantage of ESPI for vibration measurement is that we can obtain the resonant frequency and the correspondent mode shape at the same time. 利用光学的电子斑点干涉术做为物体振动量测之特点,在于获得振频的同时,亦可得到其对应之振型的全场图。
- The feasibility and effectiveness of the extended pseudo mode shape method are justified by using a solid-modeled shaft and bladed disk as example. 本文利用三维实体元素之转轴与叶片轮模型验证模态仿形法应用叶片轮凝缩建模之可行性。
- The physical interpretation of P11 and PVDF mode shape functions are characterized respectively.The FRFs between the PZT actuators and PVDF sensors are experimentally measured. 以模态分析之理论基础推导对于压电材料梁系统之传统模态形式的频率响应函数,并分别验证得到压电片和压电薄膜模态振型之物理意义。
- Secondly, it establishes the dynamic model of the aerostatic bearing-spindle system, using the finite element method to obtain the natural frequency and mode shape. 其次,建立气体静压轴承-主轴系统动力学模型,以有限元素法求解其自然频率、振型。
- Study of Bridge Damage Diagnosis Based on Curvature Mode Theory 曲率模态理论在桥梁损伤诊断中的应用研究
- This paper gives a theoretical formulation for the extraction of mode shape by fitting the cross power spectra of the outputs and a cantilever beam is analysed. 该文提出了一种用互功率谱求振型的方法,并对此理论进行了详细推导,以一悬臂梁为例对该方法进行了试验验证。
- Our results show that FSI affects the system modal frequencies seriously, but mode shapes slightly. 结果表明,流固耦合作用对系统模态频率的影响较大,对系统模态振型的影响较小。
- STUDY OF REAL BRIDGE MODEL DAMAGE DETECTION BASED ON CURVATURE MODE THEORY 应用曲率模态理论识别实桥模型损伤的研究
- Dynmaic Damage Detection of Plate-Like Structure Using Curvature Mode Shpaes 振型曲率在板类结构动力检测中的应用
- DAMAGE IDENTIFICATION OF SIMPLY SUPPORTED BOARD BRIDGE BASED ON CURVATURE MODE 基于曲率模态法的简支板桥损伤识别研究