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- 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。
- mode shape function 振型函数
- 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。
- Some developments of boundary contour method with perfect quadratic polynomial selected as displacement shape function are presented in this paper. 选择二次完全多项式作为位移形函数,对边界轮廓法作了进一步的发展。
- Boundary singular kernel method is adopted to modify EFG shape function to impose essential boundary conditions directly. 采用边界奇异核方法对EFG形函数进行修正,直接施加本质边界条件。
- 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。
- Objective To study the changes of cardiovascular shape function before and after whole lung lavage (Wll) in silicosis patients in order to evaluate theraputic effect of Wll . 目的探讨矽肺经全肺灌洗前后心血管形态与功能变化,以判断其疗效。
- 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。
- 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。
- 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。
- The RKP-BEF method has a higher precision as the smoothness of the shape function of RKP method is the same as that of the kernel function, and the values of polynomials at interpolating points can be exactly reconstructed. 重构核粒子法形成的形函数具有重构核函数的光滑性;且能再现多项式在插值点的精确值;所以本方法具有更高的精度.
- In the first step, the large modification problem is transferred to a small one by using a mass distribution weighing function, which copes with the inaccurately given mode shapes. 在第一步设计过程中,通过将参考振型作为节点质量配置的位置加权函数,有效地将大修改问题转化为小修改问题。
- Some types of shape dots which change with tone value are implemented by mease of dot shape function and Postscript language,comparasion of the experiment resule shows that tone value transmission characteristic of elliptical dot is better. 借助网点形状函数并利用PostScript语言编程,实现了若干种形状随阶调值变化的网点的制作,实验检测比较表明,其中变椭圆形网点的阶调传递特性相对较好。
- In order to assure the stability of the large deformation elastoplastic analysis, the Lagrangre material shape function deformed with material was used to analyze the splitting rolling process. 摘要为保证大变形弹塑性分析的稳定性,采用随材料变形的拉格朗日物质形函数分析了整个切分轧制过程。
- 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。
- Keywords: micro-gyroscope, silicon single crystal, three-axis angular-rate sensing, natural frequency and mode shapes. 关键词:微型陀螺仪、矽单晶、三轴角速率感测、振动自然频率与模态。
- Garvey S D, Penny JET, Friswell M I, et al.Quantifying the correlation between measured and computed mode shapes. 曹其英.;结构数学模型相关分析理论及方法研究:[博士学位论文]
- According to Davenport wind spectral,the filter of geaerlized fiuctuating wind forces for the mode shapes is established. 以Davenport风谱为标准,建立了相应于各振型的广义脉动风力成型虑波器。