natural frequencies
Effect of Stiffeners on Natural Frequencies of Plate
... rectangular plate is investigated by using the finite element method (FEM). In the present model, the plates having fixed boundary conditions are considered to analyze the natural frequencies of stiffened ...
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Passive modifications for partial assignment of natural frequencies of mass-spring systems
... desired frequencies. The undamped natural frequencies of a constrained structure were calculated by solving a generalised eigenvalue problem derived from the equations of motion for the constrained ...
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Analytical solutions for the natural frequencies of rectangular symmetric angle-ply laminated plates
... The natural frequencies of laminated plates have been studied by Ohta and Ikuno [2002], who restricted their study to so-called cross-laminated plates (whereby the principal directions of each ply are ...
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The Effect of Damping and Stiffness of Bearing on the Natural Frequencies of Rotor-bearing System
... In this paper, the vibration of the rolling bearing- rotor system is investigated. The supporting rolling element bearing is simplified as a particle on a shaft with parallel stiffness and damping elements in two ...
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Using modal derivatives to determine the behaviour of mode shapes and natural frequencies during large deflections
... In both examples, the effect on axial mode shapes and axial natural frequencies is left out, since this did not yield accurate results. This was also concluded by Wu and Tiso in [2], but no reason has yet ...
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Natural Frequencies of Thin and Thick Metallic Plates: Analytical and Experimental Approach
... five natural frequencies of the laminate. The variation of natural frequencies with respect to various isotropic materials like brass, copper, stainless steel and aluminum is ...
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Keywords: Wind action, Brazilian code, Dynamic of structures, Experimental investigation, Natural Frequencies.
... In the first model, called static model, the influence of the fluctuating part of the Wind is taken into account by a Gust Factor in the calculation of the characteristic Wind velocity. It is considered that no resonance ...
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Determination of Natural Frequencies of Spur Gear in Portal Axle Gearbox
... of natural frequencies of a gearbox on three different spur gear configurations such as gear train having no idler gear, gear train having one idler gear and gear train having two idler ...its ...
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The Universal Grey Transfer Matrix Method and Its Application in Calculating the Natural Frequencies of Systems
... Example 1 [9]: Fig. 3 is a dynamic model of an equal-diameter discs system. The left end is fixed and the right end is free. The rotating inertia of each disc is J. The sprain stiffness of the axis is k. Find the ...
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Design and Natural Frequencies Analysis of Automotive Drive Shaft with Composite Materials
... An automotive propeller shaft, or drive shaft, transmits power from the engine to differential gears of rear wheel-driving vehicle. Automotive drive Shaft is a very important component of vehicle. The main concept of our ...
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A simple technique for calculating natural frequencies of geometrically nonlinear prestressed cable structures
... sponse of cable structures to load [9], the purpose of this paper is to present a simple but suciently accu- rate technique for calculating natural frequencies of cable structures. The technique is based ...
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Corrosion detection in pipelines based on measurement of natural frequencies
... second natural frequencies that were computed using ANSYS (Table 1) and the corresponding natural frequencies of the intact pipeline, 𝜔 J1 = ...
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Damage Detection Method Using Support Vector Machine and First Three Natural Frequencies for Shear Structures
... Structural health monitoring (SHM) has become a major focus of research in the area of structural dynamics. Many damage detection algorithms based on the modal properties of a structure including the natural ...
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On Natural Frequencies and Mode Shapes of Microbeams
... the natural frequencies and mode shapes of the ...The natural frequencies of the cantilever microbeam are calculated and compared with accessible closed-form analytical ...
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Effect of Stiffener Sizes on Natural Frequencies of Plate
... the natural frequencies of stiffened plates with fixed boundary conditions and the results show good agreement with earlier published ...the natural frequencies of a square plate. In this ...
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Influence of piezoelectric material on cantilever plate natural frequencies
... 9. Norwood, C.,“The Measurement of Natural Frequencies and Mode Shapes of Submerged Cylinders Using PVDF Strip Excitation”, Proceedings of Inter- Noise 95, Newport Beach, CA, pp. 1337-1340, 1995. Fig 30 Set ...
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Determination of natural frequencies and mode shapes of a wind turbine rotor blade using Timoshenko beam elements
... Abstract. When simulating a wind turbine, the lowest eigenmodes of the rotor blades are usually used to de- scribe their elastic deformation in the frame of a multi-body system. In this paper, a finite element beam model ...
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Analysis of Natural Frequencies for a Laminated Composite Plate with Piezoelectric Patches using the First and Second Eigenvalue Derivatives
... in natural frequencies for simple systems approximated with mass-spring systems ...in natural frequencies and relocating them in a favorable manner, is investigated and presented for a ...
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Comparison of Natural Frequencies of Vibration for a Bridge Obtained from Measurements with New Sensor Systeme
... Abstract: Deterioration and aging of bridges structures and damage caused by strong earthquakes might be conducive to collapse of the bridge, sometimes with catastrophic consequences. Therefore, investigation of ...
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Evaluation of bond graph based object oriented approach to determination of natural frequencies of packaging system elements
... Nevertheless, one may conclude very positive, and that this work proves that method applied can be used to determine dynamic properties during the product design process computer aided t[r] ...
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