Experimental Investigation on Transverse Vibration Characteristic of Laminate Square Plates by ESPI

Due to particular structural design, the error of manufacturing and other factors, the tool system will have more or less residual imbalance. The spindle-tool system’s vibration signals and its frequency response structure were made as reference under the testing of machine raising speed idle running, firstly the tool system’s amount of imbalance was adjusted with the aid of the special balancing ring, then the spindle-tool system’s vibration characteristic was obtained under various amount of imbalanced in idle running condition, finally making use of frequency spectrum analysis the influence of unbalanced quantity to spindle-tool system’s vibration characteristics was studied and compared, the results and the researching approach can help to find the rules about the influence of tool system imbalance to its vibration characteristics in higher speed condition.

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Experimental Investigation of Transverse Vibration Characteristics of Beams

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2019.7039 ◽

2019 ◽

Vol 7 (7) ◽

pp. 265-273

Author(s):

Mahesha T. M

Keyword(s):

Experimental Investigation ◽

Transverse Vibration ◽

Vibration Characteristics

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Vibration characteristics of yarn in the tufted carpet machine

Textile Research Journal ◽

10.1177/0040517518817013 ◽

2018 ◽

Vol 89 (17) ◽

pp. 3567-3577

Author(s):

Huang Shuang ◽

Xu Yang

Keyword(s):

Differential Equation ◽

Transverse Vibration ◽

Vibration Characteristics ◽

Second Law ◽

Vibration Characteristic ◽

Vibration Equation ◽

Runge Kutta Method ◽

Reasonable Range ◽

Galerkin Truncation

To control the yarn vibration in a reasonable range and to improve the quality of tufted carpet, it is very important to understand the vibration characteristics of yarn correctly. The transverse vibration equation of yarn is established using Newton’s second law in different paths, and then the yarn vibration characteristic curves in different regions are obtained. Firstly, the yarn path is divided and the optimal constitutive model of tufted carpet yarn is determined. Secondly, the transverse vibration is built by analyzing the force of yarn means. Then, the partial differential equation of yarn vibration is simplified as an ordinary differential equation by the Galerkin truncation method. The equation is solved numerically by using the Runge–Kutta method, obtaining the yarn amplitude in different regions. The vibration characteristics of the yarns after the jacquard parts are emphatically analyzed, and the effects of the speed, tension and damping coefficient on the vibration characteristics of yarns are also discussed. Finally, the results are verified by experiments.

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Coupled Thermoelastic Vibration of the Axially Moving Sandwich Beam

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.312.301 ◽

2013 ◽

Vol 312 ◽

pp. 301-306

Author(s):

Jin Mei Wang ◽

Ying Hui Li ◽

E Chuan Yang

Keyword(s):

Transverse Vibration ◽

Sandwich Beam ◽

Material Model ◽

Axially Moving Beam ◽

Vibration Characteristic ◽

Vibration Equation ◽

Moving Beam ◽

Thermoelastic Vibration ◽

Axially Moving ◽

Axial Speed

The transverse vibration characteristic of the viscoelastic sandwich beam with axial speed is studied under the coupled temperature field and displacement field. Based on the theory of Euler - Bernouli beam and the constitutive relation of Kelvin viscoelastic material model, the transverse vibration equation of the axially moving beam is established ; considering the interaction of the material deformation and the heat conduction, the coupled governing equation of the beam is obtained. and the coupled thermoelastic dynamics system are obtained by Galerkin method. The related thermal parameters on the vibration frequency are analyzed by using numerical method.

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