Additive manufacturing for minimizing vibration damages in the water-stop tray of washing machines

Berardi, Umberto; Iannace, Gino

doi:10.1177/0263092317712017

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…4,5 Also vibration can be caused by household appliances, for example by a washing machine. 6 For noise and vibration protection, different methods can be applied: adding weight to the equipment, application of vibration isolator, installation of dynamic damper, etc. In practice, the most convenient and effective way is to use vibration isolators.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of a group of quasi-zero stiffness vibration isolators with slightly different parameters

Valeev

2018

Journal of Low Frequency Noise, Vibration and Active Control

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This article is devoted to finding solutions of problems of vibration isolators with quasi-zero stiffness from a manufacturing point of view. The following study is appeared after experimental study and manufacturing of preproduction serial of universal isolators of a dome type. An analytical description of some types of vibration isolators with quasi-zero stiffness is briefly observed. The sensitivity of vibration isolators of a dome type is studied. It is proved that vibration isolators with quasi-zero stiffness require high precision at manufacturing. Dynamics of a group of vibration isolators is also analyzed. It appears that an average behavior of an isolator in a group may not coincide with the behavior of a single isolator. Due to the normal distribution of parameter, the total properties of the vibration isolator can be slightly changed.

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Section: Introductionmentioning

confidence: 99%

Dynamics of a group of quasi-zero stiffness vibration isolators with slightly different parameters

Valeev

2018

Journal of Low Frequency Noise, Vibration and Active Control

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“…Laboratory and high-precision equipment also have the problem of vibration protection. The need for protection from vibration arises in everyday life, for example, in washing machines [4].…”

Section: Introductionmentioning

confidence: 99%

Mathematical Simulation of Joint Work of a Vibration Isolator Group With Quasi-Zero Stiffness

Valeev¹,

Nikolaevich²,

Midhatovich³

et al. 2018

NUrSMU

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The relevance of the work is due to the need to develop new means of highly efficient vibration protection. One such means is a vibration isolator with quasi-zero stiffness. They are quite sensitive elements, so the problem of designing and operating vibration isolators with quasi-zero stiffness is relevant. Nowadays, comprehensive studies on their work within a group have not yet conducted. Purpose of the work is to study the sensitivity of vibration isolators with quasi-zero stiffness to the errors of geometric parameters while their manufacture. Methodology of research. This work is a continuation of the experimental studies of plate-type universal vibration isolators with quasi-zero stiffness. For the research, an analytical study and a computer-based multiple experimental procedure with random input data were used. Results. Analytical studies show that vibration isolators with quasi-zero stiffness are very sensitive objects. Basic properties, such as workload and stiffness under workload, largely depend on key parameters. Vibration isolators of plate type have a very strong dependence of the workload on the external and internal radii, the height of the cone and the wall thickness. The dynamics of a group of vibration isolators was analysed. Due to the deviation of different parameters and the nonlinearity of the power characteristics, the behaviour of the group does not coincide with the average behaviour of one vibration isolator. It has been found that for a group of isolators there is a slight increase in workload. Moreover, deviations in parameters lead to a decrease in stiffness. Conclusions. The high sensitivity of installed vibration isolators with quasi-zero stiffness proves that they require careful attention and high precision in manufacturing. The resulting deviations of the behaviour of a group of vibration isolators from the behaviour of a single vibration isolator indicate the need to enter appropriate corrections when designing them, otherwise this may lead to loss of stability and instability of the equipment, which should be avoided.

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Parametric studies on bending stiffness and damping ratio of Sandwich structures

Rajpal

K.P

Gangadharan

2018

Additive Manufacturing

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Additive manufacturing for minimizing vibration damages in the water-stop tray of washing machines

Cited by 3 publications

References 12 publications

Dynamics of a group of quasi-zero stiffness vibration isolators with slightly different parameters

Dynamics of a group of quasi-zero stiffness vibration isolators with slightly different parameters

Mathematical Simulation of Joint Work of a Vibration Isolator Group With Quasi-Zero Stiffness

Parametric studies on bending stiffness and damping ratio of Sandwich structures

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