Comparison of Passive and Active Methods for Minimization of Sound Radiation by Vibrating Clamped Plate

Kozupa, Michał; Wiciak, Jerzy

doi:10.12693/aphyspola.119.1013

Cited by 9 publications

(3 citation statements)

References 16 publications

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“…The large number of sources of impulse noise in manufacturing plants significantly increases the acoustic background. Generally, there are two different approaches to noise attenuation: passive and control techniques [13][14][15]. Currently, the most popular method of noise reduction in pneumatics is the use of various types of mufflers.…”

Section: Introductionmentioning

confidence: 99%

Exhaust Noise Reduction by Application of Expanded Collecting System in Pneumatic Tools and Machines

et al. 2021

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In this paper, we demonstrate how to reduce the noise level of expanded air from pneumatic tools. Instead of a muffler, we propose the expanded collecting system, where the air expands through the pneumatic tube and expansion collector. We have elaborated a mathematical model which illustrates the dynamics of the air flow, as well as the acoustic pressure at the end of the tube. The computational results were compared with experimental data to check the air dynamics and sound pressure. Moreover, the study presents the methodology of noise measurement generated in a pneumatic screwdriver in a quiet back room and on a window-fitting stand in a production hall. In addition, we have performed noise measurements for the pneumatic screwdriver and the pneumatic screwdriver on an industrial scale. These measurements prove the noise reduction of the pneumatic tools when the expanded collecting system is used. When the expanded collecting system was applied to the screwdriver, the measured Sound Pressure Level (SPL) decreased from 87 to 80 dB(A).

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Section: Introductionmentioning

confidence: 99%

Exhaust Noise Reduction by Application of Expanded Collecting System in Pneumatic Tools and Machines

et al. 2021

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“…Amabili et al [1] performed a study on large-amplitude forced vibrations of a clamped plate excited by a centralized harmonic force. Another study [2] conducted a comparative study of active and Article published by EDP Sciences…”

Section: Introductionmentioning

confidence: 99%

Parameter configuration of composite vibration isolation system using power flow and MOPSO technique

Wei

Zhu

et al. 2016

Mechanics & Industry

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Traditional vibration isolation design often aims to suppress vibrations from machinery equipment, while vibrations in the foundation are usually ignored. In this paper, the "machinery equipmentsingle-stage (double-stage) isolators -thin plate foundation" is considered as a composite vibration isolation system, with equipment deployed at four positions on the plate. The forces transmitted from the equipment to the foundation were derived using a mechanical four-pole connection principle, and the displacement admittance of the junctions between the equipment and the plate was used as the key intermediate variable. Multi-objective optimization for the proposed system was subsequently performed, using fitness functions to reduce the maximum power flow transmitted to the plate and ensure a uniform vibration of the machinery equipment. A multi-objective particle swarm optimization (MOPSO) algorithm was used as the optimization tool which offers the advantages of fewer parameter settings, fast convergence, a strong optimization capability, and possession of a unique, global and optimal solution (gbest solution) based on Pareto dominance. The power flow that induced plate vibrations from the machinery isolation system was introduced in this study, which was used to consider the transmitted force and velocity on the plate simultaneously. An advanced theory of clamped plate vibration aptly supported this strategy, and inspiration was also provided by an innovative optimization strategy based on artificial intelligence.

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“…Active noise-vibration control systems often rely on structural sound sources (Pawełczyk 2008, Leniowska 2011, Kozupa and Wiciak 2010, Mazur and Pawełczyk 2011. However, for successful active control of a vibrating structure it is essential to possess relevant information about its current state.…”

Section: Introductionmentioning

confidence: 99%

Application of an Memetic Algorithm to Placement of Sensors for Active Noise-Vibration Control

Wrona

Pawełczyk

2013

mech

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Comparison of Passive and Active Methods for Minimization of Sound Radiation by Vibrating Clamped Plate

Cited by 9 publications

References 16 publications

Exhaust Noise Reduction by Application of Expanded Collecting System in Pneumatic Tools and Machines

Exhaust Noise Reduction by Application of Expanded Collecting System in Pneumatic Tools and Machines

Parameter configuration of composite vibration isolation system using power flow and MOPSO technique

Application of an Memetic Algorithm to Placement of Sensors for Active Noise-Vibration Control

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