The Finite Element Technique for Modelling of Pipe System Vibroacoustical Characteristics

Mironova, Tatiana B.; Prokofiev, Andrey; Sverbilov, Victor

doi:10.1016/j.proeng.2017.02.313

Cited by 6 publications

(4 citation statements)

References 2 publications

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“…The dimensions of the ferrite magnet are 22mm (inner diameter), 45mm (outer diameter), and 8 mm (thickness of each magnet). The vibration response of the system was taken through the accelerometer sensor which connected to LMS DAQ and LMS Test Express Software [42]. The acquired response was acceleration response of a mass spring damper system which can be integrated to obtain velocity and displacement response of the system.…”

Section: B Experimental Test Rig Of Electromagnetic Dampermentioning

confidence: 99%

Experimental Study of Different materials on Electromagnetic Damping CharacteristicsExperimental Study of Different Materials on Electromagnetic Damping Characteristics

Yusoff,

Zaidi,

Ishak

et al. 2023

Int. J. Adv. Sci. Eng. Inf. Technol.

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Electromagnetic damper has been given special attention by many researchers and thus is among the important research areas in vibration system. This paper examines electromagnetic damper effect through simulation and experimental study. A vibration test rig incorporating a simple electromagnetic damper is designed and tested to examine the impact of electromagnetic force.The vibration system test rig can be operated as free vibration as well as a forced vibration system. In the simulation phase, the MATLAB model of the electromagnetic damper system is developed, considering its dynamic behavior. This simulation allows for the evaluation of the damper's effectiveness in reducing vibration amplitudes and settling times. Subsequently, an experimental setup is constructed to validate the simulation results. One of the key findings of this research is the comparison of different materials used as the outer cylinder of the electromagnetic damper system. The results indicate that aluminum exhibits a superior damping coefficient value of 2.8 kgs-1 compared to Nylon, which has a damping coefficient of 1.9 kgs-1. This observation highlights the significant impact of the damper's material choice on the vibration system's amplitude and settling time. The implementation of aluminum as the outer cylinder results in reduced amplitudes and quicker settling times in the vibration system. The combination of simulation and experimental studies enhances the understanding of the electromagnetic force's influence and validates the findings. The comparison of different materials for the damper's outer cylinder underscores the importance of material selection in achieving optimal damping coefficients and improved vibration system performance.

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Section: B Experimental Test Rig Of Electromagnetic Dampermentioning

confidence: 99%

Experimental Study of Different materials on Electromagnetic Damping CharacteristicsExperimental Study of Different Materials on Electromagnetic Damping Characteristics

Yusoff,

Zaidi,

Ishak

et al. 2023

Int. J. Adv. Sci. Eng. Inf. Technol.

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show abstract

“…Many experimental and theoretical studies have analyzed the dynamic characteristics of the planetary gear. For example, the inherent vibration characteristics of a planetary gear system are proposed, and a time-varying dynamic model of a multi-DoF system is established, and its natural frequency and mode shape is calculated (Morgado et al, 2008). The effects of rotation speed of a planetary frame and the supporting stiffness of a planetary gear on the natural characteristics of the system are also studied numerically.…”

Section: Introductionmentioning

confidence: 99%

“…They have developed the model using the harmonic balance method and the Gill method. Mironova et al (2017) have analyzed the time-varying characteristics of meshing stiffness, transmission error of the PGTS, and phase problem in the meshing process. Considering the time-varying stiffness of a rolling bearing, Suslin and Pilla (2017) have established a gear-bearing coupling dynamic model of a wind turbine PGTS, and they calculated the frequency and dynamic response of the torsional vibration structure of a three-stage planetary gear.…”

Section: Introductionmentioning

confidence: 99%

Vibroacoustic characteristics analysis of a planetary gear reducer considering the exterior housing structure

et al. 2021

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Abstract. Previous studies have attempted to identify weak links in the dynamic characteristics of the planetary gear reducer (PGR) exterior body structure (EBS). Through numerical simulation, these studies analyzed the mode and natural frequencies and the vibration types of each order of the EBS. However, these scholars have never focused on the main factors affecting the dynamic characteristics of the EBS of this subject. This study in the topic has analyzed the vibroacoustic characteristics of an EBS and optimized its design using numerical simulation. Herein, the contribution of the vibration transfer path from the excitation points on the exterior body to the machine foot is emphatically revealed, and the influences of the main structural parameters on the transfer characteristics are discussed. An optimal EBS for a PGR with lower acoustic vibrations is designed in detail, and a composite EBS with damping vibration attenuation and acoustic absorption is proposed. The radiation acoustic characteristics without acoustic protection and damping materials are analyzed. These research results are implemented in order to realize the dynamic characteristics, transmission, and radiation acoustic characteristics as objects of optimization, and the structural design parameters of the PGR exterior body are deeply optimized using dynamic modification and sensitivity analysis. This topic focuses on the vibroacoustic coupling of EBS in stationary fluid and average flow field. Based on the analysis method of theoretical modeling and numerical calculation, the EBS dynamic response and vibroacoustic characteristics under the action of frontal excitation external acoustic flow field are studied, which will be beneficial to explore the comprehensive optimization design of PGR dynamic and vibroacoustic properties.

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“…They developed the model using the harmonic balance method and the Gill method. Mironova et al [4] analyzed the time-varying characteristics of meshing stiffness, transmission error of the PGTS, and phase problem in the meshing process. Considering the time-varying stiffness of a rolling bearing, Suslin and Pilla [5] established a gear-bearing coupling dynamic model of a wind turbine PGTS and they calculated the frequency and dynamic response of the torsional vibration structure of a three-stage planetary gear.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation analysis of a PGR exterior body structure considering vibroacoustic characteristics

Ji¹,

Wang²,

Wang³

et al. 2021

J. vibroeng.

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Previous studies have attempted to identify weak links in the dynamic characteristics of the planetary gear reducer (PGR) exterior body structure (EBS). Through numerical simulation, these studies analyzed the modals and natural frequencies and the vibration types of each order of the EBS. However, these scholars have never focused on the main factors affecting the dynamic characteristics of the EBS of this subject. This study in the topic has analyzed the vibroacoustic characteristics of an EBS and optimized its design using numerical simulation. Herein, the contribution of the vibration transfer path from the excitation points on the exterior body to the machine foot is emphatically revealed, and the influences of the main structural parameters on the transfer characteristics are discussed. An optimal EBS for a PGR with lower acoustic vibrations is designed in detail, and a composite EBS with damping vibration attenuation and acoustic absorption is proposed. The radiation acoustic characteristics without acoustic protection and damping materials are analyzed. These research results are implemented in order to realize the dynamic characteristics, transmission, and radiation acoustic characteristics as objects of optimization, and the structural design parameters of the PGR exterior body are deeply optimized using dynamic modification and sensitivity analysis. This topic focuses on the vibroacoustic coupling of EBS in stationary fluid and average flow field, based on the analysis method of theoretical modeling and numerical calculation, the EBS dynamic response and vibroacoustic characteristics under the action of frontal excitation external acoustic flow field are studied, which will be beneficial to explore the comprehensive optimization design of GPR dynamic and vibroacoustic properties.

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The Finite Element Technique for Modelling of Pipe System Vibroacoustical Characteristics

Cited by 6 publications

References 2 publications

Experimental Study of Different materials on Electromagnetic Damping CharacteristicsExperimental Study of Different Materials on Electromagnetic Damping Characteristics

Experimental Study of Different materials on Electromagnetic Damping CharacteristicsExperimental Study of Different Materials on Electromagnetic Damping Characteristics

Vibroacoustic characteristics analysis of a planetary gear reducer considering the exterior housing structure

Numerical simulation analysis of a PGR exterior body structure considering vibroacoustic characteristics

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