Vibration/noise optimization of a FEM railway wheel model

Efthimeros, G.A.; Photeinos, Dionysios I.; Diamantis, Z.G.; Tsahalis, D. T.

doi:10.1108/02644400210450350

Cited by 11 publications

(9 citation statements)

References 6 publications

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“…This equation agrees with the experimental results shown in [26], where a reduction of 3 dB is obtained between two wheel designs with a ratio of 50%. Using this expression with the ratios shown in Figure 30, it is found that the noise emission of the rubber resilient wheel with rubber blocks is reduced by 5.2 dB in comparison with the monobloc wheel.…”

Section: Airborne Noise Transmissionsupporting

confidence: 92%

“…Conceptually, this formula is similar to the empirical formula indicated in [26], which was provided by a wheel manufacturer.…”

Section: Figure 2 División Ofthe Wheel's Lateral Surface Into Concenmentioning

confidence: 99%

“…In a piece of research work presented by Efthimeros et al [26], the outer lateral surface of the wheel is broken down into a series of concentric rings, in which all the points vibrate in the same way, and the sound power generated by the wheel is calculated as the sum of the sound power generated by each ring.…”

Section: Assessment Of Sound Power Generated By the Wheelmentioning

confidence: 99%

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Effectiveness of resilient wheels in reducing noise and vibrations

Suarez

Chover

Rodríguez

et al. 2011

Proceedings of the Institution of Mechanical Engineers, Part F:

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This study focuses on the effectiveness of resilient wheels in reducing railway noise and vibrations, and compares the effectiveness of three types of wheels. The finite elements method has been used to characterise the vibratory behaviour of these wheels. The model has been excited with a realistic spectrum of vertical track irregularities, and a spectral analysis has been carried out. Results have been post-processed in order to estímate the sound power emitted. These calculations have been used to assess the effectiveness of the resilient wheel designs in reducing noise emitted to the environment and in propagating structural vibrations.

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Section: Airborne Noise Transmissionsupporting

confidence: 92%

“…Conceptually, this formula is similar to the empirical formula indicated in [26], which was provided by a wheel manufacturer.…”

Section: Figure 2 División Ofthe Wheel's Lateral Surface Into Concenmentioning

confidence: 99%

Section: Assessment Of Sound Power Generated By the Wheelmentioning

confidence: 99%

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Effectiveness of resilient wheels in reducing noise and vibrations

Suarez

Chover

Rodríguez

et al. 2011

Proceedings of the Institution of Mechanical Engineers, Part F:

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“…Basic equations for linear acoustics, used in the codes, are summarized as follows. The displacement of the surrounding fluid at the position x in the unbounded domain is represented as shown here, using Fourier series expansion to separate for every frequency component (9) where d ω (x) is the amplitude at x for each angular frequency component ω and ω = 2π f , where f is the frequency, t is the time, and i = √ −1. The particle velocity is then…”

Section: Bem Acoustic Analysesmentioning

confidence: 99%

Design and analysis of low-stress and low-noise lightweight railway wheel

Akama

Sasakura

Furuno

2009

Proceedings of the Institution of Mechanical Engineers, Part F:

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The finite-element and boundary-element methods were applied to develop the lowstress and low-noise lightweight railway wheel. First, stress analyses for the existing wheels under the condition of drag braking or track loading were performed. Following these analyses, a design methodology was developed and applied, leading to the development of new plate shapes of the wheel, whose stresses generated were lower than those of conventional wheels. Candidate plate shapes were selected based on the analyses. Next, eigenvalue analyses and transient dynamic analyses were carried out for the wheels. At the same time, to verify the analytical results, these wheels were manufactured and experiments implemented. Finally, acoustic analyses were performed and results compared with those obtained by field measurements. From this study, a new plate shape of the lightweight railway wheel was obtained, which reduces the radiated noise as well as the maximum stresses generated in the plate region to a remarkable extent.

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“…Further, he applied the method of combining finite element with boundary element to study the acoustic radiation characteristics of different parts of wheels and their proportions in the whole acoustic radiation of wheels [7]. Efthimeros [8] aimed to minimize the radiation noise of wheels based on genetic algorithm and conducted optimization design for the geometric shape of railway wheels. Nielsen [9] applied the experimental design method of multi-objective optimization and carried out optimization design for geometric parameters including wheel diameter, web plate thickness, lateral deviation between hubs, transition arc between rim and web plate as well as transition arc between web plate and hub so as to reduce the weight of wheels and decrease the rolling noise of wheels.…”

Section: Introductionmentioning

confidence: 99%

Influence of web plate holes on the radiation noise characteristics of wheels of the high speed train

et al. 2016

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The finite element model of wheels without holes was established to compute its free modal and compare with the experimental result. The relative error was controlled within 5 %, which indicated that the finite element model in this paper was reliable. Based on the finite element and geometric model, the acoustic boundary element model of wheels was established to compute the radiation noise of wheels under the action of radial and normal excitation forces. Results showed that the change trend and value of radiation noises of wheels were similar under the action of two kinds of excitation forces when the analyzed frequency was lower than 1421 Hz. However, the radiation noise of wheels under the action of two kinds of excitation forces was significantly different and presented obvious directivity in three planes with the increase of the analyzed frequency. Then, models of wheels with 5, 6, 9 and ellipse holes were established to compute radiation noises and conduct comparative analysis. Results showed that the radiation noise of wheels with 6 holes was relatively minimum under radial and normal excitations and did not decrease with the increase of the hole number. The radiation noise of wheels with circular holes made certain improvement, compared with the radiation noise of wheels with ellipse holes. Distribution curves for the directivity of radiation noises of various wheels were highly symmetrical in the plane and radiation noises had relatively maximum in the position of multiples of 30°. The curve for the directivity of radiation noises of wheels with 5 holes was clearly different from that of other structures in the plane.

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Vibration/noise optimization of a FEM railway wheel model

Cited by 11 publications

References 6 publications

Effectiveness of resilient wheels in reducing noise and vibrations

Effectiveness of resilient wheels in reducing noise and vibrations

Design and analysis of low-stress and low-noise lightweight railway wheel

Influence of web plate holes on the radiation noise characteristics of wheels of the high speed train

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