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Journal articles on the topic 'Aerospace engineering|Mechanical engineering|Acoustics'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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1

Donders, Stijn, Laszlo Farkas, Michael Hack, et al. "Assessment of Uncertainty for Structural and Mechatronics Engineering Applications." Applied Mechanics and Materials 104 (September 2011): 145–59. http://dx.doi.org/10.4028/www.scientific.net/amm.104.145.

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Nowadays, mechanical industries operate in a highly competitive environment, therefore the process of developing a component from concept through detailed Computer-Aided Engineering (CAE) and performance validation is optimized for reduced development time and increased product performance. To continuously improve the product design and performance and reduce the costs and time to market, the design and performance engineering is shifted more and more towards virtual modeling and simulation processes from the expensive test-based design evaluations. Secondly, the booming introduction of active

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2

Paolozzi, A., and I. Peroni. "RESPONSE OF AEROSPACE SANDWICH PANELS TO LAUNCH ACOUSTIC ENVIRONMENT." Journal of Sound and Vibration 196, no. 1 (1996): 1–18. http://dx.doi.org/10.1006/jsvi.1996.0464.

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3

Vahdati, N. "A Detailed Mechanical Model of a Double Pumper Fluid Mount." Journal of Vibration and Acoustics 120, no. 2 (1998): 361–70. http://dx.doi.org/10.1115/1.2893839.

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Conventional passive elastomenc mounts have been used as noise and vibration isolators in the automotive and aircraft industries for many years. For even better noise and vibration isolation, passive fluid mounts have been replacing elastomeric mounts in both the automotive and aerospace industries during the past few years. With more increase in the popularity of fluid mounts, it is important to characterize the dynamics of the fluid mounts more accurately. Many papers have been published on the modeling of these devices, but mostly on single pumper fluid mounts. In this paper, we focus on do

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4

Keane, A. J., and A. P. Bright. "PASSIVE VIBRATION CONTROL VIA UNUSUAL GEOMETRIES: EXPERIMENTS ON MODEL AEROSPACE STRUCTURES." Journal of Sound and Vibration 190, no. 4 (1996): 713–19. http://dx.doi.org/10.1006/jsvi.1996.0086.

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5

Noël, J. P., L. Renson, and G. Kerschen. "Complex dynamics of a nonlinear aerospace structure: Experimental identification and modal interactions." Journal of Sound and Vibration 333, no. 12 (2014): 2588–607. http://dx.doi.org/10.1016/j.jsv.2014.01.024.

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6

Gourinat, Yves, and Victorien Belloeil. "A Truncated Low Approach of Intrinsic Linear and Nonlinear Damping in Thin Structures." Journal of Vibration and Acoustics 129, no. 1 (2006): 32–38. http://dx.doi.org/10.1115/1.2358153.

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An adaptive approach of vibrating thin structures is proposed here. The method consists in applying an equivalent adimensional damping ratio to each potential resonance. This ratio is deduced from experimental data obtained in vacuum facility, in relation with frequencies, for several structural technologies. Consequently, it is possible to calculate the structure in a linear nondissipative context, valid out of resonance bands, and truncated in those bands. Thus, the equivalent damping ratio is directly used to define adimensional resonance truncation bandwith and level. The contribution cons

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7

Kim, C., A. B. Palazzolo, A. Kascak, and G. Brown. "Eddy Current Effects on the Design of Rotor-Magnetic Bearing Systems." Journal of Vibration and Acoustics 117, B (1995): 162–70. http://dx.doi.org/10.1115/1.2838658.

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The recent growth of magnetic bearing applications in the chemical, utility and aerospace industries requires more accurate design tools to insure reliable and effective operation as components of the overall rotor bearing system. This paper provides a novel approach for simulating a flexible rotor suspended in magnetic bearings, accounting for eddy current effects. The manuscript discusses some magnetic bearing fundamentals, leading up to the new methods for modeling. Test results show very good correlation with theory and confirm the importance of considering eddy current effects. Surface co

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8

Zimmerman, D. C., S. W. Smith, H. M. Kim, and T. J. Bartkowicz. "An Experimental Study of Structural Health Monitoring Using Incomplete Measurements." Journal of Vibration and Acoustics 118, no. 4 (1996): 543–50. http://dx.doi.org/10.1115/1.2888333.

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In this paper, algorithmic approaches to enhance structural health monitoring capability when faced with incomplete measurements are addressed. The incomplete measurement problem has two aspects: (i) experimental measurement of a lesser number of modes of vibration than that of the analytical model and (ii) experimental measurement of a lesser number of degrees of freedom than that of the analytical model. Studies comparing model reduction, eigenvector expansion, and a hybrid model reduction/eigenvector expansion to address the second contribution are performed using experimental data. These a

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9

Olson, Steven E., Martin P. DeSimio, and Mark M. Derriso. "Beam Forming of Lamb Waves for Structural Health Monitoring." Journal of Vibration and Acoustics 129, no. 6 (2007): 730–38. http://dx.doi.org/10.1115/1.2731404.

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Structural health monitoring techniques are being developed to reduce operations and support costs, increase availability, and maintain safety of current and future air vehicle systems. The use of Lamb waves, guided elastic waves in a plate, has shown promise in detecting localized damage, such as cracking or corrosion, due to the short wavelengths of the propagating waves. Lamb wave techniques have been utilized for structural health monitoring of simple plate and shell structures. However, most aerospace structures are significantly more complex and advanced techniques may be required. One a

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10

Liu, T. S., and J. C. Lin. "Forced Vibration of Flexible Body Systems: A Dynamic Stiffness Method." Journal of Vibration and Acoustics 115, no. 4 (1993): 468–76. http://dx.doi.org/10.1115/1.2930374.

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Due to the development of high speed machinery, robots, and aerospace structures, the research of flexible body systems undergoing both gross motion and elastic deformation has seen increasing importance. The finite element method and modal analysis are often used in formulating equations of motion for dynamic analysis of the systems which entail time domain, forced vibration analysis. This study develops a new method based on dynamic stiffness to investigate forced vibration of flexible body systems. In contrast to the conventional finite element method, shape functions and stiffness matrices

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11

Huang, X. L., and C. J. Radcliffe. "Probability Distribution of Statistical Energy Analysis Model Responses Due to Parameter Randomness." Journal of Vibration and Acoustics 120, no. 3 (1998): 641–47. http://dx.doi.org/10.1115/1.2893877.

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The Statistical Energy Analysis (SEA) methodology has been widely used in aerospace, ship and automotive industry for high frequency noise analysis and acoustic designs. SEA models are treated here as baseline representations of a population of models for systems such as automotive vehicles. SEA responses from the population of all possible models for a vehicle have a random distribution because of the unavoidable uncertainty in the physical parameters due to fabrication imperfection, manufacturing and assembly variations. The random characteristics of the SEA responses can be described by the

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12

McAdams, Daniel A., and Irem Y. Tumer. "Toward Intelligent Fault Detection in Turbine Blades: Variational Vibration Models of Damaged Pinned-Pinned Beams." Journal of Vibration and Acoustics 127, no. 5 (2004): 467–74. http://dx.doi.org/10.1115/1.2013296.

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Inaccuracies in the modeling assumptions about the distributional characteristics of the monitored signatures have been shown to cause frequent false positives in vehicle monitoring systems for high-risk aerospace applications. To enable the development of robust fault detection methods, this work explores the deterministic as well as variational characteristics of failure signatures. Specifically, we explore the combined impact of crack damage and manufacturing variation on the vibrational characteristics of turbine blades modeled as pinned-pinned beams. The changes in the transverse vibratio

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13

Kammer, Daniel C., Joseph Cessna, and Andrew Kostuch. "A Generalization of Effective Mass for Selecting Free–Free Target Modes." Journal of Vibration and Acoustics 129, no. 1 (2006): 121–27. http://dx.doi.org/10.1115/1.2424980.

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One of the most important tasks in pretest analysis and modal survey planning is the selection of target modes. The target modes are those mode shapes that are determined to be dynamically important using some definition. While there are many measures of dynamic importance, one of the measures that has been of greatest interest to structural dynamicists, is the contribution of each mode to the dynamic loads at an interface. Dynamically important modes contribute significantly to the interface loads and must be retained in any reduced analytical representation. These modes must be identified du

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14

Arakere, N. K., and C. Nataraj. "Vibration of High-Speed Spur Gear Webs." Journal of Vibration and Acoustics 120, no. 3 (1998): 791–800. http://dx.doi.org/10.1115/1.2893899.

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High cycle fatigue loading of gear webs due to in-plane stresses, caused by forced excitation resulting from centrifugal loading and dynamic tooth loads, has been known to cause radial fatigue cracks. This is especially prevalent in high-speed gears used in aerospace applications, with small web thickness, for weight reduction. Radial cracks have also been observed to originate at the outer edge of lightening holes machined in gear webs for weight reduction. This paper presents an analytical treatment of the in-plane vibration of high-speed gear webs resulting from rotational effects and perio

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15

Mechel, F. P. "Formulas of Acoustics." Noise Control Engineering Journal 57, no. 1 (2009): 43. http://dx.doi.org/10.3397/1.3059785.

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16

Blauert, Jens, and Ning Xiang. "Acoustics for Engineers." Noise Control Engineering Journal 57, no. 1 (2009): 47. http://dx.doi.org/10.3397/1.3067696.

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17

Kleiner, Mendel, David Lloyd Klepper, Rendell R. Torres, and Leo L. Beranek. "Worship Space Acoustics." Noise Control Engineering Journal 59, no. 1 (2011): 105. http://dx.doi.org/10.3397/1.3517099.

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18

Tapia-González, Pablo E., and Diego F. Ledezma-Ramírez. "Experimental characterisation of dry friction isolators for shock and vibration." Journal of Low Frequency Noise, Vibration and Active Control 36, no. 1 (2017): 83–95. http://dx.doi.org/10.1177/0263092317693509.

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Shock and vibration are a source of failures in harsh environments such as military, naval and aerospace applications; thus, the use of vibration isolators is extended. Cable isolators are known for their high-energy storage and dissipation properties making them suitable for shock isolation and low frequency vibration. Such isolators present nonlinear stiffness in different directions such as compression, roll and shear, as well as dry friction damping. Although their use is extended, the knowledge regarding their dynamic response under shock loading is very limited. This work presents an ove

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19

Bruneau, Michel, and Catherine Potel. "Materials and Acoustics Handbook." Noise Control Engineering Journal 58, no. 3 (2010): 342. http://dx.doi.org/10.3397/1.3383083.

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20

Kuttruff, Heinrich, and Pascal Everton. "Room Acoustics, 5th Edition." Noise Control Engineering Journal 58, no. 4 (2010): 464. http://dx.doi.org/10.3397/1.3455049.

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21

Muehleisen, Ralph T. "Architectural Acoustics by Marshall Long." Noise Control Engineering Journal 55, no. 4 (2007): 427. http://dx.doi.org/10.3397/1.2750436.

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22

Liang, Xu, Yu Deng, Xue Jiang, et al. "Three-dimensional semi-analytical solutions for the transient response of functionally graded material cylindrical panels with various boundary conditions." Journal of Low Frequency Noise, Vibration and Active Control 39, no. 4 (2019): 1002–23. http://dx.doi.org/10.1177/1461348419855807.

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In this paper, a 3D semi-analytical method is proposed by introducing the Durbin’s Laplace transform, as well as its numerical inversion method, state space approach and differential quadrature method to analyse the transient behaviour of functionally graded material cylindrical panels. Moreover, to investigate the effectiveness of the proposed semi-analytical solution, four boundary conditions are used to undertake the analyses. Comparing the proposed approach with other theoretical methods from the literatures, we see better agreements in the natural frequencies. Besides, the semi-analytical

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23

Nielsen, Leif. "International Standards for Acoustics and Noise Control." Noise Control Engineering Journal 32, no. 2 (1989): 67. http://dx.doi.org/10.3397/1.2827729.

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24

Siebein, Gary W., and Michael Barron. "Auditorium Acoustics and Architectural Design, 2nd Edition." Noise Control Engineering Journal 59, no. 2 (2011): 213. http://dx.doi.org/10.3397/1.3544301.

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25

Rajavel, B., and M. G. Prasad. "Experimental studies on acoustics of corrugated tubes." Noise Control Engineering Journal 66, no. 5 (2018): 388–400. http://dx.doi.org/10.3397/1/376633.

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26

Behar, Alberto, and Jürgen Meyer. "Acoustics and the Performance of Music, Fifth Edition." Noise Control Engineering Journal 58, no. 5 (2010): 559. http://dx.doi.org/10.3397/1.3475509.

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27

Sorosiak, Eric J., Mingfeng Li, Teik C. Lim, et al. "A fast numerical formulation for simulating vehicle compartment acoustics." Noise Control Engineering Journal 57, no. 3 (2009): 291. http://dx.doi.org/10.3397/1.3140591.

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28

MacDonald, Mark A., Jessica Gullbrand, Yoshifumi Nishi, and Eric Baugh. "Notebook blower inlet flow and acoustics: Experiments and simulations." Noise Control Engineering Journal 57, no. 4 (2009): 348. http://dx.doi.org/10.3397/1.3151971.

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29

Lurton, Xavier, and J. M. Cuschieri. "An Introduction to Underwater Acoustics—Principles and Applications, (Second Edition)." Noise Control Engineering Journal 59, no. 1 (2011): 106. http://dx.doi.org/10.3397/1.3525563.

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30

Roys, Byron, and Werner Soedel. "On the Acoustics of Small High-Speed Compressors: A Review and Discussion." Noise Control Engineering Journal 32, no. 1 (1989): 25. http://dx.doi.org/10.3397/1.2827725.

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31

Mahapatra, Kavikant, and SK Panigrahi. "A new Fourier series method and displacement function for in-plane vibration and power flow characteristics analysis of isotropic rectangular plates." Noise & Vibration Worldwide 50, no. 6 (2019): 176–94. http://dx.doi.org/10.1177/0957456519853813.

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The generation of in-plane vibration in plates is an important issue and frequently occurs due to the presence of excitations in the ship’s hull due to turbulent fluid flows, turbulent airflow excitation on aerospace structures, gear system subjected to axial excitation, assemblies housing piezoelectric crystals and sandwiched plates, and so on. The present analysis aims to establish a universal and numerically efficient method for determination of in-plane vibration characteristics of isotropic rectangular plates both for conventional and general boundary conditions. The new in-plane Fourier

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32

Tanabe, Yosuke, and Akira Inoue. "Sound intensity transfer path analysis and its application to analyze the acoustics in vehicle interior." Noise Control Engineering Journal 66, no. 3 (2018): 222–30. http://dx.doi.org/10.3397/1/376619.

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33

Bies, David A., Colin H. Hansen, and Tim Kelsall. "Engineering Noise Control, Fourth Edition." Noise Control Engineering Journal 58, no. 4 (2010): 465. http://dx.doi.org/10.3397/1.3455051.

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34

Yoshida, Takumi, Takeshi Okuzono, and Kimihiro Sakagami. "Numerically stable explicit time-domain finite element method for room acoustics simulation using an equivalent impedance model." Noise Control Engineering Journal 66, no. 3 (2018): 176–89. http://dx.doi.org/10.3397/1/376615.

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35

Kaium, Sk Abdul, Sayed Abul Hossain, and Jafar Sadak Ali. "Modal parameter extraction from measured signal by frequency domain decomposition (FDD) technique." International Journal of Structural Integrity 11, no. 2 (2019): 324–37. http://dx.doi.org/10.1108/ijsi-06-2019-0062.

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Purpose The purpose of this paper is to highlight that the need for improved system identification methods within the domain of modal analysis increases under the impulse of the broadening field of applications, e.g., damage detection and vibro-acoustics, and the increased complexity of today’s structures. Although significant research efforts during the last two decades have resulted in an extensive number of parametric identification algorithms, most of them are certainly not directly applicable for modal parameter extraction. So, based on this, the aim of the present work is to develop a te

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36

Muehleisen, Ralph T. "A description of the acoustic requirements in LEED for Schools and a comparison to the ANSI S12.60 Classroom Acoustics Standard." Noise Control Engineering Journal 56, no. 5 (2008): 365. http://dx.doi.org/10.3397/1.2976331.

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37

Ver, Istvan L., and Leo L. Beranek. "Noise and Vibration Control Engineering, Second Edition." Noise Control Engineering Journal 56, no. 4 (2008): 310. http://dx.doi.org/10.3397/1.2968353.

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38

Scheuren, Joachim. "Engineering applications of active sound and vibration control." Noise Control Engineering Journal 53, no. 5 (2005): 197. http://dx.doi.org/10.3397/1.2839256.

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39

Jiang, Wenwei, and Teik C. Lim. "Time-domain two-substructure transfer path analysis of transient dynamic response in mechanical systems with weak nonlinear couplings." Noise Control Engineering Journal 58, no. 4 (2010): 357. http://dx.doi.org/10.3397/1.3455055.

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40

Kale, Ã. AkboÄŸa, Ä° Bayram, and S. Baradan. "Evaluating noise exposure levels of laboratories in civil engineering education." Noise Control Engineering Journal 67, no. 2 (2019): 69–79. http://dx.doi.org/10.3397/1/37677.

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41

Abdollahzadeh Jamalabadi, M. Y., and Moon K. Kwak. "Dynamic modeling of a galloping structure equipped with piezoelectric wafers and energy harvesting." Noise Control Engineering Journal 67, no. 3 (2019): 142–54. http://dx.doi.org/10.3397/1/376713.

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This study presents the analytical solution and experimental investigation of the galloping energy harvesting from oscillating elastic cantilever beam with a rigid mass. A piezoelectric wafer was attached to galloping cantilever beam to harvest vibrational energy in electric charge form. Based on Euler-Bernoulli beam assumption and piezoelectric constitutive equation, kinetic energy and potential energy of system were obtained for the proposed structure. Virtual work by generated charge and galloping force applied onto the rigid mass was obtained based on Kirchhoff's law and quasistatic assump

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42

Wing, Elspeth, Steven Herr, Alexander Petty, et al. "Case study: Purdue University's "Clapping Circle": An acoustical investigation." Noise Control Engineering Journal 69, no. 4 (2021): 288–300. http://dx.doi.org/10.3397/1/376928.

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The perplexing acoustical properties of a landscape architecture feature of Academy Park on the Purdue University campus have long been the subject of speculation. The feature, known informally as the "Clapping Circle", consists of sixty-six concentric rings of stone tiles. When someone claps while at the middle of the circle, they hear a high-pitched squeak immediately afterwards. Experiments were conducted by the Purdue student chapter of the Acoustical Society of America to characterize this effect. The response to a clap played from an omnidirectional speaker placed at the center of the ci

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43

Salomons, Erik M., and Taoufik Bakri. "Fluctuating traffic noise levels calculated from time-dependent traffic data: an engineering approach." Noise Control Engineering Journal 66, no. 5 (2018): 432–45. http://dx.doi.org/10.3397/1/376637.

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44

Wang, Chenguang, and Weikang Jiang. "Identification of partially coherent sound sources for centrifugal fan." Noise Control Engineering Journal 69, no. 1 (2021): 66–76. http://dx.doi.org/10.3397/1/37696.

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The signal model with multiple inputs and single output (MISO) is often used for investigating sound sources of vehicles and mechanical equipment, in which transfer path analysis (TPA) and operational transfer path analysis (OTPA) procedure are well known in industry. Sources are completely coherent, as well as completely incoherent in TPA and OTPA models. However, some mechanical devices like centrifugal fans contain not only structure-borne and air-borne sound but also vibrational source and acoustical source. The sources may be partially coherent and cannot be calculated using traditional m

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45

Sakamoto, Shuichi, Kouhei Fujisawa, Shunsuke Watanabe, Taku Watanabe, Ryota Kominami, and Yuki Akiba. "Small plate vibration sound-absorbing device with a clearance and without surrounding restriction: Theoretical analysis and experiment." Noise Control Engineering Journal 69, no. 1 (2021): 30–38. http://dx.doi.org/10.3397/1/37693.

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This article focuses on the theoretical analysis and experiment of a small plate vibration sound-absorbing device with a clearance and without surrounding restriction. Generally, a plate vibration sound-absorbing device absorbs sound in a frequency range lower than that of porous material, which is used as a sound-absorbing material, and its sound absorption coefficient is small. Furthermore, note that the plate is fixed at the periphery in a conventional plate vibration sound-absorbing device. Hence, when the plate is small, vibration barely occurs and effective sound-absorbing effect is not

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46

Kumar, V. Ram, and M. L. Munjal. "Plane wave frequency domain analysis of resonance free pipes with moving medium." Noise Control Engineering Journal 67, no. 6 (2019): 467–82. http://dx.doi.org/10.3397/1/376743.

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Mufflers are inevitably a significant part of the exhaust systems of automobiles for bringing down the tail-pipe noise levels. Nevertheless, howsoever well-optimized a reasonably large muffler volume be (with respect to insertion loss, back pressure, breakout noise, flow noise, etc.), there are inevitably acoustic modes present, which lead to peaks in the noise levels and corresponding troughs in the insertion loss (IL) of an exhaust baseline. These acoustic modes are: (i) muffler internal modes, (ii) axial pipe modes and (iii) system modes. Of these, the axial pipe mode is the most detrimenta

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47

Iannace, Gino, Amelia Trematerra, and Giuseppe Ciaburro. "Case study: Automated recognition of wind farm sound using artificial neural networks." Noise Control Engineering Journal 68, no. 2 (2020): 157–67. http://dx.doi.org/10.3397/1/376814.

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Wind energy has been one of the most widely used forms of energy since ancient times, with it being a widespread type of clean energy, which is available in mechanical form and can be efficiently transformed into electricity. However, wind turbines can be associated with concerns around noise pollution and visual impact. Modern turbines can generate more electrical power than older turbines even if they produce a comparable sound power level. Despite this, protests from citizens living in the vicinity of wind farms continue to be a problem for those institutions which issue permits. In this ar

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48

Gibbs, Barry Marshall, and Michel Villot. "Structure-borne sound in buildings: Advances in measurement and prediction methods." Noise Control Engineering Journal 68, no. 1 (2020): 1–20. http://dx.doi.org/10.3397/1/37681.

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This article coincides with recent publications of international standards, which provide methods of predicting the performance of both heavyweight and lightweight buildings in terms of airborne sound insulation and impact sound isolation, from the performance of individual elements such as walls and floors. The performances of the elements are characterized by the sound reduction index and the impact sound pressure level. To predict the sound pressure level due to vibrating sources (i.e., mechanical installations, water services and other appliances), source data are required in a form approp

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49

Sen, Osman Taha, and Rajendra Singh. "Dynamics of a simplified nonlinear model offering insights into the hammering type brake squeal initiation process." Noise Control Engineering Journal 69, no. 3 (2021): 243–61. http://dx.doi.org/10.3397/1/376924.

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This article develops a simplified mechanical system model that offers insights into the hammering type brake squeal initiation process while overcoming a void in the literature. The proposed formulation derives a nonlinear two-degree-of-freedom model where a mass is in contact with a rigid frictional surface that moves with constant velocity. The kinematic nonlinearities arise from an arrangement of springs that support the mass, as well as from contact loss between the mass and frictional surface. First, the nonlinear governing equations are numerically solved for several normal force vector

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50

Bahtiarian, Michael, and Raymond Fischer. "Underwater radiated noise of the NOAA ship Oscar Dyson." Noise Control Engineering Journal 54, no. 4 (2006): 224. http://dx.doi.org/10.3397/1.2219891.

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