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بررسی عددی تأثیر خواص مکانیکی مواد دارای تطبیق امپدانس با محیط زیر آب بر ضریب جذب صوت با روش اجزای محدود | ||
| نشریه مهندسی مکانیک امیرکبیر | ||
| دوره 57، شماره 1، 1404، صفحه 43-68 اصل مقاله (1.43 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/mej.2025.23777.7811 | ||
| نویسندگان | ||
| امیرحسین مرادی؛ ابوالفضل حسنی بافرانی* | ||
| دانشکده مهندسی مکانیک، دانشگاه تفرش، تفرش، ایران | ||
| چکیده | ||
| در این مطالعه، پنج ماده که برای طراحی و ساخت جاذبهای آکوستیکی مورد استفاده قرار میگیرند، مورد بررسی قرار گرفتهاند. از روش اجزای محدود به کمک نرمافزار کامسول برای اندازهگیری ضریب جذب صوت زیر آب استفاده شده است. نحوه ایجاد شبیهسازی به صورت متقارن محوری برای کاهش حجم محاسبات، توضیح داده شده است؛ همچنین اعمال شرایط مرزی و تولید امواج آکوستیکی نیز مورد بررسی قرار گرفته است و تأثیر خواص مکانیکی مواد، از جمله مدول یانگ، چگالی و ضریب تلفات، بر ضریب جذب صوت زیر آب تحلیل شده است. نتایج نشان میدهد با بیشتر شدن مدول یانگ موادی همچون لاستیک بوتادین نیتریل که ذاتا مدول یانگ پایینی دارند؛ ضریب جذب صوت در محدوده فرکانسی 0.2 تا 10 کیلوهرتز به صورت چشمگیری نسبت به سایر مواد افزایش مییابد. مواد دارای ضریب تلفات بالا نسبت به سایر مواد ضریب جذب صوت را در فرکانسهای زیر 1 کیلوهرتز افزایش میدهند. موادی همچون لاستیک استایرون بوتادین که چگالی نزدیک به چگالی آب را دارند، تطبیق امپدانس مناسبی با محیط زیر آب را دارند و ضریب جذب صوت در حد عالی در بازه فرکانسی 2 تا 10 کیلوهرتز را دارند که این امر به سایر خواص مواد هم وابسته است. | ||
| کلیدواژهها | ||
| جذب صوت زیر آب؛ مدول یانگ؛ چگالی؛ ضریب تلفات؛ تطبیق امپدانس | ||
| عنوان مقاله [English] | ||
| Numerical investigation of the effect of mechanical properties of impedance-matched materials with the underwater environment on acoustic absorption using the finite element method. | ||
| نویسندگان [English] | ||
| Amir Hosein Moradi؛ Abolfazl Hasani Baferani | ||
| Department of Mechanical Engineering, Tafresh University, Tafresh, Iran | ||
| چکیده [English] | ||
| In this study, five materials used for the design and manufacture of acoustic absorbers have been investigated. The finite element method has been used with the help of COMSOL software to measure the underwater sound absorption coefficient. The method of creating an axisymmetric simulation to reduce the volume of calculations has been explained; the application of boundary conditions and the generation of acoustic waves have also been investigated, and the effect of the mechanical properties of the materials, including Young's modulus, density, and loss coefficient, on the underwater sound absorption coefficient has been analyzed. The results show that with the increase in the Young's modulus of materials such as nitrile butadiene rubber, which inherently has a low Young's modulus; the sound absorption coefficient in the frequency range of 0.2 to 10 kHz increases significantly compared to other materials. Materials with a high loss coefficient increase the sound absorption coefficient at frequencies below 1 kHz compared to other materials. Materials such as styrene-butadiene rubber, which has a density close to that of water, have a good impedance match with the underwater environment and have excellent sound absorption coefficients in the frequency range of 2 to 10 kHz, which also depends on other material properties. | ||
| کلیدواژهها [English] | ||
| Underwater Sound Absorption, Young's Modulus, Density, Loss Coefficient, Impedance Matching | ||
| مراجع | ||
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[1] Sayadi, seyf, Abniki, Classification and identification of underwater targets based on diffuse sounds, arine Engineering Scientific-Research Journal, 13(26) (2018) 71-81 (in Persian). [2] Saadatiyan, Saghayi, Investigation, identification and design of required signals in active sonar transmitter, 16th Maritime Industry Conference, (2014) (in Persian). [3] C. Daniels, N. Perera, Investigation of Alberich Coating to Optimise Acoustic Stealth of Submarines, Acoustics, 4(2) (2022) 362-381. [4] Y. Fu, H. Wang, P. Cao, Numerical design and optimization of metamaterials for underwater sound absorption at various hydrostatic pressures, Journal of Low Frequency Noise, Vibration and Active Control, 42(3) (2023) 1434-1450. [5] H. Weeratunge, Z. Shireen, S. Iyer, A. Menzel, A.W. Phillips, S. Halgamuge, R. Sandberg, E. Hajizadeh, A machine learning accelerated inverse design of underwater acoustic polyurethane coatings, Structural and Multidisciplinary Optimization, 65(8) (2022) 213. [6] S. Zhou, Z. Fang, Optimization design of acoustic performance of underwater anechoic coatings, Acoustics Australia, 50(3) (2022) 297-313. [7] M. Ranjbar, M.U. Bayer, Design of acoustic coating for underwater stealth in low-frequency ranges, Journal of the Brazilian Society of Mechanical Sciences and Engineering, 46(3) (2024) 140. [8] S. Qu, N. Gao, A. Tinel, B. Morvan, V. Romero-García, J.-P. Groby, P. Sheng, Underwater metamaterial absorber with impedance-matched composite, Science Advances, 8(20) (2022) 4206. [9] X. Fang, X. Yin, J. Wu, Y. Li, H. Li, W. Wang, Y. Li, W. Wu, Underwater metagratings for sub-kilohertz low frequency and broadband sound absorption, International Journal of Mechanical Sciences, 260 (2023) 108630. [10] N. Gao, H. Yu, J. Liu, J. Deng, Q. Huang, D. Chen, G. Pan, Experimental investigation of composite metamaterial for underwater sound absorption, Applied Acoustics, 211 (2023) 109466. [11] Y. Gu, H. Zhong, B. Bao, Q. Wang, J. Wu, Experimental investigation of underwater locally multi-resonant metamaterials under high hydrostatic pressure for low frequency sound absorption, Applied Acoustics, 172 (2021) 107605. [12] H. Zou, L. Su, Y. Zhang, M. Zhang, W. Yu, X. Wang, X. Xia, H. Chen, X. Zhang, A. Zhao, A novel broadband underwater sound absorption metastructure with multi-oscillators, International Journal of Mechanical Sciences, 271 (2024) 109137. [13] N. Gao, Y. Zhang, A low frequency underwater metastructure composed by helix metal and viscoelastic damping rubber, Journal of Vibration and Control, 25(3) (2019) 538-548. [14] R. Zhang, A low frequency underwater meta structure composed by helix metal and viscoelastic damping rubber, The Journal of the Acoustical Society of America, 144(3_Supplement) (2018) 1763-1763. [15] K. Shi, G. Jin, R. Liu, T. Ye, Y. Xue, Underwater sound absorption performance of acoustic metamaterials with multilayered locally resonant scatterers, Results in Physics, 12 (2019) 132-142. [16] K. Shi, G. Jin, T. Ye, Y. Zhang, M. Chen, Y. Xue, Underwater sound absorption characteristics of metamaterials with steel plate backing, Applied Acoustics, 153 (2019) 147-156. [17] T. Wang, J. Liu, M. Chen, Underwater sound absorption of a meta-absorption layer with double negativity, Applied Acoustics, 181 (2021) 108182. [18] Z. Zhang, Y. Huang, J. Wang, Z. Li, S. Zhang, X. Zhang, Global Sound Absorption Prediction for a Composite Coating Laid on an Underwater Submersible in Debonding States, Journal of Marine Science and Engineering, 11(9) (2023) 1671. [19] D. Yin, Y. Liu, Y. Wang, Y. Gao, S. Hu, L. Liu, X. Zhao, Finite Element Solution for Dynamic Mechanical Parameter Influence on Underwater Sound Absorption of Polyurethane-Based Composite, International Journal of Molecular Sciences, 23(23) (2022) 14760. [20] Y. Zhu, X. Zhao, Z. Mei, H. Li, D. Wu, Investigation of the underwater absorption and reflection characteristics by using a double-layer composite metamaterial, Materials, 16(1) (2022) 49. [21] K. Li, Z. Zhou, Z. Huang, Y. Lin, M. Chen, P. Yang, Y. Li, Underwater sound absorption characteristic of the rubber core sandwich structure with funnel-shaped cavities reinforced by carbon fiber columns, Applied Acoustics, 208 (2023) 109375. [22] H.-C. Lin, S.-C. Lu, H.-H. Huang, Evaluation of a Hybrid Underwater Sound-Absorbing Metastructure by Using the Transfer Matrix Method, Materials, 16(4) (2023) 1718. [23] X. Pan, X. Fang, X. Yin, Y. Li, Y. Pan, Y. Jin, Gradient index metamaterials for broadband underwater sound absorption, APL Materials, 12(3) (2024) 031000. [24] K. Dong, Y. Lv, P. Wang, W. Cheng, H. Li, Acoustic properties of underwater acoustic metamaterials based on multi-physical field coupling model, in: Journal of Physics: Conference Series, IOP Publishing, 2024, pp. 012006. [25] X. Jia, G. Jin, T. Ye, X. Ma, An efficient underwater absorber using pentamode metamaterials for broadband frequency, Journal of Vibration and Control, 30(7-8) (2024) 1759-1771. [26] S. Carcangiu, A. Montisci, M. Usai, Modeling ultrasounds for nondestructive testing applications, Springer, 2015. [27] J. Hu, Y. Lin, Z. Zhou, X. Cao, Q. Chi, W. Wu, Study on the low-frequency and broadband sound absorption performance of an underwater anechoic layer with novel design, Journal of Marine Science and Engineering, 11(2) (2023) 409. | ||
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