The continuous progress of science and technology drives the development of domestic construction machinery. Now the emergence of high-power construction machinery, at the same time also brings more and more prominent noise problem, now people pay more and more attention to the noise problem of construction machinery. This paper mainly studies the sound field optimization of construction machinery cab structure based on ergonomics and mathematical modeling. In this paper, firstly, the body structure model and the cab sound chamber model are preprocessed, and the free mode and sound solid coupling mode of the locomotive body structure and cab sound chamber model are calculated and analyzed respectively. According to the analysis results of cab acoustic package, the noise contribution degree is calculated to determine the ceiling and left component with the largest contribution. The acoustic package of the rear coaming and rear coaming is optimized.

Memon Christoph. Sound Field Optimization of Construction Machinery Cab Structure based on Ergonomics and Mathematical Modeling. Kinetic Mechanical Engineering (2021), Vol. 2, Issue 3: 20-29. https://doi.org/10.38007/KME.2021.020303.

[1] Jiao R, Nguyen V, Zhang J. Acoustic-structure modeling and analysis of an engineering machinery cab based on the hybrid method and experimental investigations. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2020, 42(4):1-8. https://doi.org/10.1007/s40430-020-2252-3

[2] Neer P, Quesson B, Es M, et al. Optimization of acoustic coupling for bottom actuated scattering based subsurface scanning probe microscopy. Review of Scientific Instruments, 2019, 90(7):073705. https://doi.org/10.1063/1.5097387

[3] Malekabadi A J, Khojastehpour M. Optimization of stereo vision baseline and effects of canopy structure, pre-processing and imaging parameters for 3D reconstruction of trees. Machine Vision and Applications, 2021, 33(6):1-15. https://doi.org/10.1007/s00138-022-01333-7

[4] Talebitooti R, Zarastvand M, Darvishgohari H. Multi-objective optimization approach on diffuse sound transmission through poroelastic composite sandwich structure. Journal of Sandwich Structures and Materials, 2021, 23(4):1221-1252. https://doi.org/10.1177/1099636219854748

[5] Veena S, Aravindhar D J. Sound Classification System Using Deep Neural Networks for Hearing Impaired People. Wireless Personal Communications, 2021, 126(1):385-399. https://doi.org/10.1007/s11277-022-09750-7

[6] Rath S, Dash S. Momentum transport properties of a hot and dense QCD matter in a weak magnetic field. The European Physical Journal C, 2021, 82(9):1-18. https://doi.org/10.1140/epjc/s10052-022-10757-4

[7] Sato H, Sato H, Morimoto M. Optimization of auditory guide signals in public spaces on the basis of sound localization abilities in humans. Acoustical Science and Technology, 2020, 41(1):121-128. https://doi.org/10.1250/ast.41.121

[8] Smorodin V S, Prokhorenko V A. Method Of Construction Of A Neuroregulator Model When Optimizing The Control Structure Of A Technological Cycle. Doklady Bguir, 2019(7-8):125-132. https://doi.org/10.35596/1729-7648-2019-126-8-125-132

[9] Le V Q, Zhang J, Liem N V, et al. Experimental modal analysis and optimal design of cab's isolation system for a single drum vibratory roller. Vibroengineering PROCEDIA, 2020, 31(6):52-56. https://doi.org/10.21595/vp.2020.21325

[10] Berthold J, Kolouch M, Wittstock V, et al. Aspects of the investigation of the dynamic behaviour of machine tools by operational modal analysis. MM Science Journal, 2017, 2017(5):2013-2019. https://doi.org/10.17973/MMSJ.2017_12_201777

[11] Ioni A, MD Iozsa, Stan C, et al. Analytical crash analysis of heavy truck cabin structure according to regulation ECE-R29. IOP Conference Series: Materials Science and Engineering, 2021, 1235(1):012032 (6pp). https://doi.org/10.1088/1757-899X/1235/1/012032

[12] Choi G, Chang S. Degree-of-Freedom-Based Reduction Method for Modal Analysis of Repeated Structure. Journal of the Computational Structural Engineering Institute of Korea, 2021, 34(2):71-75. https://doi.org/10.7734/COSEIK.2021.34.2.71

[13] Pappalardo C M, Guida D. System identification and experimental modal analysis of a frame structure. Engineering Letters, 2018, 26(1):56-68.

[14] Jiao R, Nguyen V, Zhang J. Acoustic-structure modeling and analysis of an engineering machinery cab based on the hybrid method and experimental investigations. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2020, 42(4):1-8. https://doi.org/10.1007/s40430-020-2252-3

[15] Efimik V, Chekalkin A, Golovkin A. Identification Of The Calculation Finite Elemente Model Of The Sound-Absorbing Structurebased On Modal Analysis. Perm National Research Polytechnic University Aerospace Engineering Bulletin, 2018(54):26-40. https://doi.org/10.15593/2224-9982/2018.54.03

[16] Baskaran K, Srinivasan K. Aeroacoustic modal analysis of underexpanded pipe jets with and without an upstream cavity. Physics of Fluids, 2021, 33(1):016108. https://doi.org/10.1063/5.0035133

[17] Cockrill M, Chowanietz M. Detailed experimental modal analysis of a trumpet: An application of laser Doppler vibrometry. Journal of the Acoustical Society of America, 2017, 142(4):2543-2543. https://doi.org/10.1121/1.5014297

[18] Bielski P, Kujawa M. Nonlinear Modeling in Time Domain Numerical Analysis of Stringed Instrument Dynamics. AIP Conference Proceedings, 2017, 1822(1):1-7. https://doi.org/10.1063/1.4977677