Structural Noise and Acoustic Characteristics Improvement of Transport Power Plants

International Conference on Mechanical Engineering, Automation and Control Systems 2017

机械制造;无线电电子学;计算机科学

Chaynov, N.D.^1 ; Markov, V.A.^1 ; Savastenko, A.A.^2

Bauman Moscow State Technical University, 2-ya Baumanskaya St. 5, Moscow

105005, Russia^1

Russian University of Peoples' Friendship, Miklukho-Maklay St. 7, Moscow

117198, Russia^2

关键词: Acoustic characteristic;    Body parts;    Boundary elements method;    Complex bodies;    Outer surface;    Sound emission;    Structural elements;    Structural noise;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/327/2/022069/pdf
DOI  :  10.1088/1757-899X/327/2/022069

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Noise reduction generated during the operation of various machines and mechanisms is an urgent task with regard to the power plants and, in particular, to internal combustion engines. Sound emission from the surfaces vibration of body parts is one of the main noise manifestations of the running engine and it is called a structural noise. The vibration defining of the outer surfaces of complex body parts and the calculation of their acoustic characteristics are determined with numerical methods. At the same time, realization of finite and boundary elements methods combination turned out to be very effective. The finite element method is used in calculating the structural elements vibrations, and the boundary elements method is used in the structural noise calculation. The main conditions of the methodology and the results of the structural noise analysis applied to a number of automobile engines are shown.