A modified dynamic stiffness calculation method of rubber isolator considering frequency, amplitude and preload dependency and its application in transfer path analysis of vehicle bodies

Xia, Erli; Cao, Zhenglin; Zhu, Xiaohua; Qiu, Sawei; Xue, Zhigang; He, Hong; Li, Luoxing

doi:10.1016/j.apacoust.2020.107780

Cited by 15 publications

(7 citation statements)

References 34 publications

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“…During the process of vehicle operation, aerodynamic noise generated by the interaction between the body and airflow has become one of the main factors affecting the internal and external environment of the vehicle and the comfort of drivers. The aerodynamic noise in the front cover area of a car has also become one of the main noise sources due to its direct exposure to the wind field [5] . Among them, the edge area of the front cover of the car is heavily affected by aerodynamic forces, which can easily generate edge noise.…”

Section: Introductionmentioning

confidence: 99%

“…The interference of car wind noise can affect drivers' auditory recognition of traffic signals and reduce driving safety. Due to car wind noise, drivers may experience fatigue and lack of concentration, which may lead to traffic accidents [6][7][8][9] . Car wind noise may also interfere with speech recognition and communication in the car, affecting the interaction and communication functions between users and the onboard system [10] .…”

Section: Introductionmentioning

confidence: 99%

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Research on aerodynamic noise reduction of automobile front cover based on a simplified fluid model simulation method

Changyuan,

Jianfu,

Gang

et al. 2024

Fourth International Conference on Mechanical Engineering, Intelligent Manufacturing, and Automation Technology (MEMAT 2023)

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This study focuses on a certain vehicle model and analyzes the noise problem in the edge area of the front cover of the car through wind tunnel tests and Fluent numerical simulation software. Firstly, numerical calculations and analysis were conducted using fluid dynamics theory, acoustic theory, and other methods. Secondly, wind tunnel validation was conducted to analyze the impact mechanism of aerodynamic flow field on the noise of the front cover of automobiles. By comparing the simulation results of different design schemes, a simplified model was used to solve a type of method and solution for eliminating the edge noise of the front cover. Explored the mechanism of reducing noise at the front edge of the front cover of vehicles with through grille lights, studied the structure and position of the front grille light area, and applied it to eliminate wind noise in vehicle models. The simulation and experimental results show that the protruding diversion structure passing through the tail lights can effectively avoid the generation of wind noise at the front of the front cover, reduce the sound pressure value at the front cover, and reduce the noise to a maximum of 19 dB.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on aerodynamic noise reduction of automobile front cover based on a simplified fluid model simulation method

Changyuan,

Jianfu,

Gang

et al. 2024

Fourth International Conference on Mechanical Engineering, Intelligent Manufacturing, and Automation Technology (MEMAT 2023)

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show abstract

“…The development of the automobile industry is now relatively mature, and technical advancements in the field of noise and vibration have significantly reduced interior noise in the cabin of a vehicle, which has, in turn, placed an emphasis on exterior noise. Rubber bushing is extensively used in automobile chassis for vibration attenuation and noise reduction owing to its merits, such as low cost and damping properties to dissipate energy [ 1 ]. As a connection between components, rubber bushing transfers movement from one part to another.…”

Section: Introductionmentioning

confidence: 99%

Friction Characteristics Analysis of Rubber Bushing with a Bionic Flexible Contact Surface Based on the Convex Hull Structure

Liang

et al. 2023

Polymers

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Inspired by the convex hull structure of the dung beetle head’s surface, we extracted the non-smooth surface morphology of its head and designed a rubber bushing with a representative structure according to the bionics principle. According to the fitting results of the test data, Ogden N3-Prony N3 was selected as the hyper-viscoelastic constitutive model of the rubber material. Then, the two-direction (radial, axial) motion characteristics of the flexible friction pair in the rubber bushing were systematically analyzed from the aspects of stress, strain and thermal effect through the combination of numerical simulation and experimental research. Finally, the bionic design with the best drag reduction and wear resistance was determined.

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“…Haeussler et al 13 introduced an overview of the dynamic properties of the rubber and obtained a prediction of the coupled frequency response functions in the substructuring assemblies. Xia et al 14 conducted a series of dynamic stiffness tests for the rubber bushings. The influences of the frequency, the amplitude, and the preloads condition were discussed.…”

Section: Introductionmentioning

confidence: 99%

A vibration analysis and control method of a heavy buoyancy regulator in an underwater vehicle

Liu

Yang

Liu

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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Vibration analysis and control are the main issues of heavy buoyancy regulators, which can improve the runtime performance and reduce the power loss. It is an effective approach to add rubber-based isolators to control the vibrations of the heavy buoyancy regulator. However, the vibration reduction effect of the rubber-based isolators is closely related to their structures and material performance. In this study, according to the geometrics of the connecting components, the structures of the rubber-based isolators are designed by using the vibration theory. The rubber-based isolators with different structures and hardness are considered in the finite element models, whose results are used to achieve the optimal design cases. The vibration isolation transmissibility and static deformation ratio of the rubber-based isolator are discussed. The frequency–displacement characteristics of the heavy buoyancy regulator are also analyzed. The results show that the two presented rubber-based isolators can be used to control the vibrations of the heavy buoyancy regulator. It seems that the presented method can be used for the vibration analysis and control of the heavy buoyancy regulators in underwater vehicles.

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A modified dynamic stiffness calculation method of rubber isolator considering frequency, amplitude and preload dependency and its application in transfer path analysis of vehicle bodies

Cited by 15 publications

References 34 publications

Research on aerodynamic noise reduction of automobile front cover based on a simplified fluid model simulation method

Research on aerodynamic noise reduction of automobile front cover based on a simplified fluid model simulation method

Friction Characteristics Analysis of Rubber Bushing with a Bionic Flexible Contact Surface Based on the Convex Hull Structure

A vibration analysis and control method of a heavy buoyancy regulator in an underwater vehicle

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