Truck Front Cabin Mount Tuning for Cabin Noise Boom, Overall Interior Noise and Vibration Reduction

2021 ◽  
Author(s):  
Saahil Saxena ◽  
Sourabh Jadhav
Keyword(s):  
Vibration Reduction ◽  
Interior Noise ◽  
Noise And Vibration ◽  
Cabin Noise ◽  
Noise And Vibration Reduction

Single Pumper Semi-Active Fluid Mount

2003 ◽  
Author(s):  
Nader Vahdati ◽  
Mehdi Ahmadian
Keyword(s):  
Vibration Isolation ◽  
Frequency Tuning ◽  
Vibration Reduction ◽  
Track Length ◽  
Noise And Vibration ◽  
Aerospace Applications ◽  
Cabin Noise ◽  
Model And Simulation ◽  
The Right ◽  
Noise And Vibration Reduction

Passive fluid mounts have been in use in the automotive and aerospace applications for the purpose of cabin noise and vibration reduction since 1940s. Cabin noise and vibration isolation is provided at a frequency coined “notch frequency”. The design location of the notch frequency depends on the application, but with most applications, it is designed to coincide with the longest period of constant speed. To obtain greater cabin noise and vibration reduction at any desired frequency, the notch frequency needs to be as close to that desired frequency as possible. Unfortunately, due to tolerances on all the fluid mount dimensions, material property variations, and variation in elastomer molding processes, the notch frequency never ends up at the right location on the first manufacturing pass. Since none of the passive fluid mount parameters are controllable, the only way to tune the mount is to redesign the mount by changing fluid, changing inertia track length or diameter, or changing rubber stiffness. This trial and error manufacturing process is very costly. To reduce the fluid mount notch frequency tuning cycle time, a new fluid mount design is proposed. In this paper, the new design concept, and its mathematical model and simulation results will be presented.

scholarly journals Application of Tuned Vibration Absorbers in Fluid Mounts

2009 ◽  
Vol 16 (6) ◽  
pp. 565-580 ◽  
Author(s):  
Mohammad Jalali Mashayekhi ◽  
Nader Vahdati
Keyword(s):  
Vibration Isolation ◽  
Dynamic Stiffness ◽  
Vibration Reduction ◽  
Vibration Absorbers ◽  
Noise And Vibration ◽  
Tuned Vibration Absorbers ◽  
Cabin Noise ◽  
Model And Simulation ◽  
Isolation Requirements ◽  
Noise And Vibration Reduction

The need to reduce the fuel consumption of vehicles leads to having lighter chassis’ with lighter engines yet maintaining engine power. These new design requirements are in contrast with the vibration isolation requirements. To keep the vehicles light yet provide good cabin noise and vibration isolation, requires a new vibration isolation technology. Fluid mounts have been used in the aerospace and the automotive industry to provide cabin noise and vibration reduction for years. With the use of passive fluid mounts, the highest cabin noise and vibration reduction is achieved at a frequency called “Notch Frequency”. But typical passive fluid mounts have only one notch frequency. So the best cabin noise and vibration reduction is only achievable at one frequency. In this paper, a new fluid mount design in combination with a tuned vibration absorber is proposed. Bond graph modelling technique is used to model the new fluid mount design. The physical model and simulation results are presented. The effect of the natural frequency of the TVA on the dynamic stiffness of the fluid mount is studied.

Bond Graph Model of a Multi-Layer Piezoelectric (PZT) Beam and Its Application in Semi-Active Hydraulic Mounts

2009 ◽  
Author(s):  
Nader Vahdati ◽  
Somayeh Heidari
Keyword(s):  
Vibration Isolation ◽  
Frequency Tuning ◽  
Vibration Reduction ◽  
Graph Model ◽  
Bond Graph ◽  
Noise And Vibration ◽  
Cabin Noise ◽  
Bond Graph Modeling ◽  
The Right ◽  
Noise And Vibration Reduction

Passive fluid mounts have been in use for the purpose of cabin noise and vibration reduction in the automotive and the aerospace industry. Cabin noise and vibration isolation is provided at a frequency coined “notch frequency”. To obtain the greatest cabin noise and vibration reduction at any desired frequency, the notch frequency needs to be close to that desired frequency. But, due to tolerances on all the fluid mount dimensions, and elastomer material properties, the notch frequency never ends up at the right location on the first manufacturing pass. To resolve notch frequency tuning cycle time, a new fluid mount design is proposed which consists of a conventional single-pumper fluid mount and a 3-layer piezoelectric cantilever beam resulting in a tunable notch frequency mount. Since this new design involves multi energy domains, bond graph modeling technique is used. This new design concept, its mathematical model and simulation results are presented.

scholarly journals EXPERIENCE OF ESTIMATION AND REDUCTION OF NOISE AND VIBRATION OF INDUSTRIAL ENTERPRISES OF RUSSIA

Akustika ◽  
2019 ◽  
Vol 32 ◽  
pp. 247-250 ◽  
Author(s):  
Andrey Vasilyev ◽  
Vladimir Sannikov ◽  
Natalia Tyurina
Keyword(s):  
Vibration Reduction ◽  
The Other ◽  
Joint Stock Company ◽  
Operating Characteristics ◽  
Noise Levels ◽  
Stock Company ◽  
Good Efficiency ◽  
Noise And Vibration ◽  
Industrial Enterprises ◽  
Noise And Vibration Reduction

Industrial noise and vibration leads to the workers disease, fatigue breakdown of pipeline and apparatus junction, decreasing of machine operating characteristics etc. According to statistics, amblyacousia and vibration illness takes the first places among all the other professional diseases. Investigations of noise and vibration levels at the operator's positions of "Volgoelectromontazh-1" Joint Stock Company of Russian Federation were done. Measurements were carried out according to existing methods and standards. In total 27 operator's positions were investigated in the main building and in the shop of consumer goods. The results of measurements showed, that for some positions (pendulum saw, cutting-off lathe, presses etc.) there were significant excesses of the sanitary standards of noise levels. Complex of measures of noise reduction was developed, including technical decisions and organizing measures. Results of measures implementation shows good efficiency of noise and vibration reduction.

Sign in / Sign up

Export Citation Format

Share Document