scholarly journals Applications of the Noise and Vibration Simulation and Its Constitutive Modeling for the Rubber Material

2016 ◽  
Vol 89 (8) ◽  
pp. 254-258
Author(s):  
Hiroto IDO
Keyword(s):  
Constitutive Modeling ◽  
Rubber Material ◽  
Noise And Vibration ◽  
Vibration Simulation

Powertrain noise and vibration simulation with hybrid models

2002 ◽  
Vol 29 (1/2) ◽  
pp. 149
Author(s):  
Kenji Sumi ◽  
Kenichi Yamamoto ◽  
Ludo Gielen ◽  
Luc Meulewaeter
Keyword(s):  
Hybrid Models ◽  
Noise And Vibration ◽  
Vibration Simulation

An Integrated Numerical Tool for Engine Noise and Vibration Simulation

1997 ◽  
Author(s):  
B. Loibnegger ◽  
G. Ph. Rainer ◽  
L. Bernard ◽  
D. Micelli ◽  
G. Turino
Keyword(s):  
Engine Noise ◽  
Noise And Vibration ◽  
Numerical Tool ◽  
Vibration Simulation

Performance study of RTV-2 Silicone Rubber Material For Soft Actuator by Experimental and Numerical methods: The Effect of Inflation Pressure and Wall Thickness

2020 ◽  
Vol 17 (1) ◽  
pp. 7524-7532 ◽  
Author(s):  
Deepak D. ◽  
Nitesh Kumar ◽  
Shreyas P. Shetty ◽  
Saurabh Jain ◽  
Manoj Bhat
Keyword(s):  
Numerical Methods ◽  
Wall Thickness ◽  
Silicone Rubber ◽  
Inflation Pressure ◽  
Performance Study ◽  
Rubber Material ◽  
Soft Actuator ◽  
Alternative Materials ◽  
Load Carrying ◽  
Influential Parameters

The expensive nature of currently used materials in the soft robotic industry demands the consideration of alternative materials for fabrication. This work investigates the performance of RTV-2 grade silicone rubber for fabrication of a soft actuator. Initially, a cylindrical actuator is fabricated using this material and its performance is experimentally assessed for different pressures. Further, parametric variations of the effect of wall thickness and inflation pressure are studied by numerical methods. Results show that, both wall thickness and inflation pressure are influential parameters which affect the elongation behaviour of the actuator. Thin (1.5 mm) sectioned actuators produced 76.97% more elongation compared to thick sectioned, but the stress induced is 89.61 % higher. Whereas, the thick sectioned actuator (6 mm) showed a higher load transmitting capability. With change in wall thickness from 1.5 mm to 6 mm, the elongation is reduced by 76.97 %, 38.35 %, 21.05 % and 11.43 % at pressure 100 kPa, 75 kPa, 50 kPa and 25 kPa respectively. The induced stress is also found reduced by 89.61 %, 86.66 %, 84.46 % and 68.68 % at these pressures. The average load carrying capacity of the actuator is found to be directly proportional to its wall thickness and inflation pressure.

Characterisation of the Humming-Type Noise and Vibration of the Automotive HVAC System

2019 ◽  
Vol 16 (2) ◽  
pp. 6634-6648
Author(s):  
A. Z. A. Mazlan ◽  
M. H. A. Satar ◽  
M. H. Hamdan ◽  
M. S. Md. Isa ◽  
S. Man ◽  
...  
Keyword(s):  
Vibration Characteristics ◽  
Operating Conditions ◽  
Hvac System ◽  
Frequency Range ◽  
Noise And Vibration ◽  
Power Steering ◽  
Pump Compressor

The automotive heating and ventilating air condition (HVAC) system, when vibrating, can generate various types of noises such as humming, hissing, clicking and air-rushes. These noises can be characterised to determine their root causes. In this study, the humming-type noise is taken into consideration whereby the noise and vibration characteristics are measured from various HVAC components such as power steering pump, compressor and air conditional pipe. Four types of measurement sensors were used in this study - tachometer for rpm tracking; accelerometer for the vibration microphone for the noise; and sound camera for the visualization measurement. Two types of operating conditions were taken into consideration - they were “idle” (850 rpm) and “running” (850-1400 rpm) conditions. A constant blower speed was applied for both conditions. The result shows that the humming noises can be determined at the frequency range of 300-350 Hz and 150-250 Hz for both idle and running conditions, respectively. The vibration of the power steering pump shows the worst acceleration of 1.8 m/s2 at the frequency range of 150-250 Hz, compared to the compressor and air conditional pipe. This result was validated with the 3D colour order and sound camera analyses, in which the humming noise colour mapping shows dominance in this frequency range.  

Noise and vibration: Mine workers’ exposure in Quebec underground mines

CIM Journal ◽  
2015 ◽  
Vol 6 (2) ◽  
pp. 111-117
Author(s):  
Marcel Laflamme ◽  
Pierre Marcotte ◽  
Jérôme Boutin ◽  
Sylvain Ouellette ◽  
Gilles LeBlanc
Keyword(s):  
Underground Mines ◽  
Noise And Vibration ◽  
Mine Workers

Preventing Noise and Vibration During the 60 Years of Activity of the Central Institute for Labour Protection - National Research Institute

2011 ◽  
Vol 36 (1) ◽  
pp. 161-171
Author(s):  
Wiktor Zawieska ◽  
Dariusz Pleban
Keyword(s):  
Working Environment ◽  
60Th Anniversary ◽  
National Research Institute ◽  
Noise And Vibration ◽  
Central Institute ◽  
Research Institute

Abstract In 2010, the Central Institute for Labour Protection - National Research Institute celebrated the 60th anniversary of its activity. Primary objectives of the Institute have been and continue to be the protection of employees against any hazards at work stations. Among the numerous hazards, vibroacoustic ones are becoming prevailing. Therefore, one can now dare to say that the 60 years of activity of the Central Institute for Labour Protection have also meant 60 years of preventing noise and vibration in the working environment. For those 60 years of activity, Central Institute for Labour Protection has been associated with outstanding acousticians and vibration specialists. The first chairperson of the Scientific Council of the Central Institute for Labour Protection was Professor Ignacy Malecki, one of the most outstanding Polish scientists. Chairpersons of the Council have also included Professor Adam Lipowczan and Professor Zbigniew Engel and the members of the Council have included Professor Stefan Ziemba and Professor Jerzy Sadowski.

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