Management aspects of baggage system noise and vibration problems

1975 ◽  
Vol 58 (S1) ◽  
pp. S60-S60
Author(s):  
David W. Krzak
Keyword(s):  
Noise And Vibration ◽  
System Noise ◽  
Vibration Problems

Using Model Uncertainty to Reduce Verification and Validation in Noise and Vibration Problems

2012 ◽  
Author(s):  
Kevin Otto ◽  
Clas Jacobson
Keyword(s):  
Model Uncertainty ◽  
Verification And Validation ◽  
Noise And Vibration ◽  
Uncertainty Range ◽  
Design Changes ◽  
Vehicle Systems ◽  
Occupant Comfort ◽  
Design Requirements ◽  
Vibration Problems ◽  
Residual Errors

Verifying and validating that a mechanical system meets the design requirements is often a costly iterative activity. This is particularity true, for example, with complex vehicle systems that must meet noise and vibration requirements to ensure vehicle occupant comfort. We show here how analysis of model uncertainty can speed verification testing by bounding and guiding hardware prototype redesign. Vibration and acoustic model uncertainty and residual errors are estimated, and then analysis derived to ensure that this uncertainty range is covered by a planned set of design changes. We further use these results to define a complexity metric based on uncertainty, and an adaptability metric based on the domain of available adjustment. We then propose a capability metric by comparing the range of uncertainty against the range of adaptability provided. We demonstrate the efficacy with an example from the elevator system design, rapidly meeting noise and vibration requirements with only one prototype iteration.

Washers to Reduce Vibration and Noise From the Injection Molding Process

2006 ◽  
Author(s):  
Kuang-Yih Tsuei ◽  
Shu-Fen Kuo
Keyword(s):  
Injection Molding ◽  
Energy Absorption ◽  
Injection Molding Process ◽  
Performance Tests ◽  
Molding Process ◽  
Noise And Vibration ◽  
Vibration Problems ◽  
And Performance

The noise and vibration problems created by injection molding machines can be moderated by the installation of absorbers. The pull rods of the machine, which are guided to the molding movements, might be a better location for mounting a spring, rubber or hybrid elastomer for energy absorption and reduction of noise and vibration. In this paper, some special washers are designed to fit the guide rods and performance tests are carried out. The results show that noise and vibration decreased over 10 dB and 2 times, respectively.

scholarly journals Analysis of Common Problems of Noise and Vibration in Building Heating Ventilation Air Conditioning Design

2021 ◽  
Vol 283 ◽  
pp. 01051
Author(s):  
Xiaolong Ruan ◽  
Yisong Yin
Keyword(s):  
Continuous Improvement ◽  
Air Conditioning ◽  
Preventive Measures ◽  
Hvac System ◽  
Continuous Growth ◽  
Noise And Vibration ◽  
Vibration Problems ◽  
Common Problems ◽  
Air Conditioning Systems ◽  
And Control

With the continuous growth of my country's economy and the continuous improvement of the people's economic level, the demand for the design of heating, ventilation and air conditioning systems has also increased. The HVAC system is very important in the building environment. When optimizing the relevant design, it is necessary to always consider the design details of the HVAC system and adjust the integrity of the design, especially to take preventive measures in areas where noise and vibration may occur to avoid heating serious problems caused by noise and general vibration when the communication system is running. This article outlines how to avoid and control common noise and vibration problems when designing HVAC projects.

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