Overview
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Bernard GARNIER: Head of Projects at MÉTRAVIB RDS
INTRODUCTION
Let's recall the various functions required in conjunction with a machine suspension:
support the weight of the suspended assembly, with a permanent static deflection;
connect components such as drive shafts (flexible couplings), fluid lines (flexible sleeves, exhaust hoses...), etc. ;
compensate for the effects of vibrations, correct misalignments, take up play ;
absorb transient forces, jolts and shocks, by spreading out energy restitution;
dampen vibratory energy by degrading it into heat due to the molecular structure of the chosen elastomer;
decouple the machine from its environment to minimize vibration propagation and noise generation by surrounding structures, unless it is the opposite case, where protection is required from a neighboring machine generating strong vibrations, or from an environment likely to generate shocks (earthquakes), etc. 3 .
To ensure that all these functions are carried out reliably and over the long term, it's best to use suspension components that have already been industrialized.
The first impression that can be gained from consulting the catalogs of the main manufacturers of decoupling elements
Without claiming to be exhaustive, the 1
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Vibration and shock insulation
Bibliography
Standardization
French Standards Association (Afnor)
General measurement techniques
- Vibrations et chocs. Vocabulaire. - NF ISO 2041 - 6-93
- Vibrations et chocs. Détermination expérimentale de la mobilité mécanique. Partie 1 : Définitions fondamentales et transducteurs. - ISO 7626-1 - 1-86
- Partie 2 : mesurages avec...
Builders, manufacturers
(non-exhaustive list)
Anti-vibration and anti-shock systems and pads
Freudenberg http://www.freudenberg.com
GERB http://www.gerb.com
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