EN ISO 10846-2:2008

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Requirements for apparatus
   5.1 Normal translations
   5.2 Transverse translations
   5.3 Suppression of unwanted vibrations
6 Criteria for adequacy of the test arrangement
   6.1 Frequency range
   6.2 Measurement of blocking force
   6.3 Flanking transmissions
   6.4 Unwanted input vibrations
   6.5 Accelerometers
   6.6 Force transducers
   6.7 Summation of signals
   6.8 Analysers
7 Test procedures
   7.1 Installation of the test elements
   7.2 Selection of force measurement system and output-force
       distribution plates
   7.3 Mounting and connection of accelerometers
   7.4 Mounting and connections of the vibration exciter
   7.5 Source signal
   7.6 Measurements
   7.7 Test for linearity
8 Evaluation of test results
   8.1 Calculation of dynamic transfer stiffness
   8.2 One-third-octave-band values of the frequency-averaged
       dynamic transfer stiffness
   8.3 Presentation of one-third-octave-band results
   8.4 Presentation of narrow-band data
9 Information to be recorded
10 Test report
Annex A (informative) - Static load-deflection curve
Annex B (informative) - Measurement uncertainty
Bibliography

ISO 10846-2:2008 specifies a method for determining the dynamic transfer stiffness for translations of resilient supports, under specified preload. The method concerns the laboratory measurement of vibrations on the input side and blocking output forces and is called “the direct method.” The method is applicable to test elements with parallel flanges (see Figure 1).Resilient elements, which are the subject of ISO 10846-2:2008, are those which are used to reducethe transmission of vibration in the lower part of the audible frequency range (typically 20 Hz to 500 Hz) to a structure which may, for example, radiate unwanted fluid-borne sound (airborne, waterborne or others), andthe transmission of low-frequency vibrations (typically 1 Hz to 80 Hz), which may, for example, act upon human subjects or cause damage to structures of any size when vibration is too severe.