ISO 10846-2:1997 Acoustics and vibration - Laboratory measurement of vibro-acoustic transfer properties of resilient elements - Part 2: Dynamic stiffness of elastic supports for translatory motion - Direct method
This part of ISO 10846 specifies a method for determining the dynamic transfer stiffness for translations of elastic 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 elastic supports with parallel flanges (see figure 1).
NOTE 1 Vibration isolators which are the subject of this part of ISO 10846 are those which are used to reduce:
a) the transmission of audiofrequency vibrations (structure-borne sound, 20 Hz to 20 kHz) to a structure which may, for example, radiate unwanted fluidborne sound (airborne, waterbome or other);
b) the 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.
NOTE 2 In practice the size of the available test rig(s) may restrict the use of very small or very large elastic supports.
NOTE 3 When an elastic support has no parallel flanges, an auxiliary fixture should be included as part of the test element to arrange for parallel flanges.
NOTE 4 Portions of continuous supports of strips and mats are used as test samples in this method. Whether or not the portion describes the behaviour of the complex system sufficiently is the responsibility of the user of this part of ISO 10846.
Measurements for translations normal and transverse to the flanges are covered in this part of ISO 10846.
The method covers the frequency range from 1 Hz up to a frequency f1, which is usually determined by the test rig.
The data obtained according to the method specified in this part of ISO 10846 can be used for:
— product information provided by manufacturers and to suppliers;
— information during product development;
— quality control;
— calculation of the transfer of vibrational energy through isolators.
ISO 10846-2:1997 history
2008ISO 10846-2:2008 Acoustics and vibration - Laboratory measurement of vibro-acoustic transfer properties of resilient elements - Part 2: Direct method for determination of the dynamic stiffness of resilient supports for translatory motion
1997ISO 10846-2:1997 Acoustics and vibration - Laboratory measurement of vibro-acoustic transfer properties of resilient elements - Part 2: Dynamic stiffness of elastic supports for translatory motion - Direct method