标准编号：ISO 10846-5:2008
中文名称：声学和振动 弹性元件的振动-声传输特性的实验室测量 第5部分：平移运动弹性支撑的低频传输硬度测定用驱动点法
英文名称：Acoustics and vibration — Laboratory measurement of vibro-acoustic transfer properties of resilient elements — Part 5: Driving point method for determination of the low-frequency transfer stiffness of
发布日期：2008-08
标准范围
This part of ISO 10846 specifies a driving point method for determining the Iow-frequency transfer stiffness fortranslations of resilient supports, under a specified preload. The method concerns the laboratorymeasurement of vibrations and forces on the input side with the output side blocked, and is called the "drivingpoint method".The stiffness resulting from measuring the input displacement (velocity, acceleration) and input force is thedynamic driving point stiffness. Only at Iow frequencies, where the driving point stiffness and the transferstiffness are equal, can this method be used for determination of the dynamic transfer stiffness.NOTE 1 In ISO 10846-2, the direct method for measuring the dynamic transfer stiffness is covered. The direct methodcovers the determination of the Iow-frequency dynamic transfer stiffness and it covers, in principle, a wider frequencyrange than the driving point method. Nevertheless, the driving point method is covered in the ISO 10846 series ofinternational standards as well. It is considered as a valuable option for owners of (often expensive) test rigs for drivingpoint stiffness measurements, to extend the use of these rigs with the determination of Iow-frequency dynamic transferstiffness.The method is applicable to test elements with parallel flanges (see Figure 1).Resilient elements, which are the subject of this part of ISO 10846, are those which are used to reducea) the transmission of vibration in the lower part of the audible frequency range (typically 20 Hz to 200 Hz) to a structure which may, for example, radiate unwanted fluid-borne sound (airborne, waterborne or others), andb) the transmission of Iow-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 available test rig(s) determines restrictions for very small and for very large resilientsupports.NOTE 3 Samples of continuous supports of strips and mats are included in the method. Whether or not the sampledescribes 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 f=1 Hz to the upper limiting frequency fUL. Typically50 Hz ≤ fUL ≤ 200 Hz.The data obtained according to the method specified in this part of ISO 10846 can be used for the following:-- product information provided by manufacturers and suppliers;-- information during product development;-- quality control, and-- calculation of the transfer of vibration through isolators.
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