Overview
EN ISO 10846-1:2008 - "Acoustics and vibration - Laboratory measurement of vibro-acoustic transfer properties of resilient elements - Part 1: Principles and guidelines" - provides the theoretical background, measurement principles and selection guidance for the ISO 10846 series. It explains how to determine frequency-dependent dynamic transfer stiffness and related vibro‑acoustic transfer properties of resilient elements used to reduce structure-borne and low‑frequency vibration (audio‑frequency 20 Hz–20 kHz and low‑frequency typically 1 Hz–80 Hz).
This part does not prescribe a single measurement procedure but describes the principles underlying the laboratory methods in Parts 2–5 and gives the limitations and validity conditions of those methods.
Key topics and requirements
- Dynamic transfer stiffness and dynamic driving point stiffness: definitions and their frequency dependence; transfer stiffness is the ratio of the blocking force on the output side to the displacement on the input side.
- Dynamic stiffness matrix: formulation and relevance for multi‑degree‑of‑freedom resilient elements.
- Measurement principles: overview of the Direct, Indirect and Driving‑Point methods; discussion of blocked transfer stiffness measurement.
- Linearity and validity conditions: methods assume linear vibrational behavior under a given static preload and point‑contact interfaces between isolator and adjacent structures.
- Loss factor and flanking transmission: considerations for damping and secondary transmission paths that affect vibro‑acoustic performance.
- Uncertainty and practical limitations: guidance on when each method is appropriate and the conditions required for reliable laboratory results.
Applications
EN ISO 10846-1:2008 supports practical use cases such as:
- Product information and specification of resilient mounts, engine mounts, building supports, and machine isolators.
- Design and development of vibration‑isolation systems (automotive, shipboard, building services, appliances).
- Laboratory testing and quality control of resilient elements and isolators.
- Calculation and prediction of vibration and structure‑borne sound transmission using measured transfer properties.
Who uses this standard
- Acoustic and vibration engineers
- Test laboratories and QA teams
- Manufacturers and suppliers of resilient elements and isolation systems
- Consultants for building acoustics, machinery installation and product development
Related standards
Part 1 guides selection and interpretation of the series:
- ISO 10846-2: Direct method for translatory motion
- ISO 10846-3: Indirect method for translatory motion
- ISO 10846-4: Dynamic stiffness of elements other than translatory supports
- ISO 10846-5: Driving‑point method for low‑frequency transfer stiffness
Keywords: EN ISO 10846-1:2008, ISO 10846-1, vibro-acoustic, dynamic stiffness, resilient elements, laboratory measurement, structure-borne sound, low-frequency vibration.
