An Approach for Evaluating Structure-Borne Noise Emission of Axial Piston Units Using Blocked Forces
DOI:
https://doi.org/10.13052/ijfp1439-9776.2717Keywords:
Structure-borne noise, axial piston pumps, source characterization, blocked forcesAbstract
In the context of electrification and the development of quieter internal combustion engines, the noise generated by axial piston units is becoming more prominent. While established methods and standards exist for evaluating airborne and fluid-borne noise of hydraulic pumps, the structure-borne noise emitted by the pump and transferred to mobile machinery has rarely been investigated. A method that has gained popularity in recent applications for characterizing structure-borne noise sources is the in situ blocked force method. Blocked forces are receiver-system-independent interface quantities, allowing for a component-specific assessment of structure-borne noise. This publication introduces the fundamental approaches for determining blocked forces and presents the results of a metrological assessment of blocked forces for an axial piston pump. The findings demonstrate promising outcomes according to common validation methods for blocked forces and provide two straightforward single-valued metrics for evaluating the emitted structure-borne noise of an axial piston pump.
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