ELASTICITY OF MASS ARTIFACTS IN SINUSOIDAL FORCE CALIBRATION

John C. Bankert, Ako Chijioke

Abstract

Dynamic calibration of force transducers using sinusoidal acceleration of load mass objects requires the accurate determination of the displacement field in such objects, in order to relate accelerations measured at one or a few locations on the object to its body-averaged acceleration. We present the results of finite element calculations of such displacement fields, and show that there are significant differences from the results of first-order approximations at calibration frequencies above ˜ 1 kHz for typical load mass objects.

Keywords

dynamic force, force calibration, sinusoidal force, harmonic force, elastic waves

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IMEKO-WC-2015-TC3-045.pdf

DOI

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IMEKO TC

TC3 - Measurement of Force, Mass, Torque, and Gravity

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