Determination of loads transmitted by rolling elements in a roller bearing using capacitive probes: Finite element validation

• The principle of capacitive measurement is explained.
• Our test bench is thoroughly described.
• We model the experimental setup using the finite element method.
• Numerical results in terms of forces and displacements are in good agreement with experimental measurements.
• FE simulation will be used for the design of a forthcoming prototype for dynamic load measurements.

In this paper, we present the numerical model of an experimental device for measuring the deformation of a bearing ring under radial force. Deflection is measured using a capacitive probe, consisting of a transducer yielding electrical signal from ring deformation. Next, contact force is calculated and linearity of the relationship between load and strain is checked. Thus, we measure the load transmitted by the rolling elements of rolling bearings. A numerical finite element model of the experimental setup is implemented to validate the experimental method and confirm the consistency of the measurement principle.