Archive > 2014 > December 2014 > Finite Element Evaluation of Bearing Instrumentation Method

Finite Element Evaluation of Bearing Instrumentation Method - December 2014

J. Austin, Dr. David Talbot, Dr. Donald Houser and Dr. Sandeep M. Vijayakar

The article "Finite Element Evaluation of Bearing Instrumentation Method" appeared in the December 2014 issue of Power Transmission Engineering.

Summary
This paper presents an evaluation of measurements being taken on a 750 kW wind turbine gearbox being tested by the National Renewable Energy Laboratory (NREL). High-speed stage gears and bearings have been identified as critical components of the gearbox; during gearbox testing, these components were instrumented and tests were developed to evaluate loads on high-speed tapered roller bearings (TRBs). In this paper an advanced finite element-based contact modeling procedure has been applied to model the high-speed stage with the bearings fully modeled in order to evaluate strain levels. A major conclusion is that the strains of the slotted grooves are at such a level that they have acceptable signal-to-noise levels. This was verified by the results of the initial experiments presented here.

Keywords
Bearing, GRC, NREL, Gearbox,

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