Forces in the Falex Configuration

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Abstract
Two sets of Falex test specimens were examined to determine the compressive stresses in the contact zones at the time of lubricant failure. Two wear scar variations were found: (1) between sides of the same vee block, and (2) between vee blocks from the same test. To explain these anomalies, a force analysis of the Falex configuration was made. The force analysis of a vee block revealed that the two faces have the same normal loads only when there is no motion. Details and force curves are presented. The force analysis of the lever system revealed that only if the two halves of the lever system were identical (with manufacturing tolerances identical) would the loading on the two vee blocks in a single test be the same. Conclusions relative to the analysis and final compressive stress results are made.