Author(s)

E.S. Ayllon

Abstract

The purpose of this paper was to determine the stress conditions within a mechanical part that failed catastrophically while being tested. The method used for the determination of the stresses was the LUSAS 12.1 finite element calculation approach (FEA). The part in question was a hydraulic brake cylinder, which, due to a failure in the test regulating valves, was subjected to an internal pressure at least three times its normal operating stress, with consequent rupture of the cylinder wall. The explosion produced a crack which originated at the pressure inlet orifice in the cylinder wall. A design was proposed based on LUSAS analysis. Introduction The crack begins at the hole made for the pressure inlet running, in both directions, practically ta

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