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International Journal of Mechanical and Industrial Engineering

Abstract

The present work deals with understanding the current process of estimating the fatigue safety factors for engine block. To capture the loading in cylinder block, real time rotating and reciprocating loads are applied at the initial firing angle and at every subsequent 5 or 10 degrees of crankshaft rotation. This could results in 144 or 72 analysis load steps to represent the complete cycle. This involves enormous computation time and adversely affects the design cycle time. This work involves the identification of the crank angles which contribute to maximum and minimum stresses that are acting during operation. Thereby reducing the number of analysis steps with a benefit of saving time and high performance computation and quicker design solution. A method is proposed to minimize the number of crank angles using Abaqus for estimating the engine block fatigue. Using the new approach reassessment was made on the fatigue calculation.

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