Effect of Simulated Material Properties and Residual Stresses on High Cycle Fatigue Prediction in a Compacted Graphite Iron Engine Block

Paper #:
  • 2010-01-0016

Published:
  • 2010-04-12
Citation:
McClory, B., Nguyen, W., and Heisser, C., "Effect of Simulated Material Properties and Residual Stresses on High Cycle Fatigue Prediction in a Compacted Graphite Iron Engine Block," SAE Technical Paper 2010-01-0016, 2010, https://doi.org/10.4271/2010-01-0016.
Pages:
10
Abstract:
Casting, machining and structural simulations were completed on a V8 engine block made in Compacted Graphite Iron (CGI) for use in a racing application. The casting and machining simulations generated maps of predicted tensile strength and residual stress in the block. These strength and stress maps were exported to a finite element structural model of the machined part. Assembly and operating loads were applied, and stresses due to these loads were determined. High cycle fatigue analysis was completed, and three sets of safety factors were calculated using the following conditions: uniform properties and no residual stress, predicted properties and no residual stress, and predicted properties plus residual stress.
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