Thermal Fatigue Analysis of Cast Aluminum Cylinder Heads

2002-01-0657

03/04/2002

Event
SAE 2002 World Congress & Exhibition
Authors Abstract
Content
Thermal fatigue presents a new challenge in cast aluminum engine design. Accurate thermomechanical stress analysis and reliable failure criterion are the keys to a successful life prediction. It is shown that the material stress and strain behavior of cast aluminum is strongly temperature and strain rate sensitive. A unified viscoplasticity constitutive relation is thus proposed to simultaneously describe the plasticity and creep of cast aluminum components deforming at high temperatures. A fatigue failure criterion based on a damage accumulation model is introduced. Damages due to mechanical fatigue, environmental impact and creep are accounted for. The material stress and strain model and thermal fatigue model are shown to be effective in accurately capturing features of thermal fatigue by simulating a component thermal fatigue test using 3D FEA with ABAQUS and comparing the results with measured data.
Meta TagsDetails
DOI
https://doi.org/10.4271/2002-01-0657
Pages
9
Citation
Su, X., Zubeck, M., Lasecki, J., Engler-Pinto, C. et al., "Thermal Fatigue Analysis of Cast Aluminum Cylinder Heads," SAE Technical Paper 2002-01-0657, 2002, https://doi.org/10.4271/2002-01-0657.
Additional Details
Publisher
Published
Mar 4, 2002
Product Code
2002-01-0657
Content Type
Technical Paper
Language
English