Simulation of thermomechanical fatigue of ductile cast iron and lifetime calculation

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Proceedings titleSAE technical papers
ConferenceSAE 2015 World Congress and Exhibition, September 22-24, 2015, Seattle, Washington, USA
Article number2015-01-0552
Subjectthermomechanical fatigue; ductile cast iron; simulation and modeling
AbstractIn this paper, both standard and constrained thermomechanical fatigue (TMF) tests were conducted on a high silicon ductile cast iron (DCI). The standard TMF tests were conducted with independent control of mechanical strain, out-of-phase (OP) and in-phase (IP) strain, and temperature in the range from 300 to 800°C. The constrained TMF tests were conducted with various constraint ratios of 100%, 70%, 60% and 50% at the temperature ranges of 160 to 600°C and 160 to 700°C. Based on a material model as calibrated with low-cycle fatigue (LCF) data of DCI, finite element analyses (FEA) of the above TMF tests were carried out with Abaqus. A damage mechanism-based lifetime model was integrated into a C++ API code to post-process the Abaqus output results. Simulation predictions show good agreement with experiments for stress-strain responses and lifetime under different TMF conditions.
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AffiliationAerospace; National Research Council Canada
Peer reviewedYes
NPARC number21277292
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Record identifierb25ceb05-52e9-4eba-868d-ffafed02b38f
Record created2016-02-09
Record modified2016-05-09
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