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Integrated Computational Materials Engineering (ICME) for Metals: Using Multiscale Modeling to Invigorate Engineering Design with Science by Mark F. Horstemeyer

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8.2 MACROSCALE MSF MODEL

In order to perform physically motivated and microstructure-sensitive fatigue estimations of the cast alloys, the MSF model was first proposed by McDowell et al. [15] and modified subsequently in Reference [16–20]. The following equations summarize the MSF model.

8.2.1 Incubation

c08e002 (8.2)

c08e003 (8.3)

c08e004 (8.4)

c08e005 (8.5)

c08e006 (8.6)

c08e007 (8.7)

c08e008 (8.8)

8.2.2 MSC Regime

c08e009 (8.9)

c08e010 (8.10)

For the incubation life, Ninc for a given material, a damage parameter, β, is equated to a modified Coffin–Manson law at the microstructural scale where β is the nonlocal damage parameter around an inclusion determined ...

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