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  • Engineering Data (material properties)

    I can't seem to find values for a few of the material properties when using transient analysis like the "ductility coefficient". It's supposed to be 6061-T651 Aluminium. Any thoughts? cheers

  • #2
    Do you have access to ASM book, Volume 19?
    Have you seen this equation before:

    Δ (epsilon)/2 = Δ(epsilon)_E/2 + Δ(epsilon)_P/2
    = σ'_F/E × (2N_F)^B + (epsilon)'F (2N_F)^C

    where σ'_f is the fatigue strength coefficient, b is the fatigue strength exponent, (epsilon)'_f is the fatigue ductility coefficient, c is
    the fatigue ductility exponent, E is Young's modulus, and 2N_f is the number of reversals to failure.

    You can calculate fatigue ductility coefficient from the Strain Amplitude-Number of reversals curve or the materials.

    I hope this helps.

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