Alan, John. I think John is useing the term Stiffness in the sense most Americans use for Youngs Modulus. In anycase.. Fandrich gives the following formula for String stiffness.. the reason I bring it in is that it looks like somethings wrong here.... He lists identical values for the K and Y. What am I missing ? Alan, your response to David is in line with what I understand as well. McMorrow makes an indirect point of this as part of his justification for the very thin V profile. Davids ensuing reply was more or less carboned from page 6 of Fandrichs handout and of course is sensable enough. But we were talking about the direct relationship between tension and inharmonicity in the earlier context. J =(Pi^2Yd^2kL^2K) /32 ) Where: K is 1.9 * 10^11 N/m^2 k is a numerical constant Y is Youngs Modulus L i Length d is diameter (in mm) Alan writes: >We've all been led to believe that inharmonicity is caused by the stiffness >of the wire; hence if the tension increases, surely the stiffness increases. John D responds: The stiffness of a wire of a certain material is constant and independent of tension. JD
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