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@ -123,7 +123,7 @@ constant with units of force/distance. In the Hertzian case, Kn is
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like a non-linear spring constant with units of force/area or
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pressure, and as shown in the <A HREF = "#Zhang">(Zhang)</A> paper, Kn = 4G /
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(3(1-nu)) where nu = the Poisson ratio, G = shear modulus = E /
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(1(1+nu)), and E = Young's modulus. Similarly, Kt = 8G / (2-nu).
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(2(1+nu)), and E = Young's modulus. Similarly, Kt = 8G / (2-nu).
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Thus in the Hertzian case Kn and Kt can be set to values that
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corresponds to properties of the material being modeled. This is also
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true in the Hookean case, except that a spring constant must be chosen
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@ -113,7 +113,7 @@ constant with units of force/distance. In the Hertzian case, Kn is
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like a non-linear spring constant with units of force/area or
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pressure, and as shown in the "(Zhang)"_#Zhang paper, Kn = 4G /
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(3(1-nu)) where nu = the Poisson ratio, G = shear modulus = E /
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(1(1+nu)), and E = Young's modulus. Similarly, Kt = 8G / (2-nu).
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(2(1+nu)), and E = Young's modulus. Similarly, Kt = 8G / (2-nu).
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Thus in the Hertzian case Kn and Kt can be set to values that
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corresponds to properties of the material being modeled. This is also
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true in the Hookean case, except that a spring constant must be chosen
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