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What is the indentation effect of the Contact force?
fbadmin(admin) Date: | Read : 5781

What is the indentation effect of the Contact force?

A) The contact normal force is calculated by  where, k and c are the spring and damping coefficients which are determined by an experimental method, respectively. The m1, m2 and m3 are the stiffness, damping and indentation exponents. and are a penetration and time differentiation of the penetration, respectively. Especially, Indentation Exponent(m3) yields an indentation damping effect. When the penetration is very small, the contact force may be negative due to a negative damping force, which is not realistic. This situation can be overcome by using the indentation exponent greater than one. "


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