Abstract
Separation of an interleaved system via pulling is a simple demonstration of friction strength. By pulling the system apart, the operator significantly enhanced the friction through the conversion of traction forces into orthogonal reaction forces on the interleaved region. Present model has limitations owing to approximation errors and divergence at small or large loads. In this theoretical work, a refined geometrical friction amplification model was shown to address these issues. By considering the rotational equilibrium of system and the discrete nature of sheet number, friction amplification factor was noted to be linear at low sheet number and hyperbolic-inverse hyperbolic composite at high sheet number instead of exponential nature as postulated in the former model.
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