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Analogy of Mechano-Tribological Behavior of Different Locomotor Surfaces
Abstract
In this chapter, we compare two locomotor surfaces: snake and human within the context of mechano-tribological behaviour. We show that the friction response of both skins is similar despite difference in composition and apparent surface structure. Both skin types display sensitivity to hysteresis and adhesive dissipation. Human skin, however, being more sensitive to hysteresis than snakeskin. The ratio of friction coefficients, when sliding on the same interface, is a function of the reciprocal of the moduli of elasticity. This points at the effect of the layering sequence of skin compositional layers which results in functional grading of properties to facilitate efficient performance under species specific constraints.
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