Mechanical property analysis of a novel peel-speed sensitive flexible fastener

A design of peel-speed sensitive flexible fastener was proposed based on a novel modified polyurethane. Taking the microtrichia head-arrester system lestes barbarous as bionic prototype, structure micro protuberance designed self-mating type with hemispherical caps. Considering nonlinearities contact behavior and material property, micromechanical model typical interlocking element is established. Adopting explicit dynamics finite method, mechanical responses in peeling are analyzed. The detachment predicated by taking total strain energy an indicator. influences peel speed friction coefficient performances parametrically studied. results show that maximum force strength increased respect to enhancing because intrinsic nonlinearity constitutive relation polyurethane investigation adopted. With larger coefficient, force, corresponding de-adhesion displacements respectively enhanced.