title: Buckling of sheared and compressed microfibrils.
abstract: In this paper, we study the stability of an initially straight elastic fibril clamped at one end, while the other end is subjected to a constant normal compressive force and a prescribed shear displacement. We found the buckling load of a sheared fibril to be always less than the Euler buckling load. Furthermore, if the end of the fibril loses adhesion, then the buckling load can be considerably less. Our result suggests that the static friction of microfibre arrays can decrease with increasing normal compressive load and, in some cases, friction force can actually become negative.
authors.affiliation: Department of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY 14853, USA.
authors.forename: Nichole
authors.initials: N
authors.lastname: Nadermann
authors.forename: Ajeet
authors.initials: A
authors.lastname: Kumar
authors.forename: Sachin
authors.initials: S
authors.lastname: Goyal
authors.forename: Chung-Yuen
authors.initials: CY
authors.lastname: Hui
mesh_terms: D000268:Adhesiveness; D019245:Compressive Strength; D017276:Friction; D055616:Microtechnology; D008962:Models, Theoretical; D033081:Shear Strength
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