Mechano-chemical coupling in the adhesion of thin-shell structures

作者: Richard M. Springman , John L. Bassani

DOI: 10.1016/J.JMPS.2009.02.002

关键词:

摘要: Abstract Nonlinear coupling between mechanical and chemical fields at material interfaces can result in complex phenomena that include segregation-driven interface strengthening or weakening bistability. Spatial nonuniformity of those is driven by elastic stresses develop the conforming bodies from surface topography patterning inherent roughness. In this paper, equilibrium states are analyzed as a function geometrical, material, properties to understand mechanisms impact strength. particular, theoretical model presented for finite deformations shallow spherical cap adhering rigid substrate either flat has topography. The adhesive interactions taken be continuous local shell–substrate separation concentrations species. Equilibrium characterized contact radii energies average concentration species (closed system) ambient potential (open system). Bistable equilibria, snap transitions, nonuniform energy, traction, salient features numerical solutions. Interface under edge loading conditions also investigated determine chemical, rate pull-off load work separation. Additionally, adhesion substrates with sinusoidal investigate Important predictions later analysis topography-induced segregation patterns

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