Fig. 11.
Effects of elastic modulus and Poisson's ratio: the stress and strain distribution along vertical axis of symmetry for an indented particle of 0.5 μm in diameter. The indentation force corresponds to Fγ at γcrit. A: effect of Young's elastic modulus, E, for Poisson ratio v = 0.5 on axial stress, σz, a radial/hoop stress, σr, and von Mises stress, σθ (left); and on axial strain, εz, a radial/hoop strain, εr ≈ εθ, and effective strain, εeff (right). B: effect of Poisson ratio, v, for E = 20 kPa on stresses σz, σr, ≈ σθ, and σv (left); and on strains εz, εr ≈ εθ and εeff (right).