
46 Computational Modelling of Biomechanics and Biotribology
[3.8]
These proposed CS models are purely empirical, and have no physically
based analytical derivation; they are based on limited observations from in
vitro experimentation. In consequence of this paucity of good data, there is
no consensus on a de nitive, correct model for cross-shear, and so alterna-
tive formulations have been suggested. One example is the ‘crossing inten-
sity’ formulation (Hamilton et al ., 2005). Here, cross-shear is estimated as the
spread of different sliding directions, weighted by both the sliding distance
and CP. This effectively ...