Damage Model for Biological Tissues

Abstract eng:
The mechanical behaviour of soft biological tissues is heavily influenced by the presence of the collagen fibres. In this study, we introduced a constitutive damage model for a single fibre. The model is based on the progressive recruitment and failure of the fibrils of which the fibre is mainly comprised. We employed distribution functions to model the progressive recruitment and failure of the fibrils. The recruitment-damage model has been implemented into Finite Elements (FE) and was able to reproduce several aspects of the experimentally observed behaviour of soft biological tissues.

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