Nonlinear computational analysis of materials showing inelastic behaviour relies on knowledge of their yield behaviour and strength under complex stress states. One obstacle when dealing with elasto-plasticity is the choice of the correct yield surface for the given material. Therefore, it is desirable to use a formulation that is able to describe a wide range of materials while retaining a simple and explicit form. A possible class of surfaces is the set of convex quadrics. Bone tissue changes the shape of its yield envelope depending on the length scale considered. The aim of this study was to find a general formulation able to describe bone on several length scales.
|Title of host publication||19th Congress of the European Society of Biomechanics (ESB2013)|
|Number of pages||1|
|Publication status||Published - 2013|