Detailed finite element simulations of probe insertion into solid elastic material using a cohesive zone approach

In this paper a method is presented for detailed finite element modelling of probe insertion into an elastic material. This is part of an ongoing investigation into the mechanics of a novel, biomimetic, soft-tissue probe currently under development at Imperial College, London. Analysis is performed using a `cohesive zone´ approach by integrating multiple cohesive elements into a finite element mesh using Abaqus software. Cohesive zones with variable crack paths, generated by both remote tensile and contact loading, and substantial probe penetration along an arbitrarily curved crack path are demonstrated. These advances are critical to understanding probe interactions for the development of an existing prototype and control strategy.