Table of Contents
J. Manuf. Mater. Process., Volume 3, Issue 2 (June 2019) – 23 articles
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Cover Story (view full-size image) This paper introduces a fracture-based finite element model, the embedded cohesive zone finite [...] Read more. This paper introduces a fracture-based finite element model, the embedded cohesive zone finite element method (ECZ-FEM), for machining simulation of brittle materials. In ECZ-FEM, a network of cohesive zone (CZ) elements are embedded in the material body of regular elements to capture multiple randomized cracks during a cutting process. The material damage can then be defined by the fracture energy in CZ elements rather than the conventional stress-strain failure. This work presents several simulation results from orthogonally cutting a dense polyurethane foam, which is a brittle bone-mimicking material. Various chip forms, such as dusty debris and irregular fragmented pieces that are observed in the experiment, can be seen in the simulations. View this paper.