Assessment of finite element and smoothed particles hydrodynamics methods for modeling serrated chip formation in hardened steel

• Main Authors: Usama Umer, Muneer Khan Mohammed, Jaber Abu Qudeiri, Abdulrahman Al-Ahmari
• Format: Article
• Language: English
• Published: SAGE Publishing 2016-05-01
• Series: Advances in Mechanical Engineering
• Online Access: https://doi.org/10.1177/1687814016652372

This study aims to perform comparative analyses in modeling serrated chip morphologies using traditional finite element and smoothed particles hydrodynamics methods. Although finite element models are being employed in predicting machining performance variables for the last two decades, many drawbacks and limitations exist with the current finite element models. The problems like excessive mesh distortions, high numerical cost of adaptive meshing techniques, and need of geometric chip separation criteria hinder its practical implementation in metal cutting industries. In this study, a mesh free method, namely, smoothed particles hydrodynamics, is implemented for modeling serrated chip morphology while machining AISI H13 hardened tool steel. The smoothed particles hydrodynamics models are compared with the traditional finite element models, and it has been found that the smoothed particles hydrodynamics models have good capabilities in handling large distortions and do not need any geometric or mesh-based chip separation criterion.