Investigation of Nanoscale Scratching on Copper with Conical Tools Using Particle-Based Simulation

Abstract In this study, a modeling approach based on smooth particle hydrodynamics (SPH) was implemented to simulate the nanoscale scratching process using conical tools with different negative rake angles. The model enables study of topography groove profiles, forces, and residual plastic strain beneath groove. An elastoplastic material employed for workpiece, tool–workpiece interaction defined by contact adopted from Hertz theory. in-house Lagrangian SPH code perform nano-scratching simulations. simulation results were compared experimental data available in literature. revealed that normal force more dominant cutting force, agreement reported tip tool 60° angle. addition, simulated profile good produced aforementioned experiment. numerical simulations also showed forces increased increase depth Although ploughing mechanisms noticed nano-scratching, mechanism It observed exists below surface, plastically deformed layer thickness scratched is larger values angle higher depths.