Atomistic and Finite Element Contact Analysis of an Asperity and a Rigid Flat

Abstract:

The elastic-plastic finite element and atomistic models for the frictionless contact of a deformable sphere pressed by a rigid flat is presented. The evolution of the elastic-plastic contact with increasing interference is analyzed using two different analysis tools. The simulation results show that deformation mechanisms revealed in the two different analysis tools are quite different from each other. The physical phenomena “jump-to-contact” and “force drops during dislocation emission” are observed in our atomistic simulations which can not be seen in the continuum analysis.

• Periodical: Key Engineering Materials (Volume 642)
• Pages: 60-65
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.642.60
• Online since: April 2015
• Authors: Chung Ming Tan, Chao Ming Lin, Hung Jung Tsai
• Keywords: Asperity, Atomistic Simulation, Contact, Finite Element Analysis (FEA)

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