Finite element analysis on nanoindentation with friction contact at the film/substrate interface |
| |
| Affiliation: | 1. College of Aerospace Engineering, Chongqing University, Chongqing 400044, China;2. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China;3. Advanced Manufacturing Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;1. ISRO Satellite Centre, Bangalore 560017, India;2. Bundelkhand Institute of Engineering and Technology, Jhansi 284128, India;3. Advanced Mechanical and Materials Characterization Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata 700032, India;4. Nanomaterials Research Laboratory, Surface Engineering Division, CSIR-National Aerospace Laboratories, HAL Airport Road, Kodihalli, Bangalore 560017, India;1. Chair of Applied Mechanics, Saarland University, PO Box 151150, 66041 Saarbrücken, Germany;2. INM – Leibniz Institute for New Materials, Metallic Microstructures Group, Campus D2 2, 66123 Saarbrücken, Germany;1. School of Civil Engineering, The University of Sydney, NSW 2006, Australia;2. Department of Civil and Construction Engineering, Curtin University, Sarawak, Malaysia |
| |
| Abstract: | Finite elements (FE) provide a numerical method to calculate complex nanoindentation problems. Correlation of FE analysis with experimental data on nanoindentation may lead to improved characterization of the mechanical properties of thin films and coating systems. In this study, a model of the friction contact at the interface of thin films and substrates is established using FE analysis about a cone indenter, which imitates a Berkovich nanoindenter. Finite element nanoindentation simulations were performed at three different interface friction contact conditions. The following conclusions were depicted through the study of the simulation data. First, for increasing values of the friction coefficient, the indenter’s force versus displacement response of the film/substrate-friction-contact (F/SFC) model coincides with the response of the film/substrate-perfectly-bonded (F/SPB) model. Second, when the indenter’s maximum displacement is less than 10% of the film thickness the deformed nanoindentation area is concentrated under the indenter tip for both F/SFC and F/SPB models. Third, a mechanical response is generated along the F/SFC interface while the mechanical response along the F/SPB interface is negligible. Finally, the nanoindentation simulation data indicate that the calculated mechanical properties intrinsically depend on the interfacial contact conditions of the film/substrate even when the maximum displacement of the indenter is controlled within the 10% of the thin-film thickness. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
