Simulation of elasto-plastic deformation at scratch test

Authors

  • Irina Valeeva Frantsevitch Institute for Problems of Materials Science NASU, Kyiv https://orcid.org/0000-0001-5997-9012
  • Ivan Goroshko Taras Shevchenko National University of Kyiv

DOI:

https://doi.org/10.17721/1812-5409.2024/1.10

Keywords:

scratch test, finite element simulation, film on substrate, ANSYS, NLAD

Abstract

Scratch test is an important investigation method in materials science. It is used to evaluate the mechanical properties of materials and structures, adhesion of coatings, etc. The article is devoted to the actual problem of implementing finite element simulation of scratch tests using ANSYS software with automated nonlinear remeshing. Large plastic deformation occurs at scratch test simulation, which leads to significant distortion of some finite elements and, consequently, to interruption of calculations. When critical values of element distortion are reached, remeshing procedure is launched. That procedure replaces the distorted elements with new ones with improved characteristics. The solution is mapped to a new mesh. A three-dimensional finite element model is built to simulate scratch test of structure. Scratch test simulation requires a large amount of RAM and a lot of disk space to store results and auxiliary files. Therefore, to reduce the calculation time and the required disk space, the dimension of three-dimensional finite element model is reduced by taking into account the symmetry of the problem and using larger elements further from the contact zone. The fields of displacement, stress, and strain on the surface and inside the tested samples were obtained as a result of scratch test simulation. Comparison of the results of scratch test simulation with experimental data can be used in further study to determine the mechanical properties of materials and structures.

Pages of the article in the issue: 57 - 61

Language of the article: Ukrainian

References

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Published

2024-09-12

How to Cite

Valeeva, I., & Goroshko, I. (2024). Simulation of elasto-plastic deformation at scratch test. Bulletin of Taras Shevchenko National University of Kyiv. Physical and Mathematical Sciences, 78(1), 57–61. https://doi.org/10.17721/1812-5409.2024/1.10

Issue

Vol. 78 No. 1 (2024)

Section

Differential equations, mathematical physics and mechanics

License

Copyright (c) 2024 Irina Valeeva, Ivan Goroshko

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