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Hossein Ashrafi

Hossein Ashrafi

Assistant Professor

College: Faculty of Mechanical Engineering

Department: Mechanical Engineering - Solid Design

Degree: Ph.D

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Hossein Ashrafi

Assistant Professor Hossein Ashrafi

College: Faculty of Mechanical Engineering - Department: Mechanical Engineering - Solid Design Degree: Ph.D |

  •  Position: Assistant Professor of Solid Mechanics and Applied Design
  •  Institution: Faculty of Mechanical Engineering, University of Kashan, Iran
  •  Researcher ID: P-8090-2014
  •  Scopus Author ID: 12793997500
  •  M.Sc. (Sept. 2005 – August 2008): Graduated from Shiraz University, with Overall GPA 17.67 out of 20.
  •  Ph.D. (Sept. 2010 – August 2014): Graduated from K.N. Toosi University, with Overall GPA 19.43 out of 20.
  • Address: No. 316, 3rd Floor, Faculty of Mech. Eng., University of Kashan, Ghotbravandi Blvd., Kashan, Iran
  • ​P.O. Box:  8731751167
  • Telephone:  (+98) 31 55913439
  • Fax:  (+98) 31 55913444
  • URL:  https://faculty.kashanu.ac.ir/hashrafi/en​

 

نمایش بیشتر

Nonlinear Finite Element Modeling of Nanoindentation to Simulate Contact Behavior in Film-Substrate Interface

AuthorsH Ashrafi - M Farid
Conference Title2nd International Congress on Nanoscience and Nanotechnology
Holding Date of Conference2008-10-28
Event Placeتبریز
PresentationSPEECH
Conference LevelInternational Conferences

Abstract

In this study, a film/substrate, friction contact model was developed using ANSYS, in order to observe whether a difference of the calculated mechanical properties of thin films exists between film/substrate interfaces with friction contact and perfectly bonded interfaces. The thin film/substrate material system examined in FE analysis was SiO2/Si. Hence, the film/substrate-perfectly-bonded model with a fixed specimen simulation width was first set up and convergent tests had to be conducted to find an accurate and reasonable simulation width. Then the friction contact was defined at the film/substrate interface using the determined simulation width of the specimen. Finally, the presented nanoindentation film-substrate frictional contact model can also be utilized for micro and macro indentations when the dimensional parameters are changed correspondingly.

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