Theoretical study including physic-based material model to identify underlying effect of vibration amplitude on residual stress distribution of ultrasonic burnishing process
Authors:
- Reza Teimouri,
- Sebastian Skoczypiec
Abstract
The potential of distribution of compressive residual stress at deep surface layers caused by ultrasonic-based surface sever plastic deformation (SSPD) has attracted researchers' attention to deeply study the mechanism of the process by simulation models. In majority of the researches, macro-mechanical Johnson-Cook (JC) model was utilized to govern material constitutive behavior. However, the large differences between measured and predicted values of residual stress of some materials imply that the underlying mechanism is still unclear and merits further studies. In the present work, a new physics-based constitutive equation incorporating micromechanics of initial grain size, dislocation evolution, dislocation drag and acoustic softening has been developed to obtain plastic flow stress. Then, the mechanic of the ultrasonic burnishing process incorporating superposition of static and dynamic loads was simulated using concept of expanding cavity model (ECM). The residual stress has been further calculated through combination of developed models aiming to discover the undying mechanism of vibration amplitude effect on stress fields. In order to confirm the obtained results, series of ultrasonic burnishing experiments have been carried out on AA6061-T6 under different vibration amplitude. The obtained results revealed that the developed analytical models of residual stress field are considerably more accurate than those previously established that took the macro-mechanical constitutive models to calculate plastic flow stress. Through the developed simulation model, it was studied in depth that how the vibration amplitude as the most adjustable ultrasonic vibration parameter determine variation of residual stress field. It has been demonstrated that the acoustic softening because of presence of ultrasonic energy field has the greatest impact in generation of compressive residual stress in surface and beneath layers.
- Record ID
- CUT02e57a7e0216456d8996fd1c76ae5ceb
- Publication categories
- ;
- Author
- Journal series
- Journal of Manufacturing Processes, ISSN 1526-6125
- Issue year
- 2022
- Vol
- 80
- Pages
- 116-131
- Other elements of collation
- il. (w tym kolor.); Bibliografia (na s.) - 131; Bibliografia (liczba pozycji) - 43; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 80
- Keywords in English
- ultrasonic burnishing, theoretical simulation, physics based material model, residual stress field
- ASJC Classification
- ; ;
- DOI
- DOI:10.1016/j.jmapro.2022.05.046 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/pii/S1526612522003607 Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 140
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT02e57a7e0216456d8996fd1c76ae5ceb/
- URN
urn:pkr-prod:CUT02e57a7e0216456d8996fd1c76ae5ceb
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.