Numerical simulations of mechanical peening of titanium alloy

• Autorzy: Kosiuczenko K. , Barnat W. , Napadłek W. , Bogdanowicz Z.
• Języki publikacji: EN

Abstrakty

EN

Mechanical peening is based on striking a worked material surface by hard balls (shot).In this work, a pneumatic method, applied for double-sided shot peening of the worked sample surface, was selected. The samples were made of the titanium alloy WT3-1 (Ti-6Al-2Cr-2Mo). The described work consists of two parts. The laboratory experiment was conducted in first part. After it realization, various observations were conducted. Observations of surface topography for samples were carried out before and after shot peening using scanning electron microscope (SEM). They revealed quite regular plastically deformed zones generated due to applied working. Neither microcracks, spallings nor delaminations in deformed surface layer of the titanium alloy were observed which attests to correct technological process of the surface hardening. The numeric simulation of the peening process was conducted in part second. The physical model described non-simultaneous impact of three steel balls onto rectangular metal sheet made of the above-mentioned titanium alloy. Numerical FEM analysis for nonlinear dynamics (explicit) was carried out using LS-Dyna software (Livermore Software Technology Corporation). In the paper are presented maps of the material effort in surface layers for times corresponding to conditions after impacts of the first, second, and the third ballof cast steel shot.

Słowa kluczowe

EN

surface layer forming; mechanical shot peening; impact; numerical simulation; finite element method

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2008
• Tom: Vol. 15, No. 1
• Strony: 137--144
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Kosiuczenko K.

autor

Barnat W.

autor

Napadłek W.

autor

Bogdanowicz Z.

• Military University of Technology, Department of Mechanics and Applied Computer Science Kaliskiego Street 2, 00-908 Warsaw, Poland tel: [phone],fax: [phone],

Bibliografia

• [1] Przybylski, W., Burnishing Technology (in Polish), WNT, Warsaw 1987.
• [2] Nakonieczny, A., Hardening via peeling (in Polish), Proceedings of the Conference Techniques for Surface Layers Production, pp. 154-161, Rzeszów 1998.
• [3] Meo, M., Vignjevic, R., Finite Element Analysis of Residual Stress Induced by Shot Peening Process, Cranfield University, Bedford 2003.
• [4] Majzoobi, G. H., Azizi, R., Alavi Nia, A., A Three-dimensional Simulation of Shot Peening Process Using Multiple Shot Impacts, Journal of Materials Processing Technology, Vol. 164-165, pp. 1226-1234, 2005.
• [5] Dai, K., Villegas, J., Stone, Z., Shaw, L., Finite Element Modelling of the Surface Roughness of 5052 Al Alloy Subjected to a Surface Severe Plastic Deformation Process, University of Connecticut, USA 2004.
• [6] Zaleski, K., Lipski, Z., Neural Network Modelling of Centrifugal Peeling of Titanium Alloy (in Polish), Przeglad Mechaniczny, No. 12, Warsaw 2006.
• [7] Wieczorek, M., Kosiuczenko, K., An Attempt for Numerical Simulation of a Burnishing Process (in Polish), XXX School on Surface Engineering, Ustroń 2002.
• [8] Keyword Manual 970 Volume 1&2, Livermore Software Technology Corp, www.lstc.com.
• [9] Theory Manual 2006, Livermore Software Technology Corp, www.lstc.com.