Computer simulation of pressing a ceramic ball into elastic-plastic material

• Autorzy: Berczyński S. , Grochała D. , Grządziel Z.
• Języki publikacji: EN

Abstrakty

EN

This article describes distributions of stresses and strains created by pressing a ball with 80 HRC hardness into soft 35HRC steel, which occurs in the technological process of burnishing. We present a computer model and a solution developed with the Nastran FX program, based on the finite elements method. The validity of the model has been checked using a small force applied on the ball, within the range of elastic deformations, where Hertz formulas are applicable. Then computations have been made for a pressure force of 30 000 N, which corresponds to hardness testing conditions by the Brinell method. The dimensions of plastic indentations from simulations and experiments are compared.

Słowa kluczowe

EN

computer simulation; ceramic ball; elastic-plastic material; burnishing; Hertzian stresses; deformations; contact

• Wydawca: Wydawnictwo Naukowe Akademii Morskiej w Szczecinie
• Czasopismo: Zeszyty Naukowe Akademii Morskiej w Szczecinie
• Rocznik: 2015
• Tom: nr 42 (114)
• Strony: 9--13
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Berczyński S.

• West Pomeranian University of Technology, Faculty of Mechanical Engineering and Mechatronics 70-310 Szczecin, Aleja Piastów 19

autor

Grochała D.

• West Pomeranian University of Technology, Faculty of Mechanical Engineering and Mechatronics 70-310 Szczecin, Aleja Piastów 19

autor

Grządziel Z.

• Maritime University of Szczecin, Institute of Basic Technical Sciences 70-500 Szczecin, ul. Wały Chrobrego 1–2

Bibliografia

• 1. BUDYNAS, R. & NISBETT, K. (2008) Shigley’s Mechanical Engineering Design. 8 th edition. McGraw-Hill.
• 2. DEEG, E.W. (1992) New algorithms for calculating hertzian stresses, deformations, and contact zone parameters. AMP Journal of Technology. 2. November. pp. 14–24.
• 3. GROCHAŁA, D. (2011) Nagniatanie narzędziami hyrostatycznymi powierzchni przestrzennych złożonych na frezarkach CNC. Dissertation, West Pomeranian University of Technology, Szczecin
• 4. GROCHAŁA, D., BERCZYŃSKI, S. & GRZĄDZIEL Z. (2014) Stress in the surface layer of objects burnished after milling. International Journal of Advanced Manufacturing Technology. 72. pp. 1655–1663.
• 5. LOPEZ de LACALLE, L.N., LAMIKIZ, A., MUNOA, J. & SANCHEZ J.A. (2005) Quality improvement of ball-end milled sculptured surfaces by ball burnishing. International Journal of Machine Tools and Manufacture. 45. pp. 1659– 1668.
• 6. LOPEZ de LACALLE, L.N., LAMIKIZ, A., SANCHEZ, J.A. & ARANA J.L. (2007) The effect of ball burnishing on heattreated steel and inconel 718 milled surfaces. International Journal of Machine Tools and Manufacture. 32. pp. 958– 968.
• 7. Nastran FX (2010) [Online] Available from: http://midasfea.se/mechanical.php [Accessed: 7 July 2015]
• 8. SENCZYK, D. (2005) Podstawy tensometrii rentgenowskiej. Poznań: Wydawnictwo Politechniki Poznańskiej.
• 9. Vink System Design & Analysis (2015) [Online] Available from: http://en.vinksda.nl/toolkit-mechanical-calculations/ hertz-contact-stress-calculations [Accessed: 7 July 2015]