Simulation of Stress Distribution in a Thick- Walled Bushing Produced by Die-Casting

• Autorzy: Pisarek B. P. , Kołakowski D. , Pacyniak T.

Identyfikatory

DOI

10.1515/afe-2017-0143

• Języki publikacji: EN

Abstrakty

EN

Metallographic investigations and a computer simulation of stresses in a gravity die-casting bushing were performed. Simulation of the casting process, solidification of the thick-walled bushing and calculations of the stress was performed using MAGMA5.3 software. The size variability of phases κ_II affecting the formation of phase stresses σ_f, depending on the location of the metallographic test area, was identified. The distribution of thermal σ_t and shrinkage stresses σ_s, depending on the location of the control point SC in the bushing's volume, was estimated. Probably the nature of these stresses will change slightly even after machining. This can cause variations in operating characteristics (friction coefficient, wear). Due to the strong inhomogeneity of the stress distribution in the bushing's casting, it is necessary to perform further tests of the possibility to conduct thermal treatment guaranteeing homogenization of the internal stresses in the casting, as well as to introduce changes in the bushing's construction and the casting technology. The paper presents the continuation of the results of research aimed at identifying the causes of defects in the thick-walled bushing, die-casting made of CuAl10Fe5Ni5Cr aluminium bronze.

Słowa kluczowe

EN

mechanical properties; metallography; computer simulation; residual stress; complex aluminium bronze

PL

właściwości mechaniczne; metalografia; symulacja komputerowa; naprężenia własne; brąz aluminiowy

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2017
• Tom: Vol. 17, iss. 4
• Strony: 127--132
• Opis fizyczny: Bibliogr. 7 poz., rys., tab., wykr.

Twórcy

autor

Pisarek B. P.

• Lodz University of Technology, Department of Materials Engineering and Production Systems, ul. Stefanowskiego 1/15, 90-924 Łódź, Poland

autor

Kołakowski D.

• Lodz University of Technology, Department of Materials Engineering and Production Systems, ul. Stefanowskiego 1/15, 90-924 Łódź, Poland

autor

Pacyniak T.

• Lodz University of Technology, Department of Materials Engineering and Production Systems, ul. Stefanowskiego 1/15, 90-924 Łódź, Poland

Bibliografia

• [1] Kaschnitz, E., Heugenhauser, S. & Schumacher, P. (2015). A benchmark for the validation of solidification modelling algorithms, Materials Science and Engineering. 84, 1-7. DOI: 10.1088/1757-899X/84/1/012051.
• [2] Isfahani, A.H.G. & Brethour, J.M. (2012). Simulating Thermal Stresses and Cooling Deformations. Die Casting Engineer. March, 34-36.
• [3] Xue, X. Wang, Y. P. (2013) Numerical Simulation of Casting Thermal Stress Based on Finite Difference Method. Rev. Adv. Mater. Sci. 33, 410-415.
• [4] Gwiżdż, A., Żuczek, R. & Nowak, M. (2012). Analysis of the State of Stress in Cast Bodies, Covers and Wedges of the Wedge Gate Valves Used in Gas Networks. Transactions of Foundry Research Institute. Volume LII, Number 4, 300-325. DOI: 10.7356/iod.2012.23.
• [5] Senczyk, D., Moryksiewicz, S. (February 12, 2017). Treatments - concepts and classification. senczyk_naprezenia_wlasne.pdf. Retrieved June 06, 2017, from http://www.badania-nieniszczace.info/Badania-Nieniszczace-Nr-01-03-2007/pdf/senczyk_naprezenia_wlasne.pdf. (in Polish).
• [6] Sakwa, W. (1981). Basic problems of stress in castings. Krzepnięcie Metali i Stopów. 4, 5-9. (in Polish).
• [7] Pisarek, B.P., Kołakowski, D. & Pacyniak, T. (2016). Analysis of the Causes of Cracks in a Thick-Walled Bush Made of Die-Cast Aluminum Bronze. Archives of Foundry Engineering. 16(4), 119-124.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).