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S. Korga, A. Duda and Z. Ciekanowski

Drawpieces and Die Stampings, 249-257 (2004). [4] S. Korga, K. Lenik, Deform 3D and Solidworks FEM tests in conditions of sliding friction. Archives of Materials Science and Engineering 56, 89-92 (2012). [5] S. Korga, K. Lenik, FEM applications to model friction processes in plastic strain conditions. Archives of Materials Science and Engineering 41, 121-124 (2010). [6] P. Lacki, Modeling of friction in metal forming processes - (in polish). Publishing house - Częstochowa University of Technology, (2010). [7

Open access

M. Superczyńska, K. Józefiak and A. Zbiciak

, 1993. 8. S. Helwany, “Applied Soil Mechanics with Abaqus Applications”, John Wiley & Sons, Inc., 2007. 9. P. Y. Hicher, “Constitutive modelling of soils and rocks”, Ed. by J. F. Shao., ISTE Ltd, John Wiley and Sons, 2008. 10. Z. J. Kozyra, A. Zbiciak, K. Jozefiak, “FEM analysis of an influence of subway’s vibration on a building”, in Polish, TTS Technika Transportu Szynowego 18.9, 2012. 11. R. Kuszyk, M. Superczyńska, A. Lejzerowicz, “The research methods of elastic parameters of Pliocene clays for the

Open access

Stan Zurek

References [1] J. Sievert et al , ”Intercomparison of measurements of magnetic losses electrical sheet steel under rotation flux conditions”, Com- mission of the European Communities, Report EUR 16255 EN, EC Brussels, Luxembourg, 1995. [2] S. Zurek, ”Qualitative 3D FEM study of B and H distribu- tion circular isotropic samples for two-dimensional loss measure- ments”, Electrical Review (Przeglad Elektrotechniczny), R.91, NR 12/2015, 2015, pp. 43. [3] C. T. A. Johnk,Engineering electromagnetic fields & waves

Open access

Paweł Sidun and Andrzej Łukaszewicz

Abstract

In this paper selected aspects of numerical modelling of bending pipes process are described. Elasto-plastic material model was used in COMSOL FEM environment. The results of numerical analyses of two kinds of steel were presented. The correctness of the proposed model was verified based on comparison shapes of deformed pipe profile obtained at the ending step of bending both from numerical simulations and experiment.

Open access

S. Sobieszczyk, W. Wojnicz and B. Nowak

FEM Approach to Estimate the Behaviour of Biocomposite Metal-Surface Coating Systems

A three dimensional (3D) model of biocomposite metal-surface coating system, which is influenced by known external forces, is proposed. This model consists of the metallic substrate (Ti6A14V) and the hydroxyapatite (HA) coating. Using FEM (finite element method), strain-stress maps of model were generated for investigating relations between the extreme stress of HA coating and the magnitude of external force and the thickness of the coating. The analysis of numerical simulations results confirms that the system with the greatest coating thickness (i.e. 10-3 m) has the least extreme stress in this surface coating.

Open access

R. Wieszała, J. Piątkowski and H. Bąkowski

. & Pypno, C. (2011). Strength and elastic stability of cranes in aspect of new and old design standards. Mechanika. 17, 226-231. [23] Patel, P. & Patel, V.K. (2013). A review on structural analysis of overhead crane girder using FEA technique. International Journal fo Engineering Science and Innovative Technology. 2, 41-44. [24] Bąkowski, H. & Stanik, Z. (2010). Applications of FEM for explanation of influence of the operating parameters upon failure wear of the piston in a diesel engine. Mechanik. 4, 298-299. [25] Posmyk

Open access

Pavol Sejč and Tomáš Világoš

Abstract

The submitted paper deals with the simulation of thermal cycles during laser welding of aluminum sheets using Finite Element Method (FEM). After the design and creation of the simulation model, the simulation results were verified by the thermal cycles measured during the experiment on real samples. Verification has shown that, despite the differences that have resulted from some simplifications, the proposed model corresponds to the actual behavior of the material used during the laser welding process.

Open access

Artur Olszewski, Michał Wodtke and Artur Wójcikowski

Abstract

The article presents the analysis, project, and experimental examination of an original rigid riser for Coil Tubing Pipes. The principle of riser operation is based on the use of friction forces. The research included the FEM analysis of the designed riser, calculations of the required bolt tensions, and checking the effect of the clamping force on stress distribution in the pipeline. The results of computer simulation were verified on a specially designed test rig. The described riser design was implemented on the LOTOS Petrobaltic platform, thus eliminating the need for purchase and installation of expensive elastic risers.

Open access

Karol Niklas and Janusz Kozak

applications,” Int. J. Fatigue, vol. 34, no. 1, pp. 2–16, 2012. 41. D. Frank, “Fatigue strength assessment of laser stake-welded T-joints using local approaches,” Int. J. Fatigue, vol. 73, pp. 77–87, 2015. 42. K. Niklas, “Calculations of notch stress factor of a thin-walled spreader bracket fillet weld with the use of a local stress approach,” Eng. Fail. Anal., vol. 45, 2014. 43. A. Cichanski, “The influence of mesh morphology on the SCF in 2D FEM analysis of flat bars with opposite V-notch under tension,” in 22nd International Conference on Engineering

Open access

M. Kwietniewski, D. Miedzińska and T. Niezgoda

Abstract

The problem of effective gas extraction from Polish shale rocks is an interesting research subject for scientists. A properly selected proppant, which protects cracks from closing during the fracturing process, inestimably contributes to an increase of extraction. Grains of proppant are transported along with a fracturing medium to reach the deepest regions of the crack. The proper support of the crack provides an easy flow of gas, therefore it is important in terms of extraction efficiency. This paper shows the interactions of a proppant grain with the crack surface in shale rock. FEM analysis was conducted to observe the stress region, which is generated as a result of pressing the grain into the crack surface. A model of a sphere which was pressed into the rock model with constant velocity was applied. The received results of stress depend on material properties and a range of proppant grain pressing.