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Technical gazette, Vol. 24 No. 3, 2017.

Original scientific paper

https://doi.org/10.17559/TV-20151126222916

Numerical and experimental determination of stress concentration factor for a pipe branch model

Darko Bajić ; University of Montenegro, Faculty of Mechanical Engineering, Džordža Vašingtona bb, 81000 Podgorica, Montenegro
Nikola Momčilović orcid id orcid.org/0000-0001-5343-5129 ; University of Belgrade, Faculty of Mechanical Engineering, Kraljice Marije 16, 11000 Belgrade, Serbia
Taško Maneski ; University of Belgrade, Faculty of Mechanical Engineering, Kraljice Marije 16, 11000 Belgrade, Serbia
Martina Balać ; University of Belgrade, Faculty of Mechanical Engineering, Kraljice Marije 16, 11000 Belgrade, Serbia
Dražan Kozak orcid id orcid.org/0000-0001-5245-4686 ; Mechanical Engineering Faculty in Slavonski Brod, Josip Juraj Strossmayer University of Osijek, Trg I. B. Mažuranić 2, HR-35000 Slavonski Brod, Republic of Croatia
Stefan Ćulafić ; University of Montenegro, Faculty of Mechanical Engineering, Džordža Vašingtona bb, 81000 Podgorica, Montenegro

Full text: croatian pdf 2.124 Kb

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Full text: english pdf 2.124 Kb

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Abstract

The subject of this paper is testing of complex geometrical structures, i.e. stress analysis of a pipe branch model of A6 third pipeline at Hydropower Plant Perućica, Nikšić. Analysis of pipe branch model stress distribution was carried out by using finite element method and experimental methods. Finite element method defined 3D pipe branch model. Numerical calculation defined critical locations on model, i.e. locations with the greatest stress concentration. Strain gauges were placed on identified critical locations. Measured stress values confirmed values obtained by using numerical calculation. Experimental measurements were also taken by using new digital image correlation (DIC) method. DIC method is an optical non-contact method that can provide full 3D stress field and enables better understanding of complex structures such as pipe branches. The aim of this paper was to determine stress concentration factor for the pipe branch model by using numerical and experimental analysis.

Keywords

finite element method; pipe branch model; strain gauges; stress concentration factor; 3D DIC method

Hrčak ID:

183024

URI

https://hrcak.srce.hr/183024

Publication date:

15.6.2017.

Article data in other languages: croatian

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