Original scientific paper

Performance analysis of substitution of applied materials using fracture mechanics parameters

Nedeljko Vukojević orcid.org/0000-0002-3470-0991 ; University of Zenica, Faculty of Mechanical Engineering, Fakultetska br.1, 72 000 Zenica, Bosnia and Herzegovina
Mirsada Oruč orcid.org/0000-0002-9980-7650 ; University of Zenica, Faculty of Mechanical Engineering, Fakultetska br.1, 72 000 Zenica, Bosnia and Herzegovina
Dušan Vukojević ; University of Zenica, Faculty of Mechanical Engineering, Fakultetska br.1, 72 000 Zenica, Bosnia and Herzegovina
Fuad Hadžikadunić ; University of Zenica, Faculty of Mechanical Engineering, Fakultetska br.1, 72 000 Zenica, Bosnia and Herzegovina
Omer Beganović ; University of Zenica, Faculty of Mechanical Engineering, Fakultetska br.1, 72 000 Zenica, Bosnia and Herzegovina

Abstract

By replacing the S355 conventional structural steel with V/Nb base micro-alloy steel it is possible to achieve a considerable reduction in the structure mass itself without safety risk, which is also proved by testing fracture mechanics properties of the materials. The numerical results have been also confirmed by analyzing the reliability of the selected materials, with special reference to safety from fracture hazard in the steel welded joints under consideration. Presented in the paper are the results of the numerical evaluation of the bridge crane steel structure under static and dynamic conditions for two steel grades and dimensions. This testing methodology can be applied to any kind of mechanical structure. It can also stress the importance of fracture mechanics application to the evaluation of the condition and behaviour of significant mechanical structures. The immediate effect of this investigation is the saving in the mass of the material used, together with a considerable fracture risk reduction, as well as an improvement in the working properties of the bridge crane steel structure.

Keywords

dynamic response; finite element analysis; fracture mechanics; bridge crane; safety from fracture hazard; welded joint

Hrčak ID:

62915

URI

https://hrcak.srce.hr/62915

Publication date:

31.12.2010.

Article data in other languages: croatian

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