TITLE

THE EFFECT OF CRACKS ON STRESS STATE IN CRANE WHEEL HARD-SURFACE UNDER CONTACT LOADING

AUTHOR(S)
Tanasković, Drakče; Tatić, Uroš; Đorđević, Branislav; Sedmak, Simon; Sedmak, Aleksandar
PUB. DATE
March 2017
SOURCE
Tehnicki vjesnik / Technical Gazette;2017 Supplement1, Vol. 24, p169
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Shown in this paper are the results of microstructure testing of crane wheels, along with the repair welding procedure performed by hard-surfacing. Repair welding involved the application of a welded layer to the crane wheel, due to the damage that was caused by wear. Detailed analyses, based on the mechanical and chemical properties of the materials used for crane wheels, as well as for repair welding, were performed for the contact between the rail and wheel in real exploitation conditions, as well as by using numerical simulations. Numerical simulations were performed by using the finite element method. For the purpose of the analysis, contact stresses between the wheel and rail were calculated according to Hertz theory. Each of the numerical models was used to perform stress analysis with or without a crack in order to determine crack influence on the crane wheel integrity, and to compare the results with the values obtained theoretically. In addition, the symmetry of the contact area between the wheel and rail was taken into account, i.e. both symmetric and asymmetric contact models were made.
ACCESSION #
123048803

 

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