Metalurgija, Vol. 49 No. 4, 2010.
Izvorni znanstveni članak
A simple method to determine ductile fracture strain in a tensile test of plane specimen’s
S. Kut
; Faculty of Mechanical Engineering and Aeronautics, Rzeszów University of Technology, Rzeszów, Poland
Sažetak
The ultimate ductile fracture strain determination method for the specimen of circular cross-section has been presented by FEM method. The state of stress in individual locations of tensile tested specimen in successive process phases has been determined unequivocally with the stress triaxiality k. It has been demonstrated that the plane specimen’s fracture strain value in the fracture location varies and depends on the state of stress, which is present in the final specimen’s tension phase. The ductile fracture strain values in various fracture locations for steel, copper and aluminum specimen have been experimentally determined and compared. The simple and practical method to determine this strain has been proposed.
Ključne riječi
tensile test; ductile fracture strain; stress triaxiality; finite element method (FEM)
Hrčak ID:
57432
URI
Datum izdavanja:
1.10.2010.
Posjeta: 10.768 *