THREE DIMENSIONAL STRESS FIELD AND STRESS INTENSITY FACTOR CALIBRATION FOR A CENTRAL CRACKED PLATE
MOREIRA P. M. G. P., PASTRAMÄ Ć. D., P. M. S. T. DE CASTRO DEPARTMENT OF MECHANICAL ENGINEERING AND INDUSTRIAL MANAGEMENT, UNIVERSITY OF PORTO, PORTUGAL; DEPARTMENT OF STRENGTH OF MATERIALS, UNIVERSITY POLITEHNICA OF BUCHAREST, ROMANIA,
The purpose of this work is to obtain accurate three dimensional stress field and intensity factor solutions for a plate with a central crack using the Finite Element Method. For the comparison with the three dimensional solutions, further to reference values given by the literature, two dimensional Finite Element Analyses were performed. The study reveals a good agreement between the present three dimensional analysis and the literature solutions, especially in the mid-plane of the plate. The plane strain behaviour near the crack front and the variation of the opening stress are discussed, together with the possible use of a simple formula for the three dimensional stress intensity factor using the two dimensional value.
