caa a22 4500 469124784 CHVBK 20180323133148.0 cr unu---uuuuu 170328e19921201xx s 000 0 eng 10.1007/BF00015615 doi (NATIONALLICENCE)springer-10.1007/BF00015615 Comparison between various displacement-based stress intensity factor computation techniques [Elektronische Daten] [I. Lim, I. Johnston, S. Choi] The computation of the stress intensity factor at a crack tip can be determined from the nodal displacements along the crack face. Amongst the existing techniques available are the Displacement Correlation Technique (DCT), the Quarter-Point Displacement Technique (QPDT) and the Displacement Extrapolation Technique (DET). As each of these techniques are popular in general LEFM analysis, an evaluation of their relative performances would seem appropriate. Previously, only limited comparisons have been made. In this paper the comparison is made on the basis of extensive numerical analysis. In addition two new variants to the DET are introduced and shown to be more efficient computationally. The results indicate that the QPDT is generally more accurate and consistent in performance than the DCT. The DET, however, exhibited some erratic characteristics. Detailed examinations revealed that the linear regression analysis employed in the DET for the extrapolation is highly sensitive to the nodal displacement distribution. Both the new variant DETs exhibited much more consistent behaviour. Kluwer Academic Publishers, 1992 Lim I. Department of Civil Engineering, Monash University, 3168, Clayton, Victoria, Australia aut Johnston I. Department of Civil Engineering, Monash University, 3168, Clayton, Victoria, Australia aut Choi S. Division of Geomechanics, CSIRO, 3149, Syndal, Victoria, Australia aut International Journal of Fracture Kluwer Academic Publishers 58/3(1992-12-01), 193-210 0376-9429 58:3<193 1992 58 10704 https://doi.org/10.1007/BF00015615 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00015615 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lim I. Department of Civil Engineering, Monash University, 3168, Clayton, Victoria, Australia aut NATIONALLICENCE 700 1- Johnston I. Department of Civil Engineering, Monash University, 3168, Clayton, Victoria, Australia aut NATIONALLICENCE 700 1- Choi S. Division of Geomechanics, CSIRO, 3149, Syndal, Victoria, Australia aut NATIONALLICENCE 773 0- International Journal of Fracture Kluwer Academic Publishers 58/3(1992-12-01), 193-210 0376-9429 58:3<193 1992 58 10704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer