Estimate of accuracy of results of crack modeling in ANSYS Workbench The goal of this work is estimate of accuracy of results of linear fracture mechanics which can be received in software package ANSYS Workbench (hereinafter ANSYS WB) For this, ANSYS WB results of crack calculation were compared with results which were received by solution the same task by analytical method A surface semi-elliptic crack in a plate of finite height and width under effect of tensile load was selected as a sample for comparison ([1], example 9.27) A general view of the sample with a crack is presented in fig 1, and appropriate geometric dimensions and parameters are in table Fig A general view of the sample with a crack Parameter Value Geometry of the crack, [m] a b 0.04 0.03 Table Geometric dimensions and parameters Geometry of the Tensile stress, [Pa] sample, [m] W h t σ 0.3 0.5 0.1 100 In ANSYS WB a geometric model with a semi-elliptic surface crack (the model and the crack are similar to the sample) was created, then finite element mesh and necessary loads were applied As a result of a calculation, isosurfaces of displacements and equivalent stresses (fig 2), as well as a distribution of stress-intensity factors over the crack front (fig 3) were received a) displacements, [mm] b) equivalent stresses, [MPa] Fig Isosurface of Fig Isosurface of stress-intensity factor, [Pa·m0.5] Values of stress-intensity factors, which were received by ANSYS WB and by analytical method (according [1], example 9.27, f 12), are presented as graphs of stress-intensity factor as a function of number of a node of the crack front (fig 4) Stress-intensity factor, [Pa·m0,5] 24,5 24 23,5 23 22,5 11 16 21 26 31 36 41 46 51 56 61 Number of a node of the crack front Analytical method ANSYS Workbench Fig A distribution of the stress-intensity factor over the crack front Conclusion: Analysis of received results shows that the error of the solution by ANSYS WB is not more than 3% So, we can solve linear tasks of fracture mechanics by ANSYS WB References Stress Intensity Factors Handbook / Murakami Ed - Oxford., etc - ISBN 5-03002491-3 ... goal of this work is estimate of accuracy of results of linear fracture mechanics which can be received in software package ANSYS Workbench (hereinafter ANSYS WB) For this, ANSYS WB results of crack. .. number of a node of the crack front (fig 4) Stress-intensity factor, [Pa·m0,5] 24,5 24 23,5 23 22,5 11 16 21 26 31 36 41 46 51 56 61 Number of a node of the crack front Analytical method ANSYS Workbench. .. distribution of the stress-intensity factor over the crack front Conclusion: Analysis of received results shows that the error of the solution by ANSYS WB is not more than 3% So, we can solve linear