Elastic-Plastic Mixed-Mode Fracture Criteria and Parameters

摘要: I. Mixed-mode crack behavior under plane stress and strain small scale yielding.- 1.1 Governing equations.- 1.1.1 Plane strain.- 1.1.2 stress.- 1.1.3 Boundary conditions for different types of dominating fracture mechanism.- 1.2 Numerical iterative method solving the nonlinear eigenvalue problems.- 1.3 Application J-integral to plastic intensity factor determination.- 1.3.1 1.3.2 1.4 Family crack-tip fields characterized by 1.4.1 1.4.2 1.5 Finite element analysis distributions at tip.- 1.6 Conditions existence mixed mode fracture.- II. Modeling growth damage zone.- 2.1 A modified strain-energy density approach.- 2.1.1 Elastic energy density.- 2.1.2 Plastic 2.2 Strain distributions.- 2.3 Fracture 2.3.1 brief review.- 2.3.2 zone size.- 2.4 Relation between cracks resistance process parameters in elastic-plastic solids.- 2.5 Elastic-plastic approach modeling fatigue behavior.- 2.6 Some aspects path prediction.- III. Experimental investigation propagation.- 3.1 Specimens study processes material properties.- 3.2 Method interpretation cyclic characteristics.- 3.3 Effect biaxial on aluminum alloys.- 3.4 Influence loading high strength steels.- 3.5 Fatigue trajectories alloys IV. Models predicting rate life.- 4.1 Crack direction criterion.- 4.2 Criteria equivalent a complex state.- 4.3 model loads.- 4.4 An state with taking into account their orientation.- V. Practical applications.- 5.1 gas turbine engine disks simulation operational conditions.- 5.1.1 Stress analysis.- 5.1.2 model.- 5.1.3 Full size disk experiments.- 5.2 pressurized cylinder.- 5.2.1 5.2.2 Results discussion.- Reference.