EXPERIMENTAL INVESTIGATION OF STRESS AND STRAIN FIELDS IN A DUCTILE MATRIX SURROUNDING AN ELASTIC INCLUSION

摘要: A method for measuring stress and strain distributions within a ductile material deforming by dislocational slip is developed. The exploits the transparency room-temperature ductility of silver chloride, combines techniques photoelasticity marker tracking. This used to investigate deformation an elasto-plastic matrix surrounding isolated stiff fiber, grain size being slightly smaller than fiber length. data are compared predictions finite element calculations which take be isotropic von Mises continuum. It found that this model does not fully capture all features experimental data. Data suggest cause observed discrepancies strong influence exerted boundaries orientation on distribution matrix. comparison also made between Eshelby equivalent inclusion calculation, show far higher level discrepancy results with calculations; caused fact calculation essentially elastic thus allows significant concentrations.