Effect of crystal orientation on indentation-induced residual stress field: simulation and experimental validation

Numerical results related to the study "Effect of crystal orientation on indentation-induced residual stress field: simulation and experimental validation".

Experimental determination of local residual stress fields beneath a spherical indent on a <001> copper single crystal revealed the presence of a significant tensile residual stress zone. This finding was adequately reproduced by Crystal Plasticity Finite Element simulations. Further simulations of one spherical indent on many other crystal orientations showed a strong variation of the residual stress field with crystal orientation. Accumulative effects of five superposing indents were simulated on two extreme orientations <001> and <111>. The simulations showed that plastic anisotropy is responsible for potentially uneven compressive residual stresses after surface mechanical treatments.

Mots clés

• Crystal Plasticity Finite Element
• Single crystal
• Shot-peening
• Indentation