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Zwicker, Mfr
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Publications (3/3 displayed)
- 2023The influence of hydrostatic pressure build-up on asperity flattening under bulk plastic deformationcitations
- 2022Strength of three-sheet spot welds with critical nugget sizes in tensile shear, cross tension, peel and fatigue testscitations
- 2022The influence of strain hardening and surface flank angles on asperity flattening under subsurface deformation at low normal pressurescitations
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article
The influence of hydrostatic pressure build-up on asperity flattening under bulk plastic deformation
Abstract
The influence of the bulk modulus of metal forming lubricants on their load-carrying capacity during model asperity flattening under bi-axial subsurface deformation was experimentally and numerically studied. The experimental results showed that lubricants with different bulk moduli do not change the asperity flattening noticeably when subsurface deformation occurs. Numerical simulations revealed that a substantial change could only be obtained by very low theoretical bulk moduli. If the bulk modulus remains the same and material strength varies instead, it is seen that harder materials experience more flattening than the softer ones when being compared at the same strain.