Elastic-Plastic Contact Modeling. Part II: Numerical Simulations and Program Validation

Abstract

Elastic plastic spherical contact is simulated using an algorithm proposed in a companion paper. Materials of contacting bodies are assumed to have different behaviours: rigid (R), elastic (E), elastic-plastic with isotropic hardening (EP) or elastic - perfectly plastic (EPP). Algorithm improvements allow for a high resolution in digitization problem. A modified interference equation is proposed for the EP-EP contact with symmetry about the common plane of contact. Program predictions are matched against numerical results already published and a good agreement is found. Experimental validation of residual print depth in the R-EPP contact gives further confidence in the newly proposed algorithm.