AN APPROXIMATE ALGORITHM FOR ELASTIC-PLASTIC 2-DIMENSIONAL ROLLING SLIDING CONTACT/

In this paper, we introduce an approximate algorithm for two-dimension al elastic-plastic rolling/sliding line contact which admits arbitrary forms of kinematic hardening models for nonproportional cyclic plasti city. The new hybrid scheme combines attractive features of the McDowe ll and Moyar [1,2] and Sehitoglu and Jiang [3,4] approaches, enabling prediction of subsurface cyclic plasticity and residual stresses for l oading conditions ranging from small to large cyclic plastic-strain ra nges. The approach is compared with finite element calculations of res idual stresses and subsurface cyclic plasticity for both high and low strength alloys. A comparison is presented with the previous McDowell- Moyar algorithm in terms of the prediction of subsurface residual stre sses within the half space over a wide range of loading conditions. (C ) 1997 Elsevier Science S.A.