Loading an unloading behavior of a thermoplastic disc

The calculation of loading and residual stresses, and associated strains an d displacements, are reported for shrink fitted rotating discs at elevated temperatures. A range of material behaviour is considered including unloadi ng described by an actual material curve, or modelled by isotropic or kinem atic hardening with a variable Bauschinger effect. Various collapse loads a re obtained and discussed for design boundaries. The influence of reloading on the residual stresses is also studied. It is shown that after the first few loadings of a disc, the residual stress field becomes constant. (C) 20 01 Elsevier Science Ltd. All rights reserved.