CHEMICAL STRESSES IN COMPOSITE CIRCULAR-CYLINDERS

The chemical stresses in a composite circular cylinder have been investigated. The mass transfer follows the diffusion equation which was solved using the Laplace transformation technique. Both diffusion processes of constant average concentration and constant surface concentration are considered. The stresses arising from the mass transfer are derived. Two situations are considered: one is plane strain and the other is zero axial force. The largest maximum shear stress occurs at the position near the surface in the outer medium. The positions having the largest maximum shear stress are most probable to have plastic deformation. The outer medium cannot avoid plastic deformation during the mass transfer at constant average concentration.