ON STRESS CONDITIONS AND COMPUTATIONS AT BI-MATERIAL INTERFACES

Conditions on stresses and their first spatial derivatives across a fl at Di-material interface in three-dimensional linear dynamic elasticit y are obtained by replacing the displacement continuity condition with continuity conditions on in-plane strains and curvatures. The stresse s on one side of interfaces and near them in multi-constituent structu res are readily computed using these conditions-formulae and not solvi ng the full problem, if the stresses on the other side have been compu ted having solved the full, problem.