Response of welded thermoelastic solids to the rapid motion of thermomechanical sources parallel to the interface

The analysis of rapidly!moving thermomechanical surface sources is extended to the study of buried thermomechanical sources that move parallel to the interface of two welded dissimilar thermoelastic half! spaces at a constant subcritical speed[ The sources are manifest as body force line loads in the coupled equations of thermoelasticity\ and a 1!D steady!state situation is treated[ Exact integral transform solutions are obtained\ and expressions for the displacements and temperature changes are generated by analytical inversion of robust asymptotic versions of the transforms[ These expressions show that thermoelastic coupling e}ects increase with source speed\ and that the thermal source is always manifest in combination with a component of the mechanical source\ i[e[ an e}ective thermal source term exists[ The expressions also exhibit component functions that are in e}ect hybrids of functions that are seen in purely thermal and isothermal elastic solutions[ The critical source speed is de_ned as the minimum of the two asymptotic thermoelastic Rayleigh speeds in the half!spaces and\ when it exists\ the asymptotic thermoelastic Stoneley speed[ Exact expressions for these speeds are given\ and used to present some typical values