The effect of a nearby circular thermal inclusion on the irregular shape of a coated inhomogeneity with internal uniform hydrostatic thermal stresses

摘要

We show that under a uniform temperature change, a uniform hydrostatic residual thermal stress state can still be maintained inside a coated inhomogeneity of irregular shape despite its interaction with a nearby circular thermal inclusion. Our analysis indicates that the internal uniform hydrostatic thermal stress field inside the inhomogeneity, the constant mean stress within the coating and the constant hoop stress along the inhomogeneity-coating interface on the coating side are unaffected by the existence of the nearby circular thermal inclusion. In contrast, the irregular shape of the coated inhomogeneity is attributed solely to the presence of the circular thermal inclusion.