The purpose of the present work is to study collinear unequal crack series in magnetoelectroelastic materials, which are of more practical significance than the widely studied collinear equal cracks. Fracture analysis is performed by the combined methods of distributed generalized dislocations, Green's function and singular integral equations (SIEs). The theoretical derivation is validated by the degeneration of SIEs in special cases. Parametric studies on the numerical results of mechanical strain energy release rate (MSERR) yield the following conclusions. (a) As two unequal cracks approach each other, interference occurs in crack tip fields, resulting in an obvious increase of MSERR. The ratio between the crack space and the length of the shorter crack is a main factor affecting the interference. (b) Negative or positive electric loading may shield or enhance crack growth, respectively. In the case of positive magnetic permeability, the effect of magnetic loading is analogous to that of electric loading; however, if magnetic permeability is negative, the result is completely opposite. (c) Positive values of magnetic permeability are found to be more reasonable than the negative values.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.