RI-IGABEM for 2D viscoelastic problems and its application to solid propellant grains

The isogeometric boundary element method (IGABEM) has a broad application prospect due to its exact geometric representation, excellent field approximation and only boundary discretization property. In this paper, IGABEM based on radial integration method (RI-IGABEM) is used for viscoelastic analysis of solid propellant grain. The memory stress, as the initial stress, leads to the boundary-domain integral equations and thus eliminates the only...