On interface element insertion into three-dimensional meshes

An algorithm is summarized for inserting zero-thickness interface elements or “couplers” into finite element meshes in two and three dimensions. Using only element connectivity, couplers are inserted according to regions within the analysis domain, a geometrically intuitive means to designate their locations. A wide class of volume elements and interface couplers are treated. A three-dimensional test case verifies that the algorithm generates meshes passing the patch test.