Jf. Durodola et Rt. Fenner, OVERHAUSER TRIANGULAR ELEMENTS FOR 3-DIMENSIONAL POTENTIAL PROBLEMS USING BOUNDARY-ELEMENT METHODS, International journal for numerical methods in engineering, 39(24), 1996, pp. 4183-4198
Interpolation to boundary data and one-dimensional Overhauser parabola
blending methods are used to derive Overhauser triangular elements. T
he elements are C-1-continuous at inter-element nodes and no functiona
l derivatives are required as nodal parameters. These efficient parame
tric representation elements are used to solve three-dimensional poten
tial problems using the Boundary Element Method (BEM). Results obtaine
d are generally as accurate as those obtained using Overhauser quadril
ateral elements.