THE ROTATIONALLY PERIODIC SYMMETRY IN BEM

Rotationally periodic symmetry is exploited in 2-D elastostaticcalculation using the BEM.It is proved that the coefficient matrices of the globalboundary element equations for the rotationally periodic system are block-circulant solong as a kind of symmetry-adapted reference coordinate system is adopted.Furthermore,an efficient algorithm,which partitions the original problem of solvingthe boundary element equations into a series of subproblems,is proposed.The methodpermits arbitrary load distribution for stress analysis problems.