A NOTE ON A NUMERICAL BENCHMARK TEST - AN AXISYMMETRICAL SHELL UNDER RING LOADS

In this paper, a well-known numerical benchmark test which is usually solved with displacement control for low values of the load eccentrici ty is examined for a complete range of eccentricities of the ring load . For a certain range of the eccentricity the response shows either sn ap-through or snap-back, depending on the controlled variable. Thus, i n this range of eccentricities, the test can be used to verify impleme ntations of are-length algorithms, using the displacement controlled s olution as a reference. Moreover, results are presented for large ecce ntricities beyond the applicability of displacement-controlled strateg ies. (C) 1997 by John Wiley Br Sons, Ltd.