SOME STRONGLY DISCONTINUOUS NONCONFORMING FINITE ELEMENT APPROXIMATIONS FOR A FOURTH ORDER VARIATIONAL INEQUALITY WITH DISPLACEMENT OBSTACLE
位移障碍下一个四阶变分不等式的某些强间断非协调元逼近

In this paper, some strongly discontinuous nonconforming finite element approxi-mations, such as Morley's and De Veubeke's element, for the fourth order variationalinequality of clamped plate bending with displacement obstacle is considered. Theoptimal error bound O(h) is obtained.