Data

The dimensions of a quarter of the plate are such that the thinness ratio of the plate is *l*/*t* = 3.1415 × 10−2/0.03 × 10−2. The initial mesh is coarse. Its data are as follows: the longitudinal approximation order *p* = 1, the transverse approximation order *q* = 2, and the element size *h* = *l*/2. This mesh is shown in Figure 9. In the error analysis, the target error *γT* = 0.01 and the ratio *γI*/*γT* = 3.
