Discussion

Firstly, as expected, the shear locking has been detected. Secondly, the adaptation based on modification of the initial mesh by the optimized value of the longitudinal order of approximation leads to final error value below the admissible error value, in contrast to the modification based on the maximum value of the longitudinal order of approximation *p* = 8. Again, the discrete values of parameters controlling the adaptation process have resulted in no further adaptation after the initial mesh modification. One can see, however, that the standard *hp*-adaptation leads to the final error level below the admissible value again. We show in the next example that this is not the rule.



 admissible relative error value *γT* = 2.0 %.

#### 5.2.3. A Quarter of a Bending-Dominated Shell

p,q

\*
