4. Summary of results

The objective of this test case is completely fulfilled since the activation of creep via threshold detection is very precise (of the order of \({10}^{-8}\text{\%}\) error). Of course, since it is a viscous phenomenon, time discretization plays a very important role, especially around threshold activation. In this test case, particular care has been taken to surround the time when the threshold is reached precisely in order to obtain satisfactory results.