Numerical Study on the Hydrostatic Test of Penstock

Abstract

The hydrostatic test of a full-scale model of penstock has been modeled in an ABAQUS, a finite element software package, to simulate the behavior of the finite element model with inner pressure. the von Misses stress distribution will be investigated in two steps; the first load-unload (FL-UNL) and the second load- unload (SL-UNL), and focus on where the yielding initiates and spreads [1]. This model has been sketched as the experimental model of the penstock, Figure 1, except that the third segment of cylindrical mantle of the experimental model has been left out, because the effect of size of the geometrical model on the run time of finite element analysis. On the other hand, this part of the experimental model is not important and could be negligible.