ABSTRACT

The results of the simulation can be shown in Figure 3. and Figure 4. The Figure 3. results from the simulation for an implicit state equation with operating parameters as EPS= 10-8, HMAX= 10-2, HMIN= 10-8, And the Figure 4 results from the simulation for an explicit state equation with the same operating parameters mentioned above. The model of the relief valve in the explicit state equations is:

The simulated time is set up in the range of [0, 0.1], The run time is 480 sec. for explicit state equations and 38 minutes for implicit state equations, while using the COMPAQ-286 personal computer with 80287. So, the cost for replacing an explicit state equation with an implicit state equation is to increase run time in computer when the Regional Stiffness Detection Method is involved even though the implicit state equation

makes modeling much easier.