ADAMS/Hydraulics  

Auto-plugin capability

The new Plugin Manager that was added for the 2003 release impacts how ADAMS/Hydraulics is loaded. The Plugin Manager allows you to select all of the plugins you want to load or unload at one time. You have the choice of loading plugins for just a single session or every time, automatically, at startup. The Plugin Manager is accessed from the Tools menu.

See the What's New for ADAMS/View or ADAMS/Car for additional details.

XML Results File (XRF) is the standard format for storing simulation results

The new standard format for storing ADAMS/Hydraulics is the XML Results File (XRF). This allows greater flexibility for choosing what information you want to store for analysis. One benefit of this new implementation is a majority of the simulations generate a smaller results file with the .xrf when compared to the traditional results file (.res).

Two new components have been added: Gas Charged Accumulator and Spoolvalve4w3p.

• There is a chamber of ideal or real gas inside, which is compressed by the entering flow of fluid.

• Its internal effective volume is completely occupied by gas at the setting pressure and temperature.

• Internal delays and inertial forces can be neglected.

• Compressibility of gas dominates that of fluid (fluid inside an accumulator is treated as incompressible).

• Fluid flows into an accumulator through a fixed-sized orifice.

This component replaces the original accumulator component. The original component is still available to ensure upward compatibility, but has been removed from the menus. You should stop using the original accumulator component, as it may not be available in future releases of ADAMS/Hydraulics. For more information, please refer to ADAMS/Hydraulics Component Reference in the online help.

Spoolvalve4w3p
ADAMS/Hydraulics assumes that for a spoolvalve4w3p:

• There is no volume inside a valve other than pilot volumes in the
  ends of the spool.

• Flow characteristics are the same for both flow directions.

Pipe models have two new features

Linear or nonlinear wall flexibility
You can now select either linear or nonlinear wall flexibility. The pipe radius expands either linearly or nonlinearly with respect to pressure.

Accessing this new feature:

1. From the Hydraulics menu, select Pipe.

2. Select Flexibility.

3. Choose linear or nonlinear.

4. Enter the material property.

Entrance and exit losses for the pipe ends
The second new feature is the ability to model pressure losses at the ends of the pipe.

Accessing this new feature:

1. From the Hydraulics menu, select Pipe.

2. Enter entrance and loss values for pipe ends.