Design new perfect car
How it will behave?
Is the suspension OK?
Design its geometry and parameters. Then, you can design several simulation experiments. First, the car will fall from above the road. You will be able to observe how the suspension reacts and how it stabilizes over the road. Two more experiments are inserted automatically: the initial acceleration and the final breaking.
|You can add ten
more simulation experiments in one program run.
They consist in the given road shape, which can be edited. Edit the ramp,
vibrator or any other obstacle (road shape) for the right and left side of
the road. The experiments can also include a curve.
Then, the simulation follows. The car is placed (falls) on the road, then
accelerates to a given maximal velocity, goes through the obstacles you have
edited and finally stops. The simulation is shown as an animated 3D car and
road image. On a fast machine (PC, about 2GHz), the movement is nearly as in
the real time. Anyway, the current model time is indicated on the screen, so
you can assess the real time model behavior.
The main purpose of the
simulation is to analyze the car and suspension movement,
to visualize the
dynamic behavior over given
obstacles and curves and to see the corresponding parameters plotted as
functions of time. This is a basic simulation where only the independent
suspension system is considered. No sophisticated special features like hydrolastic,
hudrogas or hydropneumatic suspension are
supported. Note that we can provide modeling tools for such systems as
The forces can also bee seen on-line during the simulation. In this case only the wheels are shown, and the forces appear as moving 3D arrows, as shown below.
|The shape of the
car is user-defined. The CarDyns program accepts the STL ASCII files to
display the car body. So, you can edit the car shape using any CAD/CAM tool
that can export the STL files, or get the file from any other source. The
above images have been generated using a default STL file, provided with the
The simulation was coded in the PSM++ simulation language, using the pre-defined PSM++ rigid body process.
Platform: PC, Windows 2000, XP, NT.
DEMO : (zip file, about 0.8 MB). The main program is cardyndef.exe.
PSM++ simulation language (new version of PASION)
Click here to buy the package. The price is US $ 69You are visitor no. since March 20, 2007