Rigid mechanical system
You have seen how the solver settings can affect the simulation process – its speed and result.
This example presents a model of a rigid mechanical system using a variable-pitch solver.
This rigid system includes two oscillating masses, each with a different calculation step. The picture below shows the system itself.
The following shows the solver settings.
Now let's move on to running the model and analyzing the results. To do this, we will need to declare an auxiliary function.
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# Enabling the auxiliary model launch function.
function run_model( name_model)
Path = (@__DIR__) * "/" * name_model * ".engee"
if name_model in [m.name for m in engee.get_all_models()] # Checking the condition for loading a model into the kernel
model = engee.open( name_model ) # Open the model
model_output = engee.run( model, verbose=true ); # Launch the model
else
model = engee.load( Path, force=true ) # Upload a model
model_output = engee.run( model, verbose=true ); # Launch the model
engee.close( name_model, force=true ); # Close the model
end
sleep(5)
return model_output
end
run_model("stiffMechanicalSystem") # Launching the model.
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Let's build the resulting graph.
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Body1 = collect(Body1);
Body2 = collect(Body2);
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gr()
plot(Body1.value, label = "The first body")
plot!(Body2.value, label = "The second body")
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Conclusion
As we can see on the graph, the second body is at rest, while the first body makes oscillatory movements.