Modeling Half-Car Suspension in Simulink/Simscape?

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Agustin Bernier-Vega
Agustin Bernier-Vega on 9 Sep 2020
Commented: arvind j on 7 Apr 2021
How would I go about building the automobile below as a Simscape or Simulink diagram? The system should be simulated with the below numerical values, while F1 and F2 are to be chosen suitably to represent the road conditions.
I understand more or less how to model the individual spring-mass-damper systems in Simscape (simscape is easier for me to understand than Simulink), but the part I don't know how to implement is mostly the car body itself (which I'm assuming is a rotational mass) with its given lengths (l1 and l2) and the given mass moment of inertia.
Any help you could provide me with is much appreciated!!
  1 Comment
Brandon Ericsson
Brandon Ericsson on 3 Dec 2020
Hello, the answer to your query is important. It is interesting about automobile c2 and k2, given M. Here is something to consider:
m1/m2 * k2/c2, M.
(where h approaches 1.32, where:
i=5, or i=3
hypotenuse).
There are reasons the front/Frictional force is adjusted for h and z. If
z dot, then front integrator (the receiver of the front suspension brakes),
has a greater chance to translate i).
Have a nice day, and it is nice to meet you.
Brandon M. Ericsson

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Answers (2)

Juan Sagarduy
Juan Sagarduy on 23 Oct 2020
Hello Agustin
I think that you’ll find inspiration in the Lever block in the Simscape Foundation Library, possibly by complementing the equations in the source code.
Good luck Juan (MathWorks)

Juan Sagarduy
Juan Sagarduy on 3 Dec 2020
Hi there
I managed to put together the model you describe graphically. It is easy to build with Foundation Library components. Let me know if this is what you had in mind.
Regards / Juan
  1 Comment
arvind j
arvind j on 7 Apr 2021
Hi, can you show the code to modify the lever through which we can add front and rear sprung masses and find pitch angle.
Thank you

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