Simple mass-lever-springs system not solved by Simulink

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Guillermo Gonzalez el 2 de Oct. de 2020

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Comentada: Rohit Pappu el 28 de Oct. de 2020

I have developped a very simple Simulink system with a lever attached to a free mass at C and two springs on A and B. when I apply a Force to single spring, or if a set a initial deformation the system fails to solve the equations.

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Guillermo Gonzalez el 3 de Oct. de 2020

Uncompressed_stability_physical.slx

Here it is. One has a force acting in only one spring. The other one has just a initial condition of deformation in only one of the springs.

Thanks for your help.

Rohit Pappu el 28 de Oct. de 2020

Have you tried using a Stiff solver like ode15s or ode23t ?

This was the result upon using a stiff solver like ode15s

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