Assign Dynamic Stiffness and Damping to variables

I have designed a simple Spring Mass System with a spring and damper.

The spring has variable stiffness and damper has variable damping. I have the graph for Spring Force vs Displacement and Damper force vs Velocity.

However the stiffness and velocity depends on the displacement and velocity of the mass. Thus I need to create a feedback and update the value of stiffness and dampling depending on the mass displacement and take values dynamically from the graph.

Can anyone suggest a method to dynamically update values of stiffness and damping?

Answer 1

[Siddharth Jawahar]

Hi Sarnab, Have you tried using the look up table block to do this?

https://www.mathworks.com/help/simulink/slref/ndlookuptable.html?s_tid=srchtitle

https://www.mathworks.com/help/simulink/ug/guidelines-for-choosing-a-lookup-table.html?s_tid=srchtitle

Best,

Sid