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I'm sure I must be being a bit dim here, but I can't work this out!

I have a mass-spring-damper system, as shown in the attahed picture, in which i have a mass suspended between two springs and dampers, each of which are attached to a fixed surface. he two opposite surfaces are part of the same fixed mass (i.e. the whole thing is inside a rigid box).

I know that a normal system with a single spring and damper can be expressed (in the Laplace domain) as

k / (k + Cs + ms^2)

But I can't work out how to modify the equation to include the mass and spring on the other side!

Any advice would be most welcome!

Thanks,

Andrew

I have a mass-spring-damper system, as shown in the attahed picture, in which i have a mass suspended between two springs and dampers, each of which are attached to a fixed surface. he two opposite surfaces are part of the same fixed mass (i.e. the whole thing is inside a rigid box).

I know that a normal system with a single spring and damper can be expressed (in the Laplace domain) as

k / (k + Cs + ms^2)

But I can't work out how to modify the equation to include the mass and spring on the other side!

Any advice would be most welcome!

Thanks,

Andrew