Why do my calculations not match up with the simulation results?

Hello,

For one of my university project we are tasked with designing a suspension system. Using hand calculations I have worked out that the maximum displacement of the mass should be 19.5mm when the spring stiffness is 54772.5N/m and the damping ratio is 3462.78N/(m/s). However, when I am modelling this system on simscape I get a displacement of around 200mm. I am new to using this software so suggestions as to where I'm going wrong would be great.

Below is the setup I'm trying to model where v=13.33m/s , go=0.015m and d=5m

This is the setup I've been using on simscape

[Ameer Hamza]

There is a difference by about a factor of 10 in your hand calculation and the simscape output. Are you sure that there is no mistake in hand calculations? Also, make sure that the units are correct when you input the parameters in simscape blocks, and the amplitude of pulse and disturbance is the same as you used in your calculations.