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This document provides an in-depth analysis of shock absorbers, exploring key concepts in mechanical circuits and free body diagrams. It covers the formulation of mathematical models using second-order differential equations and Laplace transforms, leading to the development of transfer functions and state-space models. The content includes detailed diagrams and definitions of state variables for understanding the dynamics of the shock absorber system. Ultimately, it serves as a comprehensive resource for engineers and researchers in the field of mechanical systems.
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Meq KS/2 B KS/2 KW MW Shockabsorber
Meq xM MW xC x0 Mechanical circuit: K B 2 Nodes KW Input Shockabsorber
xC fK fB fMeq Free body diagrams:NODE1 Shockabsorber
fK fB xW fKw fMw Free body diagrams:NODE2 Shockabsorber
Mathematical Model Two 2nd order DE’s in two unknowns Shockabsorber
Laplace transform Shockabsorber
Laplace transform Shockabsorber
Transfer Fn x0→ xC Shockabsorber
Transfer Fn x0→ xW Shockabsorber
State-Space Model Define state variables: Standard choice Shockabsorber
Dynamics Shockabsorber
Output Shockabsorber
Block Diagram Shockabsorber