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Dynamic Modeling and Transfer Function Analysis of Quarter-Car Suspension System

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Andrew Connor

OVERVIEW

Developed a dynamic model of a quarter-car suspension system to analyze vehicle response to road disturbances. The system was modeled using second-order differential equations representing sprung and unsprung masses, suspension stiffness, and damping characteristics. Derived the transfer function relating road input displacement to vehicle body response and implemented the model in MATLAB to evaluate time-domain and frequency-domain behavior. Simulated road bump inputs to assess transient response, damping effectiveness, and system stability.

HighlightS

  • Formulated equations of motion using Newtonian dynamics



  • Derived transfer function representation of the suspension system



  • Modeled road bump input as step and impulse disturbances



  • Evaluated system response using step response and time-history plots



  • Analyzed overshoot, settling time, and damping ratio effects



  • Compared parameter variations (stiffness and damping) on ride performance

SKILLS

Dynamic System ModelingTransfer Function DerivationLaplace Transform MethodsMATLAB SimulationTime-Domain Response AnalysisFrequency Response AnalysisSecond-Order System AnalysisStability EvaluationControl System FundamentalsMechanical System Dynamics

ADDITIONAL CONTENTS


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Andrew Connor

Aerospace Engineering Student at University of Central Florida

I am an Aerospace Engineering student at UCF with experience applying engineering fundamentals to real-world systems through manufacturing and quality engineering internships at Conti Federal Services and Adjuvo Technologies. My work has required detailed interpretation of engineering drawings, configuration control, and technical documentation within complex, regulated environments.


I am particularly interested in Guidance, Navigation, and Control, propulsion, and R&D-focused roles where analytical modeling and system-level thinking are critical. I have experience using MATLAB for dynamic system analysis, SolidWorks for CAD and basic FEA, and applying thermodynamics and fluid mechanics principles to engineering problems. Through leadership experience and managing teams, I have developed the ability to translate engineering requirements into executable technical solutions while maintaining precision and accountability.


(Note: All figures and technical materials shown are my own work)