Introduction and Contributions Screw Motion Stage Egg Gripper Energy Harvester Pencil Launcer MATLAB Code

Design and analysis compliant mechanism

This page presents a summary of my projects for 2.145 Design of Compliant Mechanisms over Fall 2024.

In this class, I learned to use techniques in design for compliant mechanisms such as Freedom and Constraint Topology (FACT) to design constraints for certain degrees of freedom, using stiffness matrices for analyzing parameters like force, energy, stiffness, and sensitivity, as well as Psuedo-Rigid Body Modeling (PRBM) to model large deformation of beams.

Here are my specific contributions to these group projects:

  • Screw Motion: fabrication, modeling range of motion for specific load, and theta x stiffness
  • Egg Gripper: modeling stiffness, energy, force applied, force exerted, and sensitivity using MATLAB
  • Energy Harvester: CAD model, computing stiffness matrix, and symbolically solving specific stiffness
  • Pencil Launcer: modeling stiffness, energy, force applied, force exerted, and sensitivity using MATLAB

Screw Motion Stage

Figure: Screw Motion Stage Requirements


Figure: Screw motion stage fabrication and testing for torque displacement coupling


Figure: Screw motion stage CAD model


Figure: Screw motion stage report


Egg Gripper

Figure: Egg gripper requirements


Figure: Using Fusin 360 FEA features to test egg gripper


Figure: Testing gripper performance and effects of additional G forces from motion


Figure: Egg gripper report


Energy Harvester

Figure: Energy harvester requirements


Figure: Parametric CAD model


Figure: Energy harvester report


Pencil Launcher

Figure: Pencil launcer requirements


Figure: Launcher CAD model and fabrication


Figure: Testing Launcher performance


Figure: Pencil launcher report


MATLAB Code

Egg Gripper Code

Energy Harvester Code

Pencil Launcher Code