4. Marine-life-friendly boat propulsion system (Assignment #1)
4.1 Methodology used to derive skeleton model
- Inspiration: The design was inspired by the natural arm motion of a turtle. A reference image of a turtle was overlaid onto Math Illustration to study its movement.
- Initial Iteration: A mechanical linkage system was constructed to replicate the turtle’s arm motion. This is the baseline for evaluating motion accuracy.
- Refinement: The dimensions of each linkage segment were adjusted to better approximate the kinematics of the turtle’s arm.
3. Mechanism Synthesis – Translation (Sep 10)
Top: Two position synthesis
Middle: Ship door mechanism
How to design
- Construct the perpendicular bisector of the segment joining the two positions of one endpoint of the line as it translates.
- Repeat this process for the other endpoint of the line.
- The intersection of the two bisectors defines the center of rotation of the mechanism.
- Using this center, design a rocker mechanism so that the line oscillates between its two positions within the specified range.
2. Mechanism Design using Math Illustration (Sep 8)
Top: Planar pin-jointed mechanism
Middle: Slider-crank mechanism
Bottom: Rocker Motion
How to design
- A base image was imported into the software and set to 80% transparency.
- Reference lines were traced over the image, and their lengths were constrained.
- The moving component was assigned a variable.
- The motion was demonstrated by varying the parameter across its full range.
1. Four Bar Mechanism Tutorial
Analysis was conducted:
Coming soon