While TA-ing ME321 - Analysis for design (Duke Junior design), I had the opportunity to devise some FEA and CFD assignments for the students. One of these assignments was to design a bridge to support a pipe across a river -- the higher the efficiency the better. The best student design was pretty good (see right) but I wanted to see if I could do better. In order to do so, I resorted to "cheating" and made the computer solve it for me. :) This generative design bridge beat all student design efficiencies by 5 times and took no design time on my end!
The top images are the staring shape and the best student design. The bottom images are the different design iterations showing the shape optimization over 57 iterations with green being the desired stress and blue being below desired stress. (2019) |
To learn more about and help teach body contacts and constraints I modeled, simulated, and animated this simple independent suspension. Despite its few parts, this suspension system features moving joints and linkages making it quite difficult to accurately model. This design may eventually find a place on my ground prototyping vehicle... (2020)
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During my sophomore year, as part of a group in EGR190 - Special Topics in Engineering, I helped design, build, simulate, and fly a J-motor rocket with an atmospheric and avionic payload. The rocket was designed for maximum stability and altitude. It carried a 10-DOF gyro, short-wave radio, 3D GPS, and sensors for UV, temperature, relative humidity, and differential pressure. The rocket was programmed in Arduino. Post-flight data was integrated to obtain position and velocity and compare against the differential pressure sensor to assure accurate velocity and position readings. (2017)
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As part of a freshman design class group-project, my engineering team was posed the challenge of retrieving a ball at the furthest distance possible with only one initiation action and without electronics.
We designed a catapult that launched a tow-bar which would be pulled back by mousetraps when it triggered the retrieval system at full extension. The design was one of the most successful in class. (2017) |
The viewer will see a lot of wood on this slightly wonky webpage and there are several reasons for that: wood is easy to shape, it is very strong for its weight, and it is recyclable. Depicted is a bridge I designed which placed 7th in a state tournament; it held greater than 2000 times its own weight. Balsa wood projects such as these were where my scientific woodworking began, but not where it ended. (2015)
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External Links:
Capillary Bioreactor (DARPA)
https://make.duke.edu/web/dms107/projects/capillary-bioreactor-v2
Cannular Padding
https://make.duke.edu/web/dms107/projects/oxygen-tubing-padding
PCB Milling
https://make.duke.edu/web/dms107/projects/pcb-milling-and-printing
Textural Mapping (Bass Connections)
https://make.duke.edu/web/dms107/projects/textural-maps
Fly Microscopy (Kiehart Lab)
https://make.duke.edu/web/dms107/projects/fly-microscopy
Ultrasound Laptop Stand (Duke Pediatric Cardiology)
https://make.duke.edu/web/dms107/projects/pediatric-cardiology-laptop-stand
Engineering Teaching Tools (Duke MEMS)
TO BE DOCUMENTED:
Solar Plane V1
SWL/LL
Capillary Bioreactor (DARPA)
https://make.duke.edu/web/dms107/projects/capillary-bioreactor-v2
Cannular Padding
https://make.duke.edu/web/dms107/projects/oxygen-tubing-padding
PCB Milling
https://make.duke.edu/web/dms107/projects/pcb-milling-and-printing
Textural Mapping (Bass Connections)
https://make.duke.edu/web/dms107/projects/textural-maps
Fly Microscopy (Kiehart Lab)
https://make.duke.edu/web/dms107/projects/fly-microscopy
Ultrasound Laptop Stand (Duke Pediatric Cardiology)
https://make.duke.edu/web/dms107/projects/pediatric-cardiology-laptop-stand
Engineering Teaching Tools (Duke MEMS)
- Balance Prop - https://sites.duke.edu/memscapstone/dominicks-page/balanceprop/
- Computer Vison Balance Table - https://sites.duke.edu/memscapstone/dominicks-page/balancetable/
- 3D Printed Mini Autonomous Drone - https://sites.duke.edu/memscapstone/3d-printed-mini-autonomous-drone/
TO BE DOCUMENTED:
Solar Plane V1
SWL/LL