Albert Choi ePortfolio

Shown to the left is the certification for Albert Choi as a SolidWorks Associate in Mechanical Design.

Speed Bump Power Generator

This speed bump uses a rack and pinion and Pelton wheel to generate power when a vehicle runs over the bump. The speed bump has 63 different parts that were modelled in SolidWorks. Static analysis, stress analysis, fluid analysis, and fatigue life analysis were conducted. This idea would allow for street lamps and other energy using devices to be powered in an area without needed external power.

Pelton Exploded

The Pelton Wheel used water pressure from the damper to spin the Pelton wheel in the container. This rotation turned the bevel gear which would turn a generator creating usable energy.

Front View

The system uses three coil springs and four dampeners to absorb the force of the vehicles going over the speed bump. The rack will be stationary under the plates of the speed bump, while the planetary gears will move with the displacement of the speed bump. Simultaneously, the force of the vehicle will displace a piston from the hydraulic setup which pushes the liquid into the Pelton wheel.

Four Cylinder Engine

This simple engine system assembly consists of parts including the crankshaft, piston, piston ring, connecting rod, pin, and conneting rod cap. A motor was applied to the crankshaft at 50 RPM to create the simulated movement.

Exploded View

Jet Engine

The Jet engine was created using a propeller, shaft, and housing cover. The assembly involved mating the propeller and shaft together and making sure the housing cover fit the diameter of the propellers.

Transparent View

Exploded View

Belt Drive

This belt drive was assembled with the following parts made:

-Pulley

-Bracket

-Shaft

-Bushing

-Woodruff Key

-Spur Gear

-Hex Bolt

-Hex Jam Nut

This drone assembly consists of the drone body, battery, propellers, and propellor guards. The propellors and battery were provided, so the objective was to create a drone body and propellor protectors with the constraints of the propellors must be in a square of length 400 millimeters. The drone body was created and detailed, and then an assembly was created using coincident and concentric constraints. Finally, the propellor protectors were created and added to the assembly as well.

To the left is a glasses holder I created for a classmate since he was tired of leaving his glasses on the table. This design was created using and extrude boss, loft, and extruded cut. The nose feature of the holder was created by making a plane parallel to the lofted structure and a sketch was projected and wrapped onto the base. Overall, the print came out pretty well, it had got shifted at the bottom a bit but still serves its purpose of a glasses holder.

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