Jamie Young
mechanical engineering portfolio
delta robot 14-17
bumblebee 6-9
P-51B plane 10-11
wind turbine 12-13
CalSol 4-5
about me
I am in the five year MS/BS program at UC Berkeley and will be graduating May 2012 with an MS in mechanical engineering.
I worked at Pratt and Whitney Rocketdyne as a mechanical design intern on small propulsion systems for two consecutive
summers. I recently finished a semester working as a graduate student instructor teaching 3D modeling and animation using
PTC Creo Parametric and 3D Studio Max. My interests include mechanical design, 3D modeling and animation. My hobbies
include ceramics, knitting, crocheting, and paper crafting.
pencil sharpener 18-19
finite element method 22-23
CONTACT INFORMATION
Jamie Young
jamieyoung@berkeley.edu
818-448-3812
ceramic business-dog 24-25
tech talk 20-21
ceramic astronaut 26-27
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3
CFD Analysis Performed computational fluid dynamics
simulations on surface models using FloWorks. Compared
CalSol vehicle shells
CFD simulations
coefficient of drag and aerodynamic efficiency between models.
software
SolidWorks
FloWorks
CalSol - Solar Vehicle Team
Fall 2008 - Spring 2009
CalSol Team
Team Photo (taken Spring 2009) with the Gold Rush vehicle.
Modeling Created 3D surface models in
SolidWorks of solar car shell designs. Models
met outer surface area requirements to fit
minimum number of solar cells on shell surface. Worked with other sub-system teams
to determine internal volume requirements to
enclose vehicle components.
4
Bubble Canopy
Integrated Canopy
CFD results for a bubble canopy model. The canopy
CFD results of an integrated canopy model with flat shell body sides.
shape results in more drag but is easier to fabricate.
Highest amount of drag present on the vehicle’s leading edge
5
bumblebee the transformer
3D model & animation
Advanced Engineering Graphics (E128)
Spring 2010 with Professor Lieu
Modeling Reverse engineered Bumblebee the Transformer from an action figure toy. Collaborated
software
with a team of four over three months to model and assemble the eighty components. Personally
Pro/Engineer Wildfire
modeled twenty individual leg components from the hip to the toes.
3D Studio Max
Assembly Components assembled with translational and rotational constraints on each joint.
Inverse kinematics tools were used to simulate the robotic motion of the transformer.
Earned the Alexander and Ethel Levens
Award for excellence in engineering
graphics, computer aided design, 3D
modeling and animation
Toy Bumblebee
This action figure toy model was
reverse engineered and modeled for
a 3D animation.
6
Leg Assembly
Individually modeled components from
the hip to the toes. Dimensions measured
using calipers.
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project goals
technical communication
illustrate assembly & operation
Animation Rendered a 10 - minute animation with multiple scenes and transitions.
Animated the assembly of the eighty components and transformation from robot to
automobile. Included sound track, lighting, and special effects. Wrote an entertaining
storyboard with Bumblebee dancing after the final credits.
3D modeling
animation
special effects & lighting
rendering
sound track
scene transitions
Team Members:
Azhar Meyer
Andy Hoac
Srikanth Kondragunta
Assembly
The components were assembled
into sub-assemblies and then a
final full assembly.
8
9
P-51B
plane model
Surface Model Created a 3D surface model of a
vintage P-51B Mustang plane in 3D Studio Max.
Applied surface material finishes and insignia details
created in Photoshop. Rendered a short animation
of the plane flying over Berkeley campus. Individual
project =pleted over the course of three weeks.
software
3D Studio Max
Photoshop
Advanced Engineering Graphics (E128)
Spring 2010 with Professor Lieu
Animation Used keys and motion controllers to generate the
flying path of the plane. Created an illusion of spinning propellers
by using a glass disk. Also generated an illusion of a 3D campus
by mapping a 2D photo onto the inside surface of a 3D sphere.
Front
Side
Top
Animation
Computer model compared to images and toy
Fuselage created with a loft and sketches of
Multiple vintage decals added using alpha-maps
Rendered an animation of the plane model flying an inside loop
model for accuracy of proportions and scale.
multiple cross sections along the body.
for transparency. Plane wings modeled using a
over campus with a 3D environment and lighting effects.
deformation fit.
10
11
wind turbine design
aerodynamics
software
MATLAB
LaTeX
Computation Calculated bending and twisting mo-
Coding Wrote code in MATLAB to design a windmill
ments on a blade with constant airfoil cross section and
blade. Determined geometric and aerodynamic charac-
varying chord and twist angles. Compared analytical
teristics of blade such as total power and thrust output.
results to real world windmills of similar size.
Individual project completed over the course of one
semester. Compiled results in reports written in LaTeX
about airfoil and turbine blade analysis.
Turbine Blade
3D plots of final turbine blade
design
1
NACA 0012 Pressure Distribution of 141 Vortex Panels,α = 5 degrees
2
NACA 0012 Pressure Distribution of 141 Vortex Panels,
α = 0 degrees
NACA 0012 Pressure Distribution of 141 Vortex Panels,α = −5 degrees
0.5
0.4
0.5
1.5
0.3
1
0.2
0
0.1
Fall 2010 with Professor Savas
−0.1
−1
0
−0.2
−0.3
−1.5
−2
−2
Aerodynamics (ME163)
0.5
0
−0.5
−0.5
−0.4
Negative Angle of Attack
−0.5
−1
−1
−2 1
Stall Angle
Airfoil Cross Section
Symmetrical pressure distribution of a
An angle of attack of 5 degrees results
A cambered airfoil, such as the NACA-4412,
Calculations at degree increments to check if
Pressure distribution of the NREL-S814 airfoil used in the
grees, the resulting lift on the airfoil
NACA-0012 airfoil with 0 angle of at-
in an upward lift. The red areas indicate
has an upward lift when angle of attack is zero
airfoil stalls at the designed angle of attack.
windmill blade design with an angle of attack of 10 degrees.
is downward as represented by the
tack has no resulting lift.
high pressure.
because of the asymmetric airfoil shape.
Airfoil stalls when separation point drops below
−1.5
−1
−0.5
0
With an angle of attack of -5 de-
blue area of low pressure.
12
0.5
1
−0.5
0
Zero Angle
of Attack
0.5
1.5
−1.5
1.5 −1
Positive
Angle−0.5
of
0
Attack
0.5
1
1.5
Asymmetrical
Airfoil
the dotted line value in the plot.
13
Mechatronics (ME102B)
delta robot
parallel robotic arm
Fall 2010 with Professor Kazerooni
Overview Senior design project to prototype a device
software
controlled by an Arduino micro-controller in one semester. Built a parallel robotic arm where the effector end
Arduino
remains parallel to the ground.
MATLAB
Pro Engineer
Kinematics Solved a system of equations
using inverse kinematics to relate the angular
position of the top parallelogram to the position of the effector. Prototyped and tested the
dynamics equations in MATLAB. Compiled
final C++ code using an Arduino micro-controller.
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Motion
Design
Hardware
Prototype
CAD Model
Schematic of links and angular positions to relate
Modeled and drafted all components in Pro/Engineer Wild-
Machined stock material that was ordered from
Hardware was designed for a lightweight and
3D model of delta robot used to plan the
the position of the effector head to the servo input
fire before machining hardware. Check feasibility of design
suppliers. Maintained a bill of materials to manage
simple model that was easy to assemble.
machining and assembly of hardware.
angle at the top.
and range of motion using the CAD model.
project costs and supplies.
15
Software Taking input from the user
through a Wii controller, the micro-controller
interpreted the signal to desired coordinate
in 3D space and translated that location to
a series of output angles on the robotic arm.
operation
Wii Nunchuk
Use an adapted to separate the
output from a Wii Nunchuk controller into four signals to be input into
the micro-controller.
The micro-controller sent corresponding
PWM signals to the 3 servo actuators on
the robot.
Control
Using current location of the robotic
arm, translated the output from the
Wii Nunchuk to a change of position of the robot effector head.
Team Members:
Jennifer Lew
Angelo Del Mundo
Andy Hoac
Azhar Meyer
Electromagnet
Wound wire around a nail to create a solenoid. Button on the Wii
Nunchuk turned current through the
solenoid on or off to control an electromagnet to pick up small metallic
objects.
Design Expo
A simple game to pick up and drop washers for game points was used to
display the delta robot to illustrate the range of motion and responsiveness to user input.
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17
Project Designed and built an automatic pencil sharpener
automatic pencil sharpener
planar machinery
that used a four bar mechanism to move a sharpener into
place to sharpen a rotating pencil. The pencils were fed into
the device and fell through the bottom when finished.
software
Team Members:
MATLAB
Azhar Meyer
Andy Hoac
SolidWorks
Benson Khai
3D Studio Max
3D Model
Created a 3D Model in Pro/Engineer and short animation in 3D
Studio Max illustrating the operation of the device.
Hardware
Assembled hardware
in three portable
segments. Four bar
linkages machined
from stock material
and drawer sliders.
Timing
Brainstorms
Four Bar Linkage
Sketches and calculations made so that the
Drew several ideas and possibilities for
Planar machinery design to convert the rotational motion
rotating pencil was in place at the time that the
mechanisms to receiver pencils from a
from a motor to a one dimensional sliding motion.
sharpener was in an ideal position to sharpen.
hopper and return sharpened pencils.
Planar Machinery (ME130)
Spring 2010 with Professor Yousseffi
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19
tech talk
new product development
New Product Development (ME110)
project goals
Spring 2011 with Professor Agogino
mission statement
Wizard of Oz Prototyping
Using power point slides to prototype onscreen menus and graphics on a tablet.
This prototying method provided users
personas
with the look and feel of a device and
Project Investigated why some elderly are not
stakeholder interviews
creating a functioning prototype.
always comfortable using technology and designed
user needs
a service to address the problem. Tech Talk was de-
generated feedback without the costs of
signed as a simple to use online video chatting and
concept generation
web help service that was accessible with a single
screening & scoring matrices
click of the desktop icon.
lessons learned
Concept Generation
rapid prototyping
Drew many concept ideas to address the problem of elderly having trouble using
computers. Ranked and scored and the benefits and feasibility of the ideas.
I want to learn how to read the news online… I should ask
Tech Talk!!!
00:00:26
00:05:52
Wow! That was easy!
Thanks, Tech Talk!
Hello, Mr. Herpington!
How can I assist you today?
Team Members:
Azhar Meyer
Andy Hoac
Cindy Wang
Vangie Alvarez
Kevin Lau
Problem
Students
Service
Rapid Prototyping
Discovered the need for computer assistance,
Recognized the ability and ease of which
Combined both findings to create Tech Talk
In class rapid prototying of out highest scored concepts from our idea generation phase.
especially among elderly or people who had
students are able to use technology and
where students can help elderly online through
Generated models of the “easy to use” device and menus for computer-aid software.
not grown up using computer technology.
share their knowledge with others.
a screen sharing and video chatting software.
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21
coding
finite element method
Coding Wrote FEM code in MATLAB from scratch to
software
MATLAB
Testing Compared final FEM solutions to analytical solutions of
understand the fundamentals and mathematics of the
differential equations. Used best approximation theorem to evalu-
finite element method. Initially wrote a code to solve a
ate the potential energy of the solution and assess convergence.
1D differential equation solution of a cantilever bar with
Solved simulations for linear, quadratic, and cubic basis functions
linear basis functions progressing to non-linear basis
with varying mesh sizes to find the reasonable combination of com-
functions and then a 2D FEM solver. Also wrote code to
putation time and solution accuracy.
mesh 2D and 3D shape as well as a mesh refinement
scheme for 1D.
Compared code perfomance and mount of post-processing for a conjugate gradient solver versus Gaussian
elimination. Used numerical methods such as Gaussian
integration and Newton’s method to evaluate and solve
the solutions.
Time Dependent Diffusion
Wrote algorithm to solve a time dependent diffusion problem of a 1D bar
with varying reaction coefficients, starting at an initial concentration and
reaction taking place until concentration is zero. The problem was solved
using forward (explicit) and backward (implicit) Euler numerical methods.
Finite Element Method (ME280)
Fall 2011 with Professor Zohdi
2D FEM
2D Meshing
2D Solution
3D Meshing
Tested 2D solver with a uniform mesh and
Code to mesh a 2D arch shape with variable or
Solved a thermal conductivity problem for
Code to mesh a tubular shape with varying number
continuous arch. Enforced edge and flux
uniform meshing with the number of elements in
arch with material discontinuity in the center.
of elements in the radial and angular direction of the
boundary conditions with post processing.
the radial and angular direction as code inputs.
Applied boundary condition using the penalty
cross sections and number of elements along the
method and evaluating surface Jacobian
length of the tube.
values.
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23
Finished
Completed sculpture
Wegman business-dog
ceramic sculpture
after final glaze and
kiln firing. Displayed
Wet Clay
Life-size model originally made
Intro to Ceramics (Practice of Art 14)
oversize to account for shrinkage
Spring 2011 with David Linger
when fired in the kiln.
at the 2011 Dirt
Show at the Worth
Ryder Gallery at UC
Sculpture Modeled life-size human bust and dog head for a
Berkeley
ceramic sculpture inspired by William Wegman’s photography.
Greenware
Inspiration
Bust greenware slowly air dried
William Wegman’s
over a week to avoid cracking and
weimaraner models
fatigue.
featured in Sesame
Street episodes
were the inspiration
for this sculpture.
Underglaze
Layered multiple layers of underglaze to give the coat color depth.
Glazing
Bust with final coat of pigmented
glaze on jacket and hand, and clear
Wet Clay
Underglaze
Fired
Glazing
Dog head sculpture in wet clay before
Greenware sculpture with slip
Head after being fired once with
Completed heat with final coat of pigmented
being air dried.
underglaze before firing.
no glaze applied.
glaze (hand mixed) on the fur areas and clear
glaze on the eyes and nose before the final
24
fire in the kiln.
glaze on shirt and tie.
Sizing
Completed sculpture without glaze. Head and bust modeled separately
as two pieces for structural integrity and ease of firing and glazing.
25
Finished
Applied clear glaze to all sculpture components. Completed the piece with
astronaut walking dogs
ceramic sculpture
wire leashes to simulate the astronaut walking the dogs while on display.
Inspiration Sculpted an astronaut walking dogs based on a childhood dream to grow
up to be an astronaut and lifetime affinity for canines. Considered several sculpture
variations such as including a moon surface or various model scale and sizes.
Intro to Ceramics (Practice of Art 14)
Spring 2011 with David Linger
3d cad models
Individually modeled components based on
plastic injection molded parts. Dimensions
measured using calipers and
Wet Clay
Greenware
One foot tall sculpture in progress. Dried model with underglaze before
firing. Body not underglazed to
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show natural clay white color after
firing
Firing
Big Picture
Dogs
Body
Legs
Top
Fired sculpture before final coat of
Sizing the dogs with astronaut for appropriate scale.
Dog models simplified as only silhouettes to keep the
Body construction using
Sturdy bottom half to sup-
Created separate pieces
focus on the astronaut details. Hallowed for rapid drying.
slabs for a lightweight
port the bulky top half of the
and joined after partial
top half.
astronaut.
drying.
clear glaze was applied.
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