Chris Frewin
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Home Page | Beijing | Nanjing | Meet the Students
Caleb Koch | Alison Hamlin | Chris Frewin |
Megan Watkins | Marc Scimonelli
| Tom Lee
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Hometown: Burnt
Hills, New York
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College: Clarkson University; 2014
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Major: Mechanical Engineering; Physics
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Interests: Skiing, Hiking; Drawing; Music; Playing
guitar; Soccer
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Favorite Chinese Food: Roast Duck, Fish, Egg & Vegetable
Dumplings
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What I missed most about the U.S.: Dairy Products; my guitar!; the woods
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What I will miss most about China: The research, the Chinese Students at the lab, the
cheap everything, the green apple soda, the green tea flavored cookies, blueberry
gum, and interesting ice cream flavors.
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Research Project Abstract:
Effect
of repeated same-point, same-velocity collisions (15 repeated collisions)
on the coefficient of restitution (
)
for tin, iron, and 304 grade steel is studied using high-speed video analysis. For repeated collisions, results reflect
that as yield stress of a material increase, collisions are more elastic ( closer to 1), energy lost from deformation in
the initial collision is less, and less collisions are required for to
reach a limiting value (the elastic regime). The effect of impact velocity
(
) on the coefficient of restitution for
repeated same-point impact is studied with ball-ball collisions of 304 grade
steel balls in a velocity range of 0.2 m/s to 1.0 m/s. Experimental results
in this velocity range show that the relation between the restitution coefficient
and impact velocity are nearly linear, recovering from other experiments done
in the same velocity range with the same material. Energy analysis on each
of the impact velocities reveals that both plastic deformation regimes and
elastic regimes are a function of impact velocity and material properties.
Repeated impact theories, specifically for the elastic regime are discussed
for improvement. Differences and limitations of velocity dependence in two
contact models are explored.
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Favorite
Story
I knew all about the bartering system. I was ready to get those Nike
knock-offs I
had been bragging to everyone else about on how cheap I would get them.
We were on the first floor. The silk market is full of small, side-by-side kiosks, all shelves stacked
with products. Following the beckoning of one of the vendors, I walked into
the small cramped kiosk which had some nice-looking Nikes.
The first pair of shoes that looked mildly good to me I began to try
on. They fit pretty good, so the guy started asking
me how much I wanted for them, offering me a calculator as is the usual in
these types of haggling/bartering markets. I just arbitrarily typed in 150
RMB (about 25 dollars). In reality, I had no intentions of buying the shoes,
I was simply looking. He responded with a laugh to my price and showed me
450 by saying “good price, good American friend price!” (They really like
to make ‘friends’ with you) He typed in 700 RMB while saying, “American seller
offer you this price, I offer you this price!”, again then showing the 450
RMB on the calculator. I waved him off and tried to say no, but he offered
his calculator again with 400. I began to attempt escaping, and that’s when
things got interesting…
This
guy wouldn’t let up on his deal. He grabbed my wrist in attempt to keep me
in his small kiosk. He quickly lowered the price to 350. Still I was not interested.
I wanted to look around more in the massive market!
He
was getting loud too, offering lower and lower prices. “Three
hundred! Two eighty!” he shouted in his accented voice. All this time
too, he had a vice grip on my wrist.
I
managed to step out of the kiosk, but he began saying very funny things. He
was getting desperate: “Two hundred! You tried them on!” – we
were walking through the corridor – “What’s wrong with you? You
stupid?!”
Finally,
he quit shouting, and we continued our adventure through the Silk Market
And
that is the story of how I failed miserably at the silk market. But there
are things to be learned from this story! Once you get used to it, haggling
is actually very fun, and you can get really great deals (Like getting two
t-shirts for 40 Yuan). Just don’t give in! Don’t feel bad for getting things
for very low prices!
So,
it’s fine to go into a kiosk, but just make sure you look as though you are
looking very generally. If they offer any prices, make no response,
just wave your hand off. It usually works. Don’t try anything on like me,
unless you really know you are going to buy it! As soon as you try anything
on or start looking at a specific thing in more detail, they may start haggling.
Finally,
remember you can always walk away, even if they are shouting and yelling.
Remember, they’re having just as much fun as you are. Enjoy the markets though,
there are few places in the world with such commercialized items and such
cheap prices.