Unformatted text preview: MECH 7970-009: Multi-physics
Department of Mechanical Engineering
Auburn University About this Course and Lecture
• I want everyone to do well, but everyone must
• prove that they have earned it.
I grade on the knowledge you have retained (it
does not matter how hard you worked).
This is important, especially if you become a
practicing engineer (as I will show later). The Auburn Creed
I believe that this is a practical world and that I can count only on what I
earn. Therefore, I believe in work, hard work.
I believe in education, which gives me the knowledge to work wisely and
trains my mind and my hands to work skillfully.
I believe in honesty and truthfulness, without which I cannot win the
respect and confidence of my fellow men.
I believe in a sound mind, in a sound body and a spirit that is not afraid, and in clean
sports that develop these qualities.
I believe in obedience to law because it protects the rights of all.
I believe in the human touch, which cultivates sympathy with my fellow men and
mutual helpfulness and brings happiness for all.
I believe in my Country, because it is a land of freedom and because it is my own
home, and that I can best serve that country by "doing justly, loving mercy, and
walking humbly with my God."
And because Auburn men and women believe in these things, I believe in Auburn and
-George Petrie (1945) The Last Lecture by the Late Randy
• Full Version at Carnegie Mellon
• Or read the book- it’s short.
• Key Points: – Never Give up.
– Don’t complain, work harder.
– You’ve got to get the fundamentals down, because
otherwise the fancy stuff is not going to work.
– If something seems hard, remember that it could
always be worse. Prof. Pausch’s father was fighting
the Germans at his age when he was in college.
– Time management: Randy Pausch Too many distractions
• Rule of thumb is to study for 3 hours for every hour of
• class. Only counts if you are actually studying!
Turn it off.
I’ve seen students study for hours but actually cover
material for a few minutes.
Instant Messenger: Turn it off.
Cell Phone: Turn it off.
IPod: Turn it off.
Also, come to class. I may add
information to material that is not
in the book. Do Not Waste Time
Do • When you plan to visit a waiting room, bring
• something to work on rather than reading the
In between classes is a good time to study. Sleep
• Make sure you get enough sleep, especially before an
• exam or final.
This means that you CANNOT put off studying until the
last minute. It will backfire.
You must keep up with the class while it is going on.
One of my best friends used to study overnight before
every exam. I would bring him breakfast (also
important). Guess who did better? Balance
• It is important to have fun
• and to maintain balance with
other parts of your life.
The key is efficiency,
prioritizing and balance.
Many times the best students
in my classes are those with
families. They should have
much less time (believe me
they do), but they are much
better at time management
and prioritizing. Cheating and Plagiarism
• Cheating is unacceptable and it will only hurt you in the long run.
• I have caught people and I will take
• Plagiarism: to steal and pass off (the ideas
or words of another) as one's own : use
(another's production) without crediting
the source. Why Multiphysics?
• Multiphysics modeling is • needed because the
world is multiphysical in
Everything is governed by
all the physical
mechanisms that we have
observed and they are
seemlessly. Multiphysics Modeling
• Solid and Fluid Mechanics, Thermal, Electrical, Magnetic, Gravitational,
Molecular Scale Phenomena
• All these fields are linked or coupled
together, usually through boundary
conditions or field conditions.
• Sometimes called multi-field modeling. Examples
ics/default.asp • Several commercial software packages now incorporate multiphysics. We will use
ANSYS in the course, although Comsol is
also well known in this area. Good Luck!
Good Luck is what happens when preparation meets opportunity
– Seneca 1st century AD ...
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- Spring '08
- Mechanical Engineering, Multiphysics, Prof. Pausch, multiphysics modeling