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MultiphysicsLecture1 - MECH 7970-009 Multi-physics MECH...

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Unformatted text preview: MECH 7970-009: Multi-physics MECH Modeling Lecture #1 Robert Jackson Department of Mechanical Engineering Auburn University About this Course and Lecture About • 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 The 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 believe 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 love it. -George Petrie (1945) The Last Lecture by the Late Randy The Pausch • 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 Too • 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 magazines. In between classes is a good time to study. Sleep 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 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 • Cheating is unacceptable and it will only hurt you in the long run. • I have caught people and I will take action. • 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? Why • Multiphysics modeling is • needed because the world is multiphysical in nature. Everything is governed by all the physical mechanisms that we have observed and they are linked together seemlessly. Multiphysics Modeling Multiphysics • 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 Examples • http://www.comsol.com/showroom/ • http://www.ansys.com/products/multiphys 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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