ME_3504_week1_professor

ME_3504_week1_professor - Dynamic Systems Vibrations ME...

Info iconThis preview shows pages 1–14. Sign up to view the full content.

View Full Document Right Arrow Icon
1 ME 3504 : Week 1 Dynamic Systems - Vibrations ME 3504 Michael Roan [email protected]
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 ME 3504 : Week 1 Course Policy: ME 3504 Grades will be based on a numerical average calculated with the following weightings: Two in-class tests = 50% Final Examination = 25% Weekly homework and in-class quizzes = 25% Tests will be given on the dates indicated. Makeup tests will not be given except in special cases. If you have to miss a test you should contact me before the test date. Homework will be due as indicated. Students will be allowed to drop one homework grade.
Background image of page 2
3 ME 3504 : Week 1 Course Policy: ME 3504 Text: Engineering Vibration , 2nd Edition, D. J. Inman, Prentice Hall, 2001 Computer Code: You will be required to use the Student Edition of MATLAB to solve Homework Problems.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4 ME 3504 : Week 1 Marking Dispute Policy The Insurance File 1. On a cover page that includes your name and the date, briefly describe the injustice or complaint. 2. Also on the cover page, state the exact number of points that you feel that should be added back to your score. 3. Resubmit the entire original work. Since I will keep this please make a photocopy for your records and for later studying.
Background image of page 4
5 ME 3504 : Week 1 Help sessions rather than office hours Office hours are by appointment. E-Mail is the best way to have questions answered. Don’t wait till the last minute! Students turning up at my door unannounced will not be helped.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
6 ME 3504 : Week 1 Course Notes Course notes will be provided on the Blackboard System You must print out the notes beforehand and bring them to class The notes are incomplete and will only include partially drawn figures and equations which must be completed during class. This assures both your attendance and attention during class.
Background image of page 6
7 ME 3504 : Week 1 Course Notes: My Version Differential equations ) ( t f kx x b x M = + + Laplace transform [ ] ) ( ) ( s F s X k bs Ms 2 = + + Transfer function k bs Ms 1 s F s X s G 2 + + = = ) ( ) ( ) ( M b k x f(t) Input force Output displacement v(t) t
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
8 ME 3504 : Week 1 Course Notes: Your Version Differential equations Laplace transform Transfer function ) ( t f kx x b x M = + + M b k x f(t) Input force Output displacement v(t) t You fill in here
Background image of page 8
9 ME 3504 : Week 1 Why do things vibrate? Consider a ball bouncing off of a wall v is +ive t 1 v = 0 t 2 t 3 High Kinetic energy Low potential energy High Kinetic energy Low potential energy Low Kinetic energy High potential energy v is -ive
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
10 ME 3504 : Week 1 Position, Velocity and Acceleration t x t v t a t 1 t 2 t 3 t 1 t 2 t 3 t 1 t 2 t 3
Background image of page 10
11 ME 3504 : Week 1 Bouncing between two walls v is +ive t 1 v = 0 t 2 High KE Low PE v is -ive t 3 High KE Low PE v is +ive t 5 High KE Low PE v = 0 t 2 Low KE High PE Low KE High PE
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
12 ME 3504 : Week 1 Velocity over cycle t v t 3 t 4 t 5 t 1 t 2
Background image of page 12
13 ME 3504 : Week 1 Stiffness and mass Vibration is cause by the interaction of two different forces one related to position (stiffness) and one related to acceleration (mass).
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 14
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/23/2011 for the course ME 3504 taught by Professor Thacker during the Spring '10 term at UVA.

Page1 / 44

ME_3504_week1_professor - Dynamic Systems Vibrations ME...

This preview shows document pages 1 - 14. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online