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Unformatted text preview: Click to edit Master subtitle style Welcome to Structural Dynamics! Dr. Jeffrey K. Bennighof ASE 365 Spring 2010 Preliminaries • My office data: WRW 308B, 4714709 • Email: [email protected] (or [email protected]) • Office hours: 1112 a.m. MWF • Textbook: Fundamentals of Vibrations by L. Meirovitch • Grading: 3 tests (20% each), final (30%) • Homework: 10% Reading and homework • Read sections 18, 10 of chapter 1 • Homework sets due on Mondays • Assignments posted on http://courses.utexas.edu • Grader: Rohan Mahadik (WRW 214) “How to thrive in 365” • Come to class • Stay engaged in class: – Ask questions, participate – Take notes • Read the book • Try to finish the homework by Friday, if it’s due on Monday Concepts from Dynamics Newton’s laws for a particle: 1. No force → no acceleration 2. m v p Freebody diagrams 1. Decide: What is the “object”? 2. Draw the object separated from its surroundings (a “free body”). 3. Represent all forces and moments acting on the body. 4. “Inertia forces” do not belong on a FBD. (Maybe on a “kinetic diagram”…) Newton’s laws for a particle (cont’d): 3. Interaction forces between two particles are equal and opposite fi j mj fj i mi text. in 67 p. 1.1, Problem : Example Moment of a force: Moment of momentum (a.k.a. angular momentum): m r F O m r p O " conserved. is momentum Angular " : constant is , If O O H M = text. in 69 p. 1.5, Problem at Look Work and energy : work of Increment m F dr dr F ⋅ = dW : energy Kinetic dT m d d m dt dt d m dt m dt dt d m m dW = ⋅ = ⋅ = ⋅ = ⋅ = ⋅ = ⋅ = r r r r r r r r r r dr r 2 1 ) ( ) ( ) ( )...
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This note was uploaded on 09/18/2011 for the course ASE 365 taught by Professor Staff during the Spring '10 term at University of Texas at Austin.
 Spring '10
 Staff

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