lec3 (1) - structures II. Stresses and strength III....

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1.050 Engineering Mechanics Lecture 3: Dimension analysis and application to engineering structures
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1.050 – Content overview I. Dimensional analysis 1. On monsters, mice and mushrooms Lectures 1-3 2. Similarity relations: Important engineering tools Sept. II. Stresses and strength 2. Stresses and equilibrium Lectures 4-15 3. Strength models (how to design structures, foundations. . against mechanical failure) Sept./Oct. III. Deformation and strain 4. How strain gages work? 5. How to measure deformation in a 3D Lectures 16-19 structure/material? Oct. IV. Elasticity 5. Elasticity model – link stresses and deformation Lectures 20-31 6. Variational methods in elasticity Nov. V. How things fail – and how to avoid it 7. Elastic instabilities 8. Plasticity (permanent deformation) Lectures 32-37 9. Fracture mechanics Dec.
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1.050 – Content overview I. Dimensional analysis Lecture 1: Introduction & Galileo's problem Lecture 2: Dimensional Analysis and Atomic Explosion Lecture 3: Dimension analysis and application to engineering
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Unformatted text preview: structures II. Stresses and strength III. Deformation and strain IV. Elasticity V. How things fail and how to avoid it D-Analysis of Tall Buildings Graphic of tall buildings removed due to copyright restrictions. http://www.joelertola.com/grfx/grfx_update_feb_05/tall_buildings.jpg Hurricane Katrina Wind speeds 200 km/h http://www.nasa.gov/images/content/126301main_Katrina_082805_516.jpg http://www.asiatraveltips.com/newspics/074/BurjDubai.jpg Photograph of skyscraper removed due to copyright restrictions. Lab Results: Drag Coefficient on smooth objects 400 200 100 60 40 20 10 6 4 2 1 0.6 0.4 0.2 0.1 0.06 10-1 10 10 1 10 2 10 3 10 4 10 5 10 6 10 7 Smooth Cylinder Smooth Sphere D E C B A Reynolds Number Re = 1 =-1 UD v C D = 2 = 2F a (UD) 2 a U 2 D 2 C D = 24 Re = F D UD v = F ( 1 = ) Figure by MIT OpenCourseWare....
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lec3 (1) - structures II. Stresses and strength III....

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