tailieunhanh - BASICS OF MECHANICAL ENGINEERING: INTEGRATING SCIENCE, TECHNOLOGY AND COMMON SENSE

The dissemination of micro-electronics during the 1980s led to innovation. On the leading edge of these technologies was the machine tool subsector. However, the Japanese were the first to apply advanced controls and gained shares in global markets propelled by their lead. Since then Europe has caught up and ME competes at eye level with Japan. 10 A detailed assessment of the technological position in this area and other fields of relevance for ME, such as nanotechnology, optics, new materials and composites, is performed in Chapter 0. Roughly one third of ME output is intermediary products that are delivered to. | BASICS OF MECHANICAL ENGINEERING INTEGRATING SCIENCE TECHNOLOGY AND COMMON SENSE Paul D. Ronney Department of Aerospace and Mechanical Engineering University of Southern California Available on-line at http AME101F11 Copyright 2006 - 2011 by Paul D. Ronney. All rights reserved. Table of contents TABLE OF CONTENTS II FOREWORD IV CHAPTER 1. WHAT IS MECHANICAL ENGINEERING 1 CHAPTER 2. UNITS 4 CHAPTER 3. ENGINEERING SCRUTINY 9 Scrutinizing analytical formulas and results 9 Scrutinizing computer solutions 10 Examples of use of units 11 CHAPTER 4. STATISTICS 17 Mean and standard deviation 17 Stability of statistics 18 Least-squares fit to a set of data 19 CHAPTER 5. FORCES IN STRUCTURES 22 Forces 22 Moments of forces 22 Types of forces and moments 25 Analysis of statics problems 27 CHAPTER 6. STRESSES STRAINS AND MATERIAL PROPERTIES 36 Stresses and strains 36 Pressure vessels 44 Bending of beams 45 Buckling of columns 52 CHAPTER 7. FLUID MECHANICS 54 Fluid statics 54 Equations of fluid motion 56 Bernoulli s equation 56 Conservation of mass 57 Viscous effects 59 Definition of viscosity 59 No-slip boundary condition 59 Reynolds number 60 Navier-Stokes equations 61 Laminar and turbulent flow 62 Lift drag and fluid resistance 62 Lift and drag coefficients 62 Flow around spheres and cylinders 63 Flow through pipes 65 ii Compressible flow 68 CHAPTER 8. THERMAL AND ENERGY SYSTEMS 73 Conservation of energy - First Law of Thermodynamics 73 Statement of the First Law 73 Describing a thermodynamic system 75 Conservation of energy for a control mass or control volume 76 Processes 78 Examples of energy analysis using the 1st Law 78 Second Law of thermodynamics 82 Engines cycles and efficiency 83 Heat transfer 87 Conduction 87 Convection 89 Radiation 89 CHAPTER 9. WRITTEN AND ORAL COMMUNICATION 91 APPENDIX A. SUGGESTED COURSE SYLLABUS 97 APPENDIX B. DESIGN PROJECTS 106 Generic information about the design projects 106 How to run a meeting PDR s philosophy. 106 .