Introduction to Mechanical and Aerospace Engineering
Introduction to Mechanical and Aerospace Engineering ME 100
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This 8 page Class Notes was uploaded by Alexandro Hermiston on Sunday October 25, 2015. The Class Notes belongs to ME 100 at University of Nevada - Las Vegas taught by Mauer in Fall. Since its upload, it has received 18 views. For similar materials see /class/228641/me-100-university-of-nevada-las-vegas in Mechanical Engineering at University of Nevada - Las Vegas.
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Date Created: 10/25/15
UNLV MEGI 00 Intro week 1 Notes MEG 100 on WebCT Every student can access WebCT at httpsWebctceunlvedu The WebCT page has a link to the MEGlOO Web page go there for syllabi assignmenm schedules and course materials for both th lecture and the project Distance Ed students use WebCT for homework submissions private mail and to View your grades Assignments 1 Homework 1 due Monday 120 MEG 100 Lab Assignment 1 due Week of 1 18 2 Design speci cations for a Sumo Robot Follow instructions on project schedule Web page UNLV MEGIOO Intro week 1 Notes MEG 100 What will I learn I Engineering design Design Methods 011 can always improve products Communication Repoits and Presentations Computer Use become ef cient We live in an engineered World Our Engineered World Everyday we are exposed to modern tools such as Everyday we are exposed to artifacts such as 7 Computers The Engineered World The Engineered World Everyday we are Everyday we are exposed to artifacts exposed to artifacts such as such as 7 Computers 7 Computers 7 Automobiles 7 Automobiles 7 Cellular Phones UNLV MEGlOO Intro week 1 Notes Our Engineered World I Everyday We are exposed to artifacts such as 7 Computers 7 Automobiles 7 Cellular Phones 7 MassiveLiving and Of ce Strucmres Engineers are Problem Solvers We use the tools of science Mathematics Rigorous Logic Scientific Discovery I Galileo Galilei Galileo Galilei 1564 1642 Scienti c Experiments Ea1th rotates about the sun Science is systematic knowledge derived from observation study and experimentation carried on in order to determine the nature of what is being studied Chapter 1 The Engineering Profession Always Please read the assigned chapters ahead of class This will give us time in class for discussion UNLV MEGlOO Intro week 1 Notes The Place of the Engineer Who needs them and What do they do e Middle The trajectories of C on Were not easil found especially before Newton UIJILHBI LdUle W81 still a tough job in 1945 In desperation the US Army funde the rst electronic computer the ENIAC The Beginnings of Engineering forti cations so that they can best withstand cannon impact Engineers use Applied Mathematics Scientific Instruments Italians saw engineering skills as ingenuity andnamed their practitioners Ingeniatore today in It ingegnere Nico lo at left were the Citta as Well are called ingegnere UNLV MEGlOO Intro week 1 Notes Today Design using Solid Modeling Softwre Nicolo Tartaglia On Forti cations a i i i 5 W 1 i it ll 39 I a 7 A gt 11quotin i V V39l El Circuit Design The Design Process Activity Time Schedule T 10 20 30 40 50 60 70 Design Steps Identify need Define problem Search Constraints Criteria Alternatives Analysis Decision Specifications Communication A time schedule must be developed early in order to control the design process The Design The Design Process Process MEG 100 Lab Assignment 1 due second Week of class 7 Design speci cations for a Sumo Robot Follow instructions on project schedule web page Iteration FIGURE 11 The engi neering design process UNLV MEG100 Intro week 1 Notes mummy Chapter EKV V N mff Engineer chmgig 13 arm TSOMEV WVE39 39 Machinist Chapter 12 Technology Team Chapter 13 Functions of the I 1 Engineer Example Turbine Design I Chapter 13 Functions of the Engineer Chapter 13 Functions of the Engineer What must we know for Turbine Design UNLV MEGlOO Intro week 1 Notes Turbine stages N sumw swamy Nam Row Mme Chapter 13 Functions of the Engineer What must we know for Turbine Design 2 Engineering Science Chapter 13 Functions 01 the Engineer What must we know for Turbine Design 2 Engineering Science Fluid Dynamics Combustion Materials Strain and Stress Chapter 13 Functions 01 the Engineer As students in MEG you will take courses in Fluid Dynamics Combustion Materials Strain and Stress C apter 1 Materials Strain and Stress Example Finite Element Analysis FEA Chapter 13 F unctlons oi the Fluid Flow E 1116 Example Designing the blade surface UNLV MEGl 00 Intro Week 1 Notes Chapter 13 Functions of the 12min sm Turhlne stages Rm w Routing u ld Rotor Ram Dyn am lcs Sl unuy Sa anlry Naz Ron Nani mm Chapter 13 Functions of the Engineer What happens if there is a design or manufacturing error Summary 39We must understand applied science precisely and thoroughly thematical analysis 39Guard against mistakes IErrors can result in accidents A Boeing 767 made ergency landing at Sydney on 22 March 1999 after aportion ofa fan blade see preceding slide in the right engine broke y The failure had originated at aforeign object damage impact site 254 rnrn aft ofthe leading edge on the rear face ofthe blade es orniineral debris indicate that the foreign object damage ms the result of stone ingestion Fatigue crack growth probably ght cycles