MAE486_Fall11_L25_S - MAE 486 Design of Mechanical Systems...

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Unformatted text preview: MAE 486 Design of Mechanical Systems Lecture 25 Fall 2011 Today s topics: Exercise problems for final exam review. 1. The cost of assembly is determined by: (1) The material of the parts. (2) The difficult level in handling, inserting, and fastening the parts; (3) The shape of the parts; (4) The number of parts; (5) The tolerance of the parts; Answer: (a) (1) and (2); (b) (1), (3), and (5); (c) (2), (3), and (4); (d) (2) and (4); (e) All of them. 2. Which of the following pairing of the machining methods with the group of machining is correct? Machining methods: (1) Planner (2) Mill machine; (3) Turret lathe; Types of machining: (A) Tool rotate; (B) Workpiece rotate; (C) Tool translate Answer: (a) (1)-(A), (2)-(B), (3)-(C) (b) (1)-(C), (2)-(B), and (3)-(A); (c) (1)-(B), (2)-(C), and (3)-(A); (d) (1)-(C), (2)-(A), (3)-(B) (d) None of them, your answer: ˆ 3. What is the standard deviation of the machining process δ for a part with a dimension specification requirement of 1.5 ± 0.005 inch to achieve the required process capability index Cp = 1.2? 4. What is the break-even point for the following product: Labor cost at $ 2/unit; Material cost at $ 5/unit; G&A expenses at $ 1000; Profit at $ 1/unit; Sales overhead at $ 800; Factory expenses at $800; Depreciation on equipment at $ 4000. Review for Final ­Exam •  What are the main topics we have discussed a=er mid ­term? –  –  –  –  Modeling; Design for manufacturing; Robust design; Cost evaluaEon; Review for Final ­Exam •  Modeling –  Types of models; –  MathemaEcal modeling process; –  MathemaEcal modeling in design; •  Find the math. Model in design; –  Dimensional analysis; –  Geometric similarity; •  Scale method; –  Finite ­difference method; •  DiscreEzaEon and approximaEon; –  Finite ­element analysis; •  Difference from FDM; •  ConsEtuEon equaEon; •  Force ­displacement equaEon, sEffness ­matrix (1 ­D case); •  Types of elements; •  Steps in FEA process; •  Design for manufacturing –  Different aspects of manufacturing; –  Different types of manufacturing processes; –  Different classes of manufacturing processes; –  Different types of manufacturing systems; –  Manufacturing process selecEon; –  QuanEficaEon of part quality; –  Surface roughness quanEficaEon and tolerance; –  Cost of manufacturing; –  Guidelines of design for manufacturing; –  Different metal cuSng processes; –  Design for assembly; –  Guidelines of design for assembly; –  StandardizaEon; –  Mistake ­proof technique: Poka ­Yoke Review for Final ­Exam [email protected] du [email protected] edu [email protected] u [email protected] edu [email protected] du [email protected] edu [email protected] [email protected] edu [email protected] edu [email protected] du [email protected] du [email protected] edu [email protected] du [email protected] u nichba\@eden.rutgers. edu •  Robust design –  –  –  –  –  Process capability index; Taguchi methods; Signal ­to ­noise raEo concept; Procedure of robust design; FracEonal factorial design of experiments; [email protected] edu [email protected] [email protected] [email protected] .edu [email protected] du [email protected] [email protected] edu [email protected] edu [email protected] edu [email protected] edu [email protected] .edu [email protected] u ma\[email protected] .edu [email protected] du [email protected] du [email protected] edu [email protected] du [email protected] du [email protected] du [email protected] edu [email protected] [email protected] u [email protected] [email protected] edu [email protected] .edu jeff[email protected] du [email protected] du [email protected] du [email protected] du [email protected] edu du\ [email protected] [email protected] du mfi[email protected] [email protected] u [email protected] edu [email protected] [email protected] .edu [email protected] kgenfi@eden.rutgers.ed u [email protected] edu [email protected] u [email protected] edu [email protected] [email protected] [email protected] u [email protected] u [email protected] u [email protected] edu [email protected] u [email protected] edu [email protected] du [email protected] .edu [email protected] u [email protected] [email protected] edu [email protected] edu [email protected] du [email protected] u [email protected] edu [email protected] [email protected] du [email protected] [email protected] u [email protected] u [email protected] u [email protected] [email protected] du [email protected] edu [email protected] edu [email protected] .edu [email protected] du [email protected] edu [email protected] edu [email protected] edu [email protected] du [email protected] du [email protected] u [email protected] du [email protected] edu [email protected] du [email protected] du [email protected] .edu [email protected] [email protected] .edu [email protected] du [email protected] edu [email protected] edu adammetz@eden.rutge emichael@eden.rutgers .edu nimiller@eden.rutgers.e du mmisbah@eden.rutgers .edu amitev@eden.rutgers.e du slobodan@eden.rutgers .edu mike.monico3@rutgers. edu montefuk@eden.rutger robmourn@eden.rutger amousavi@eden.rutgers .edu orphs@eden.rutgers.ed u jnespoli@eden.rutgers. edu jaredn@eden.rutgers.ed u saomeara@eden.rutger chrisone@eden.rutgers. edu felipeo@eden.rutgers.e du eough@eden.rutgers.ed u aeonix@eden.rutgers.e du daipatel@eden.rutgers. edu kishen25@eden.rutgers. edu nirav731@eden.rutgers. edu rpatel89@eden.rutgers. edu britanie@eden.rutgers. edu bpri\s@eden.rutgers.e du chris.pryce@rutgers.ed u jpyun89@eden.rutgers. edu aaronqua@eden.rutgers .edu karhodes@eden.rutgers .edu lriera@eden.rutgers.ed u ctrod@eden.rutgers.ed u krome@eden.rutgers.e du jamesrow@eden.rutger russo\o@eden.rutgers. edu bennet.samani@rutgers .edu dougsang@eden.rutger vsathe@eden.rutgers.e du sinee@eden.rutgers.ed u jacshiv4@eden.rutgers. edu msilves@eden.rutgers.e du skerbetz@eden.rutgers. edu dsobers@eden.rutgers. edu framer17@eden.rutgers .edu robsteph@eden.rutgers .edu jestern@eden.rutgers.e du cswec@eden.rutgers.ed u dswope@eden.rutgers. edu astang@eden.rutgers.e du simbat@eden.rutgers.e du mntess@eden.rutgers.e du ntha\e@eden.rutgers.e du \heckst@eden.rutgers. edu gEmber@camden.rutge torch75@eden.rutgers. edu qtran04@eden.rutgers. edu vanglahn@eden.rutgers .edu vietor87@eden.rutgers. edu vvasu@eden.rutgers.ed u lilmv11@eden.rutgers.e du twalla27@eden.rutgers. edu rweir@eden.rutgers.ed u westonmb@eden.rutge jnewski@eden.rutgers.e du wongjjl@eden.rutgers.e du samuel.wood@rutgers. edu huimin1@eden.rutgers. edu ayacoub@eden.rutgers. edu tomo@eden.rutgers.ed u yangwei@eden.rutgers. edu zsunsun@eden.rutgers. edu flairkid@eden.rutgers.e du zahid297@eden.rutgers .edu ezanghi@eden.rutgers.e du zdziebko@eden.rutgers. edu azhupa1@eden.rutgers. edu •  Cost evaluaEon –  Types of cost; –  DeterminaEon of the cost of a product; –  Break ­even point; –  Overhead cost; –  Main categories of overhead; –  DeterminaEon of overhead; •  Problem 1 (12.6): A plasEc beam (6 in diameter) used to haul small loads into a lo= extends 8 = in the horizontal plane form the building. If the beam is made from glass ­reinforced PET, how much would the beam deflect on a 23 C day when hauling up a 900 lb load? ...
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This note was uploaded on 02/26/2012 for the course 650 486 taught by Professor Zou during the Fall '11 term at Rutgers.

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