Fundamentals of Machine Component Design. R.C. Juvinall and K.M. Marshek;
John Wiley & Sons, 3rd Edition. Objectives: This course is a continuation of ...
Ryerson University Department of Mechanical and Industrial Engineering COURSE OUTLINE MEC811 MACHINE DESIGN II Prerequisite:
MEC531, MEC613, and MEC721
Textbook:
Mechanical Engineering Design Richard G. Budynas and J. Keith Nisbett, McGraw-Hill, 8th Edition
References:
Fundamentals of Machine Component Design R.C. Juvinall and K.M. Marshek; John Wiley & Sons, 3rd Edition
Objectives: This course is a continuation of Machine Design I (MEC613), but is specifically aimed at students opting for mechanical design. The intention is to lay a solid design foundation and to apply the concepts in a series of minor problems and projects. The students will be required to incorporate into their studies the principles learned in Mechanics of Materials and Machines. Course Organization and Evaluation This is a one term course, consisting of 2 lectures and 1 tutorial hour per week. Tutorial Problem Sets and Projects 30% Term Test 20% Final Examination 50% Note: All of the required course-specific written reports/assignments/labs will be assessed not only on their technical/academic merit, but also on the communication skills exhibited through them. ACADEMIC MISCONDUCT Committing academic misconduct, such as plagiarism and cheating, will trigger academic penalties, including failing grades, suspension and possibly expulsion from the University. As a Ryerson student, you are responsible for familiarizing yourself with the Student Code of Academic Conduct, which can be found online at: www.ryerson.ca/acadcouncil/current/pol60.pdf Course Outline: General design concepts required for rigidity, reliability, manufacturing, and safety will be studied. By the end of this course the student has acquired enough confidence to understand and solve problems in the design of machine elements with the help of commonly available technical literature, tables and graphs. Detailed Course Content:
MEC811 Machine Design II - Course Outline Continued
2
Gear Systems: Spur: Geometry and nomenclature. Interference and contact ratio. Gear-tooth bending stress (Lewis equation unit dynamic load as a function of velocity and the AGMA procedure). Geartooth wear load for surface durability (Buckingham=s dynamic load, using the limiting load for wear and the AGMA procedure). Helical gears: gear geometry and nomenclature, force analysis, dynamic loading, bending and surface fatigue strengths. Bevel Gears: strength of teeth, form factor, dynamic loading, rated strength, rated wear, power capacity, coniflex, zerol, spiral and hypoid gears, forces and design details. Clutches and Brakes: wear, frictional work and power, permissible energy absorption and design data, disk clutches, disk brakes, cone clutches, cone brakes, short-shoe brakes, long-shoe drum brakes both external and internal, band brakes. Balancing of Rotating and Reciprocating Systems Static vs. dynamic unbalance, whirling vs. transverse vibration, Rayleigh’s and Dunkerley’s methods for determining natural frequencies, dynamic balancing, reciprocating unbalance, multicylinder engines, balance shafts. Introduction to Fracture Mechanics Basic concepts; stress intensity factor; crack propagation. Design for Manufacturability and Safety Design for Manufacturability: concurrent engineering, manufacturing processes, computer-aided manufacturing, reducing numbers of parts, standardization, symmetry/asymmetry, robust design and variability reduction, decreasing variation and increasing tolerances. Faculty Course Survey: Students will be required to complete this survey during the weeks of 10, 11 or 12.
Date: ____________
Prepared by: D. Oguamanam Approved by:
Date: ____________ J. Friedman
