HES5310-Machine Dynamics-2Dr. Jamal NaserSenior LecturerFaculty of Engineering & Industrial ScienceSwinburne University of TechnologyNB: These lecture notes are prepared from “Design of Machinery”(the book by Robert L Norton and Theory of Vibration by William T Thompson). These notes will help the students to follow lectures in the class. Students should read the book. Students should not depend on these lecture notes only.Subject code and titleES5310 Machine Dynamics 2LocationHawthornDuration and contactOne semester, 60 hoursCredit points12.5Courses with this subjectBachelor of Engineering (Mechanical)Prerequisites Substantial completion of the Intermediate Stage of the course. (HES2310) Machine Dynamics-1CorequisitesNoneAimsTo develop the ability to solve problems involving the analysis and synthesis of mechanisms and machines. To develop the ability to design viable mechanism solutions to real, unstructured engineering problems.ContentKinematics of mechanisms (25) Analysis of linkages and four-bar slider crank. Linkages of more than four bars. Transmission angles, toggle positions. Types of kinematic synthesis, precision points, two position motion generation by analytical synthesis. Matrix solution, three position motion generation, examples of analytical linkage synthesis. Velocity analysis, instant centres, velocity analysis with instant centres. Centrodes, slip velocity, examples of analytical solutions for velocity analysis. Acceleration: Graphical acceleration analysis. Examples of analytical solutions for acceleration analysis. Acceleration of any point on a linkage. Human tolerance of acceleration. JerkMechanics of Machinery (35%) Cam terminology, SVAJ diagrams, cam design. Rolling cylinders, law of gearing. Gears: interference and undercutting, gear trains & transmissions. Review of the fundamentals of dynamics Analysis of linkages. Shaking forces and shaking torque, flywheels. Balancing of a four-bar linkage, measuring and correcting imbalance. Slider-crank kinematics. Gas force and gas torque, equivalent masses, inertia and shaking forces and torques. Pin forces and balancing in the single cylinder engine. Design trade-offs. Types of robots: Joints, end effectors, envelopes, equations of motion, practical considerations.Engine Dynamics (10%) Engine kinematics, flywheels, balancing. Design trade offs and ratios.Vibration (30%)Multi-degrees of freedom - matrix formulation and solution (eigen values), principal modes and principal co-ordinates, forced vibration of systems.Vibration of continuous system: beams and torsion analysis, finite difference and Rayleigh’s methods.
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