Synopsis
Design of Mechanical Power Transmissions addresses the classic problem of the need for an intermediate device between a mechanical power source and driven load that converts the motor output torque and speed to the torque and speed needs of the load. The content emphasizes the mathematical modeling and design performance analysis of the more commonly available fixed and variable ratio mechanical transmissions. A special feature of this monograph is that in every analytic development the solution process begins with the application of fundamental engineering principles to appropriate physical models. All presentations include a combination of text explanation of the solution development together with illustrations of the symbolic mathematical process. The goal is to provide an understanding of the basic theory and models that are appropriate to the engineering application of the relevant subject matter in a succinct manner. The knowledge content covered includes: Chapter 1: definitions of force, torque, work and power: relation between torque, speed and power. Chapter 2: rolling contact, involute gear tooth geometry, diametral pitch, gear ratios, simple and compound gear trains. Chapter 3: planetary gear system analysis, general gear ratio relationships, classic gear ratio outputs, interpretation. Chapter 4: example applications, manual mechanical hoist, variable high gear ratio hybrid planetary. Chapter 5: fixed ratio transmission performance, effect of input/output rotation on reaction torque, energy loss inclusion. Chapter 6: variable speed ratio transmissions, fluid coupling, torque converter, strengths and weaknesses. Chapter 7: transmission selection, variable speed power output and load, start up time. This monograph is not intended to be a textbook or comprehensive reference source. Its purpose is to assist the once acquainted reader in recalling relevant knowledge content or to provide concise complimentary assistance to those acquiring the knowledge for the first time in a structured learning environment.
About the Author
Carl F. Zorowski is R. J. Reynolds Professor Emeritus of Mechanical and Aerospace Engineering at North Carolina State University. He attended Carnegie Mellon University, earned his doctorate in 1956 and taught there until 1962 before going to North Carolina State University. His academic carrier at NCSU included teaching, research, outreach and administration. He served as Head of Mechanical and Aerospace Engineering and Associate Dean for Academic Affair in the College of Engineering. He cofounded and directed the Integrated Manufacturing Systems Institute, an early inter-disciplinary master’s practice program. His passion is classroom instruction, course content development and delivery methods emphasizing mathematical modeling and design performance analysis of mechanical systems. In 1993-97 he directed the NSF South Eastern University and College Coalition for Engineering Education dedicated to revitalizing undergraduate engineering curricula. Following retirement in 1997 he has offered courses in Mechanical Design Engineering for the college’s distance education master’s degree program. He is a fellow of the American Society of Engineering Education and the American Society of Mechanical Engineers.
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