Process equipment used for lamination was evaluated to determine the causes for variance of the thickness of the laminated material applied to the plastic sheathing. This study selected one area, specifically the pumping system, for further evaluation. The pumping system being evaluated to determine the dynamic characteristics of the flow and to determine if any vibrations from the gear drive unit were being transmitted through the pump to perturb the flow. The natural frequencies were determined analytically and experimentally for shafts in bending and angular modes. The excitation frequencies (frequencies actually generated through the actual running of the gear drive unit) were also analytically and experimentally determined. The analytical excitation frequencies were calculated using the basic equations developed for shafts, gears and bearings at specific rpms. The conclusion of the experiment indicated that the pump gears have the largest impact on the flow characteristics. The experiment also indicated that the vibrations from the gear drive unit were transmitted through the pump which also affected the flow characteristics of the fluid.
Library of Congress Subject Headings
Gear pumps--Vibration; Coating processes
Department, Program, or Center
Mechanical Engineering (KGCOE)
Kulpa, Matthew, "A Vibrational study of gear pumps and gear pump drives" (1991). Thesis. Rochester Institute of Technology. Accessed from
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