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Full-Text Articles in Engineering
Finite Element Analysis For An Involute Spur Gear Noise Excitation By Impact Effects, Wenbeen Li
Finite Element Analysis For An Involute Spur Gear Noise Excitation By Impact Effects, Wenbeen Li
Electronic Theses & Dissertations
The purpose of this study includes (1) to identify the relationship between the impact loads or backlash and the sound field pressure of impact direct noise of meshing gears, (2) to show that impact whether or not the impact direct noise contributes to the noise of overall gear system, and (3) to demonstrate how impact direct noise can be predicted. The method used to predict was finite element analysis and numerical solution. This research presents the analytical model of impact direct noise prediction for meshing gear teeth based on the data that the tooth vibration and surface are known by …
Tensile Comparison Of The Variables Using The Statasys 3-D Modeler, William Oscar Birt
Tensile Comparison Of The Variables Using The Statasys 3-D Modeler, William Oscar Birt
Electronic Theses & Dissertations
The objective of this study was to investigate some of the different variables that were used in building a prototype model on the Stratasys 3-D Modeler. Variables tested were: 1) speed of the head; 2) z slice; 3) road width; 4) orientation angle of the path; 5) tip and liquefier temperatures; 6) envelope temperature. There were 34 tests and each test had 10 specimens in it for a total of 340 tensile specimens. Each test consisted of the six variables. Tests indicated that the “orientation angle” variable had the greatest effect on tensile strength.
Roller Compacted Concrete As A New Method For Building Dams And Its Economic Advantages, Sami Tannous
Roller Compacted Concrete As A New Method For Building Dams And Its Economic Advantages, Sami Tannous
Electronic Theses & Dissertations
This document includes overviews of the planning and design processes, reviews of construction operations, evaluations of the behavior, and performance of completed dams. Included in this document are examples of roller-compacted concrete dam construction in the U.S., South America, Europe, Asia, and Australia. This document also provides information on the development of roller compacted concrete (RCC) to support the use of RCC in dam construction. This procedure offers rapid construction with a lower cost, compared with the traditional concrete practice, and challenges the economics of earthfill and rockfill embankment dams.