| Summary: | 碩士 === 大葉大學 === 機械與自動化工程學系 === 106 === In this thesis, parametric designs of a swash plate piston pump and a bent-axis piston motor are studied. Flow ripple rate and torque ripple rate while operating are known as the main causes for noises in swash plate piston pumps and bent-axis piston motors. In order to reduce noises and improve the flow stability, computational fluid dynamics (CFD) simulations for designs of a swash plate piston pump and a bent-axis piston motor are conducted. Firstly, the fluid with high rotational speed and pressure in grooves and pre-compression chambers are modeled by PumpLinx software. Using parametric design and CFD approachs, the designs of grooves and pre-compression chambers are optimized for output pressure, speed and volume. After that, the fluid pressure which is caused while operating are used to conduct stress analysis of the swash plate piston pump and the bent-axis piston motor. By investigating in on stresses and deformations of the structures, design’s rigidity is enhanced.
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