2021 Fiscal Year Final Research Report
Establishment of mathematical model of new component for oil-hydraulic system to reduce pressure pulsation
| Project/Area Number |
19K04152
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 18040:Machine elements and tribology-related
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| Research Institution | Ashikaga University |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | 油圧 / 圧力脈動 / 圧力脈動抑制素子 / 数学モデル / シミュレーション |
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| Outline of Final Research Achievements |
In order to achieve a breakthrough in the mature oil-hydraulic industry, the pressure pulsation suppression element for oil-hydraulic systems has been developed in our laboratory. It has been shown experimentally that the element can reduce pressure pulsation in oil-hydraulic systems by about 43%. In addition to it, it is simple in structure and can be installed in-line in oil-hydraulic piping. However, it has not been clarified what characteristics of this element contribute to the suppression of pressure pulsation. Therefore, this study established a mathematical model that can predict the performance of this element at the design stage by comparing the experimental and simulated results of this element. In addition, frequency response tests revealed that this element significantly suppresses the amplitude of the frequency twice the integral multiplication and reduces pressure pulsation.
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| Free Research Field |
油圧・空気圧
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| Academic Significance and Societal Importance of the Research Achievements |
本研究室で開発している油圧システム用圧力脈動抑制素子の数学モデルの検討を行った。この素子は内部の弾性体が金属の隙間を介して大気と接しており、検討事例のない特殊な構造を有する素子の1D数学モデルを導出したことは学術的に大いに興味深い点であると考えられる。さらに、この研究を通して、素子の改良を行い、工作機械でよく利用される3.5MPaという圧力下で圧力脈動を約43％（約3.5MPa±0.07MPa）まで、圧力脈動を低減できるようになった。これにより、実装自由度に富む新たな油圧システム用圧力脈動抑制素子の開発が可能となり、成熟した油圧産業のブレークスルーに貢献できるものと考える。
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