JaLCDOI 10.18926/15564
フルテキストURL Mem_Sch_Eng_OU_2_5.pdf
著者 Yamada Toshiro| Kani Kouki| Nishijima Kunihiro|
抄録 In order to clarify the sealing mechanism of an oil seal, it is necessary to know its fundamental properties and movement now in action. There are two subjects in this study. One is to reveal the temperature dependence of fundamental properties, mainly wringing force, average wringing pressure and lip contact width, and the other is to know the lip temperature now in action and to know how the lubrication is carried out at the lip portion. The measurements were carried out with our devised instruments for the former subject and with a thermocouple for the latter. A simple analysis of the lip temperature obtained was made in order to know a mechanism of the lubrication. The results indicate that with the rise of temperature of oil seal, the wringing force and the average wringing pressure decrease because of the reduction of rubber elastic modulus and of thermal expansion of spring, and the lip contact width hardly varies, and also indicate that under a constant temperature of lubricating oil, the lip temperature never rises so high as in the case of free rising of oil temperature, and that the fluid lubrication is carried out at the lip.
出版物タイトル Memoirs of the School of Engineering, Okayama University
発行日 1967-04-01
2巻
1号
開始ページ 5
終了ページ 11
ISSN 0475-0071
言語 English
論文のバージョン publisher
NAID 120002307333
JaLCDOI 10.18926/15539
フルテキストURL Mem_Sch_Eng_OU_1_23.pdf
著者 Yamada Toshiro| Kitagawa Shigeru|
抄録 For assessing the qualities of sheet metal for deep-drawing by the tension test, γ value is adopted generally. However, it is difficult and complicated to obtain the precise value of it. In order to obtain the value precisely and easily, the authors have made trialy the devices to measure directly the elongation and the reductions of width and thickness; these devices are transducers to which the electrical resistance strain gauges are applied. By using these devices, precise, continuous, multipoint and quick measurement can be done. It has been clarified by the continuous measurements that γ values are not the same relating to the elongations. It is recommended that one uses γ value obtained at about 25% elongation.
出版物タイトル Memoirs of the School of Engineering, Okayama University
発行日 1966-03-31
1巻
1号
開始ページ 23
終了ページ 28
ISSN 0475-0071
言語 English
論文のバージョン publisher
NAID 120002307551