著者

野中 俊昭 遠藤 靖典 大山 忠夫 吉川 広 中澤 伸一

出版者

日本知能情報ファジィ学会

雑誌

知能と情報 (ISSN:13477986)

巻号頁・発行日

vol.18, no.6, pp.813-820, 2006 (Released:2017-09-24)

被引用文献数

1 1

著者

大山 忠夫 内田 清五

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集 C編 (ISSN:03875024)

巻号頁・発行日

vol.60, no.574, pp.2096-2102, 1994-06-25 (Released:2008-02-26)

参考文献数

6

被引用文献数

2 3

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In order to investigate the behavior of adhesion force from a microslip region to a gross sliding one, we carried out experimental studies mainly under water lubrication with static and dynamic contact loads. Every repeated experiment up to gross sliding showed a decrease in the adhesion coefficient under water lubrication and the traction force in the gross sliding region showed unstable behavior. Furthermore, it was recognized that the measured adhesion force during gross sliding agreed well with the values calculated with sliding acceleration and moment of inertia of rollers. The adhesion force under dynamic load was less than that under static load.

著者

野中 俊昭 大山 忠夫 遠藤 靖典 吉川 広

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集 C編 (ISSN:03875024)

巻号頁・発行日

vol.71, no.705, pp.1604-1610, 2005-05-25 (Released:2011-03-04)

参考文献数

14

被引用文献数

1

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Dynamic behavior of train sets on railways during braking can be regarded as the combination of the translation and the rotation. That is, both the kinetic energy for the translation of train sets and the one for the rotation of each axle are decreased to zero as the braking force and the adhesion force of each axle have an effect on each other. However, dynamic models for brakes of train sets have been hardly represented and discussed. Furthermore, a reduction of wheel damages has never been evaluated for control performances of Anti-lock Braking System (ABS), in spite of one of the most important aims of ABS. In this paper, we propose a dynamic model for brakes of train sets consisting of n axles and an equation for evaluating wheel damages. And we show that the proposed model and equations are useful to evaluate the control performances of ABS for train sets.

著者

大山 忠夫 大矢 光伸

出版者

一般社団法人日本機械学会

雑誌

日本機械学會論文集. C編 (ISSN:03875024)

巻号頁・発行日

vol.52, no.475, pp.1037-1046, 1986-03-25

被引用文献数

1

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From our experimental results previously reported, it was considered that the formation of water film between contact surfaces remarkably influenced on adhesion force or contact mechanism under water lubrication. Here are reported the results of numerical analysis based on the Herrebrugh's integral equation for applying the EHL theory to water lubrication of steel rollers. The formulas of film thickness were obtained with various EHL parameters for lower pressure-viscosity coefficient such as that of water. Furthermore, it was shown that the adhesion coefficients previously obtained were well related to the contact load supported with asperities through water film, which was estimated by assuming asperities with spherical summit on one surface and Gaussian asperity height distribution.