Title:
鉄道車両の摩擦係数演算方法及び走行安全性評価方法並びに軌道の潤滑状態管理方法
Document Type and Number:
Japanese Patent JP6924440
Kind Code:
B2
Abstract:
To provide a method for accurately calculating the friction coefficient μ1between an outer rail side wheel 11 of a front wheel set 1a of a carriage 100 and an outer rail R1.SOLUTION: The present invention is a method for calculating a friction coefficient μ1in a curved section. An inner track derailment coefficient κ (=lateral pressure Q1/wheel weight P1), a front tangential force index Ta (=tangential force T1/wheel weight P1), and a rear tangential force index Tb (=(tangential force T2/wheel weight P2+tangential force T2/wheel weight P2)/2) are input based on the results of performing motion analysis using friction coefficients μ1, μ1, μ2, and μ2as variables between the four wheels of a carriage and a rail in an analysis model of a railway vehicle. Thus, the input-output relation which outputs the friction coefficient μ1is identified. The friction coefficient μ1is calculated as the output by using the inner track derailment coefficient κ, the front tangential force index Ta, and the rear tangential force index Tb, which are measured when the railway vehicle travels the curved section, as the input for the input-output relation.SELECTED DRAWING: Figure 1
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Inventors:
Shinagawa Shinsuke
Nakai Takuji
Hiroyuki Ohno
Yasuhiro Sato
Masatake Ogata
Yohji Dotsuji
Yosuke Ichiyanagi
Nakai Takuji
Hiroyuki Ohno
Yasuhiro Sato
Masatake Ogata
Yohji Dotsuji
Yosuke Ichiyanagi
Application Number:
JP2017235583A
Publication Date:
August 25, 2021
Filing Date:
December 07, 2017
Export Citation:
Assignee:
Nippon Steel Corporation
Incorporated Administrative Agency Automotive Technology Agency
National University Corporation Ibaraki University
Incorporated Administrative Agency Automotive Technology Agency
National University Corporation Ibaraki University
International Classes:
B61K9/08; E01B35/00; G01N19/02
Domestic Patent References:
| JP2006188208A | ||||
| JP201551674A | ||||
| JP1254466A | ||||
| JP200688967A | ||||
| JP2008126811A | ||||
| JP2016113018A |
Attorney, Agent or Firm:
Makoto International Patent Office