表面に周期的に分布する半楕円体状の接触圧力による半無限弾性体内部の応力解析 (第1報 理論式の誘導〉

URI http://harp.lib.hiroshima-u.ac.jp/it-hiroshima/metadata/7053
File
Title
表面に周期的に分布する半楕円体状の接触圧力による半無限弾性体内部の応力解析 (第1報 理論式の誘導〉
Title Alternative
The analysis of stress distribution in a semi-infinite elastic body by periodically spaced semi-ellipsoid contact pressures (1st Report Derivation of theoretical equations for stress components)
Author
氏名 山下 尚義
ヨミ ヤマシタ ナオヨシ
別名 Yamashita Naoyoshi
氏名 片山 剛之丞
ヨミ カタヤマ ゴウノジョウ
別名 Katayama Gonojo
NDC
423
Abstract

Machine elements,such as gears and anti-friction bearings are subjected to rolling and sliding contact loads which cause surface deterioration in the form of pitting or spalling,or dimensional change. The former occurs in hard materials and latter soft materials. Dimensional change occurs as plastic deformation which accumulates with increasing load cycles. One of the best-known results in mechanical engineering comes from the classical analysis by H. Hertz of the elastic contact. It has long been realized that surfaces are rough on a microscopic scale,and that this causes the real area of contact to be extremely small compared to the nominal area. It is usually assumed that the real area of contact between two nominally flat metal surfaces is determined by the plastic deformation of their highest aspeties. This leads at once to the result that the real area of contact is directly proportional to the load and independent of the apparent area. Archard pointed out that plastic deformation could not be the universal rule,and introduced a model which showed that,contrary to earlier ideas,the area of contact could be proportional to the load even with purely elastic contact. Most of the attention of the past work has been upon the determination of relationships between the real contact area and geometric parameters. However,little has been done to determine the effect of these parameters upon the state of stress within the bodies. Herin,a model is constructed that enables one to study the effect of asperity density in the rolling-sliding contact. The theoretical equations for the stress component in a semi-infinite elastic body by periodically spaced semi-ellipsoid pressures are derivated by using a Galerkin vector potential function.

Journal Title
広島工業大学研究紀要
Volume
10
Spage
167
Epage
172
Published Date
Jan-76
Publisher
広島工業大学
ISSN
3851672
NCID
AN0021271X
Language
jpn
NIIType
Departmental Bulletin Paper
Text Version
出版社版
Relation URL
Old URI
Set
it-hiroshima