Analysis of the Elastic Contact of a Hollow Ball With a Flat PlateSource: Journal of Tribology:;1970:;volume( 092 ):;issue: 001::page 138DOI: 10.1115/1.3451298Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents the analysis of the stress field in a hollow sphere in the vicinity of the contact area. The sphere is subjected to a normal load applied through a flat plate. The elastic contact shape and extent are developed for a load of 1000 lb applied to a 1-in-dia hollow ball with a 0.08-in-thick wall. Hollow ball shell bending stresses have a significant effect upon the subsurface stress field. Fatigue life estimates for the hollow ball vary significantly depending upon the selection of decisive stress amplitude. Comparison of the maximum value and location of the reversing orthogonal subsurface shear stress with solid ball data according to the Lundberg-Palmgren dynamic life theory predicts a 91.6 percent life reduction for the hollow ball contact. The use of the unidirectional subsurface shear stress results in a prediction of hollow ball contact life over 30 times the solid ball contact life.
keyword(s): Flat plates , Stress , Shear (Mechanics) , Bending (Stress) , Fatigue life , Shapes AND Shells ,
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| contributor author | J. H. Rumbarger | |
| contributor author | P. R. Eklund | |
| contributor author | R. C. Herrick | |
| date accessioned | 2017-05-09T00:46:13Z | |
| date available | 2017-05-09T00:46:13Z | |
| date copyright | January, 1970 | |
| date issued | 1970 | |
| identifier issn | 0742-4787 | |
| identifier other | JOTRE9-28555#138_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/147256 | |
| description abstract | This paper presents the analysis of the stress field in a hollow sphere in the vicinity of the contact area. The sphere is subjected to a normal load applied through a flat plate. The elastic contact shape and extent are developed for a load of 1000 lb applied to a 1-in-dia hollow ball with a 0.08-in-thick wall. Hollow ball shell bending stresses have a significant effect upon the subsurface stress field. Fatigue life estimates for the hollow ball vary significantly depending upon the selection of decisive stress amplitude. Comparison of the maximum value and location of the reversing orthogonal subsurface shear stress with solid ball data according to the Lundberg-Palmgren dynamic life theory predicts a 91.6 percent life reduction for the hollow ball contact. The use of the unidirectional subsurface shear stress results in a prediction of hollow ball contact life over 30 times the solid ball contact life. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Analysis of the Elastic Contact of a Hollow Ball With a Flat Plate | |
| type | Journal Paper | |
| journal volume | 92 | |
| journal issue | 1 | |
| journal title | Journal of Tribology | |
| identifier doi | 10.1115/1.3451298 | |
| journal fristpage | 138 | |
| journal lastpage | 142 | |
| identifier eissn | 1528-8897 | |
| keywords | Flat plates | |
| keywords | Stress | |
| keywords | Shear (Mechanics) | |
| keywords | Bending (Stress) | |
| keywords | Fatigue life | |
| keywords | Shapes AND Shells | |
| tree | Journal of Tribology:;1970:;volume( 092 ):;issue: 001 | |
| contenttype | Fulltext |