STUDY ON FATIGUE LIFE OF HYDRAULIC TENSION BAR OF SHEARERS
In order to study on the loading spectrum and fatigue life of hydraulic tension bars on shears,this paper solves the spatial mechanic problems of hydraulic tension bars by constructing spatial mechanical model and using partitioned matrix element segmentation method. Using experiment to test the ope...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2018-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2018.02.032 |
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| author | HAO ZhiYong LEI YaoLong MAO Jun ZHANG FengJia |
| author_facet | HAO ZhiYong LEI YaoLong MAO Jun ZHANG FengJia |
| author_sort | HAO ZhiYong |
| collection | DOAJ |
| description | In order to study on the loading spectrum and fatigue life of hydraulic tension bars on shears,this paper solves the spatial mechanic problems of hydraulic tension bars by constructing spatial mechanical model and using partitioned matrix element segmentation method. Using experiment to test the operating load of hydraulic tension bars,this paper chooses the worst loaded one to simulate the fatigue life. The result indicates that the stress concentration part of hydraulic tension bar locates on the root of the first screw thread. The maximum stress point is close to the end point at the root of the first thread tooth,of which the number is 1386 MPa,the triple thread teeth bear over 50% of the full load; the position on which fatigue crack occurs first is at the root of the thread teeth in the screw part of the hydraulic tension bar; assuming that the daily continuously working time for shear is 12 hours,the hydraulic tension bar starts to crack at the 53 rdday. This research provides load data for hydraulic tension bar structural design,and also offers a new method of operating load monitor for shears. |
| format | Article |
| id | doaj-art-2d075ca46e774bfcbf168e6505149022 |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2018-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-2d075ca46e774bfcbf168e65051490222025-01-15T02:32:35ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692018-01-014045546130601500STUDY ON FATIGUE LIFE OF HYDRAULIC TENSION BAR OF SHEARERSHAO ZhiYongLEI YaoLongMAO JunZHANG FengJiaIn order to study on the loading spectrum and fatigue life of hydraulic tension bars on shears,this paper solves the spatial mechanic problems of hydraulic tension bars by constructing spatial mechanical model and using partitioned matrix element segmentation method. Using experiment to test the operating load of hydraulic tension bars,this paper chooses the worst loaded one to simulate the fatigue life. The result indicates that the stress concentration part of hydraulic tension bar locates on the root of the first screw thread. The maximum stress point is close to the end point at the root of the first thread tooth,of which the number is 1386 MPa,the triple thread teeth bear over 50% of the full load; the position on which fatigue crack occurs first is at the root of the thread teeth in the screw part of the hydraulic tension bar; assuming that the daily continuously working time for shear is 12 hours,the hydraulic tension bar starts to crack at the 53 rdday. This research provides load data for hydraulic tension bar structural design,and also offers a new method of operating load monitor for shears.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2018.02.032ShearerHydraulic tension barLoading spectrumStress contourFatigue life |
| spellingShingle | HAO ZhiYong LEI YaoLong MAO Jun ZHANG FengJia STUDY ON FATIGUE LIFE OF HYDRAULIC TENSION BAR OF SHEARERS Jixie qiangdu Shearer Hydraulic tension bar Loading spectrum Stress contour Fatigue life |
| title | STUDY ON FATIGUE LIFE OF HYDRAULIC TENSION BAR OF SHEARERS |
| title_full | STUDY ON FATIGUE LIFE OF HYDRAULIC TENSION BAR OF SHEARERS |
| title_fullStr | STUDY ON FATIGUE LIFE OF HYDRAULIC TENSION BAR OF SHEARERS |
| title_full_unstemmed | STUDY ON FATIGUE LIFE OF HYDRAULIC TENSION BAR OF SHEARERS |
| title_short | STUDY ON FATIGUE LIFE OF HYDRAULIC TENSION BAR OF SHEARERS |
| title_sort | study on fatigue life of hydraulic tension bar of shearers |
| topic | Shearer Hydraulic tension bar Loading spectrum Stress contour Fatigue life |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2018.02.032 |
| work_keys_str_mv | AT haozhiyong studyonfatiguelifeofhydraulictensionbarofshearers AT leiyaolong studyonfatiguelifeofhydraulictensionbarofshearers AT maojun studyonfatiguelifeofhydraulictensionbarofshearers AT zhangfengjia studyonfatiguelifeofhydraulictensionbarofshearers |