MODELING AND ANALYSIS OF THE LIMIT BENDING-RADIUS FOR STRAIGHTENING A THIN-WALLED TUBE WITH EQUAL CURVATURE
The limit bending-radius as the main straightening technical parameter,decides the structure of equipment and the quality of products for straightening thin-walled tubes with equal curvature,however,it is usually carried out based on the experiential data and chart by skilled labourers,whose art is...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2015-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2015.04.013 |
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| _version_ | 1841534682514063360 |
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| author | ZHANG ZiQian YAN YunHui YANG HuiLin WANG Lei |
| author_facet | ZHANG ZiQian YAN YunHui YANG HuiLin WANG Lei |
| author_sort | ZHANG ZiQian |
| collection | DOAJ |
| description | The limit bending-radius as the main straightening technical parameter,decides the structure of equipment and the quality of products for straightening thin-walled tubes with equal curvature,however,it is usually carried out based on the experiential data and chart by skilled labourers,whose art is based on long experience and experiments,the special mathematical model of the limit bending-radius is immediately necessary. Therefore,by means of the membrane shell theory and it’s relevant hypothesis the stress-strain state is proposed firstly,and based on plastic incremental theory,the limit bending-radius model for the prediction of diffuse plastic instability under pure bending is derived using Swift’s criterion. In order to certify whether it is correct,we have done the dynamic simulation by FEA,the results have shown that the model is approximate correct,finally the influencing factors of the limit bending-radius are analyzed qualitatively,this paper can also provide the basis for optimizing straightening technical parameters and completing the theory of thin-walled tube straightening. |
| format | Article |
| id | doaj-art-6d8bc17779654df887271f4278789b0d |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2015-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-6d8bc17779654df887271f4278789b0d2025-01-15T02:38:04ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692015-01-013765165630592062MODELING AND ANALYSIS OF THE LIMIT BENDING-RADIUS FOR STRAIGHTENING A THIN-WALLED TUBE WITH EQUAL CURVATUREZHANG ZiQianYAN YunHuiYANG HuiLinWANG LeiThe limit bending-radius as the main straightening technical parameter,decides the structure of equipment and the quality of products for straightening thin-walled tubes with equal curvature,however,it is usually carried out based on the experiential data and chart by skilled labourers,whose art is based on long experience and experiments,the special mathematical model of the limit bending-radius is immediately necessary. Therefore,by means of the membrane shell theory and it’s relevant hypothesis the stress-strain state is proposed firstly,and based on plastic incremental theory,the limit bending-radius model for the prediction of diffuse plastic instability under pure bending is derived using Swift’s criterion. In order to certify whether it is correct,we have done the dynamic simulation by FEA,the results have shown that the model is approximate correct,finally the influencing factors of the limit bending-radius are analyzed qualitatively,this paper can also provide the basis for optimizing straightening technical parameters and completing the theory of thin-walled tube straightening.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2015.04.013Thin-walled tubeEqual curvature straighteningLimit bending-radiusTensile instability |
| spellingShingle | ZHANG ZiQian YAN YunHui YANG HuiLin WANG Lei MODELING AND ANALYSIS OF THE LIMIT BENDING-RADIUS FOR STRAIGHTENING A THIN-WALLED TUBE WITH EQUAL CURVATURE Jixie qiangdu Thin-walled tube Equal curvature straightening Limit bending-radius Tensile instability |
| title | MODELING AND ANALYSIS OF THE LIMIT BENDING-RADIUS FOR STRAIGHTENING A THIN-WALLED TUBE WITH EQUAL CURVATURE |
| title_full | MODELING AND ANALYSIS OF THE LIMIT BENDING-RADIUS FOR STRAIGHTENING A THIN-WALLED TUBE WITH EQUAL CURVATURE |
| title_fullStr | MODELING AND ANALYSIS OF THE LIMIT BENDING-RADIUS FOR STRAIGHTENING A THIN-WALLED TUBE WITH EQUAL CURVATURE |
| title_full_unstemmed | MODELING AND ANALYSIS OF THE LIMIT BENDING-RADIUS FOR STRAIGHTENING A THIN-WALLED TUBE WITH EQUAL CURVATURE |
| title_short | MODELING AND ANALYSIS OF THE LIMIT BENDING-RADIUS FOR STRAIGHTENING A THIN-WALLED TUBE WITH EQUAL CURVATURE |
| title_sort | modeling and analysis of the limit bending radius for straightening a thin walled tube with equal curvature |
| topic | Thin-walled tube Equal curvature straightening Limit bending-radius Tensile instability |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2015.04.013 |
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