Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | Springer Nature Link |
|---|---|
| Author | Yang, He Ren, Ning Zhan, Mei Zhang, ZhiYong Qin, YaTao Jiang, HaoMin Diao, KeShan Chen, XinPing |
| Copyright Year | 2012 |
| Abstract | For a low carbon steel tube with small wall factor D/t and bending radius R, the over-thinning induced localized necking is one dominant failure in tube numerical control (NC) bending process, which strongly restricts the bendability limit of the tube. In addition, the deterioration of bendability of a tube is increased by the existence of the weak weld region. Therefore, an important issue is how to determinate and predict the welded tube bendability limit. In the present study, a finite element (FE) model with weld and subdivided heat affected zones under ABAQUS platform is employed to explore the deformation behaviors of welded tube NC bending. A localized necking criterion based on the critical thickness thinning is used to predict the critical principal strains, critical bending radius and burst location during the forming process. It is found that the failures always occur at the rigid supporting point of mandrel flexible balls near the tangent point at the outside of the bend, where the wall thickness of the tube is the lowest. The bending limit curves (BLCs) of the QSTE340 welded tube are obtained by shifting the standard shaped forming limit curve to the critical principal strains along the major strain axis. Comparison between the numerical and experimental results has shown that the BLC and critical bending radius predictions agree well with the experimental results. In addition, the effect of weld positions on BLC is discussed, the weld region shows an almost negligible effect on the forming limit at a non-critical location that is far away from the outside of the bend. However, when the weld is at the large tensile deformation region on the outside of the bend, a decrease of the forming limit strains is seen. |
| Starting Page | 2264 |
| Ending Page | 2277 |
| Page Count | 14 |
| File Format | |
| ISSN | 16747321 |
| Journal | Science in China Series E: Technological Sciences |
| Volume Number | 55 |
| Issue Number | 8 |
| e-ISSN | 18691900 |
| Language | English |
| Publisher | SP Science China Press |
| Publisher Date | 2012-04-11 |
| Publisher Place | Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | bendability limit welded tube NC bending FE simulation critical thickness thinning Engineering |
| Content Type | Text |
| Resource Type | Article |
| Subject | Engineering Materials Science |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|