Automatic adaptive FE analysis of thin-walled structures using 3D solid elements
In this study, a new automatic adaptive refinement procedure for thin-walled structures (TWS) using 3D solid elements is suggested. This procedure employs a specially designed superconvergent patch recovery (SPR) procedure for stress recovery, the Zienkiewicz and Zhu (Z-Z) error estimator for the a...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2014
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| Online Access: | https://hdl.handle.net/10356/80053 http://hdl.handle.net/10220/19307 |
| _version_ | 1824454436327522304 |
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| author | Lee, Chi King Xu, Q. X. |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Lee, Chi King Xu, Q. X. |
| author_sort | Lee, Chi King |
| collection | NTU |
| description | In this study, a new automatic adaptive refinement procedure for thin-walled structures (TWS) using 3D solid elements is suggested. This procedure employs a specially designed
superconvergent patch recovery (SPR) procedure for stress recovery, the Zienkiewicz and Zhu (Z-Z) error estimator for the a posteriori error estimation, a new refinement strategy for
new element size prediction and a special mesh generator for adaptive mesh generation. The proposed procedure is different from other schemes in such a way that the problem domain is separated into two distinct parts: the shell part and the junction part. For stress recovery and error estimation in the shell part, special nodal coordinate systems are used and the stress field is separated into two components. For the refinement strategy, different procedures are employed for the estimation of new element sizes in the shell and the junction parts.
Numerical examples are given to validate the effectiveness of the suggested procedure. It is found that by using the suggested refinement procedure, when comparing with uniform
refinement, higher convergences rate were achieved and more accurate final solutions were obtained by using fewer of degree of freedoms and less amount of computational time. |
| first_indexed | 2025-02-19T03:22:17Z |
| format | Journal Article |
| id | ntu-10356/80053 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:22:17Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/800532020-03-07T11:43:31Z Automatic adaptive FE analysis of thin-walled structures using 3D solid elements Lee, Chi King Xu, Q. X. School of Civil and Environmental Engineering DRNTU::Engineering::Civil engineering::Structures and design In this study, a new automatic adaptive refinement procedure for thin-walled structures (TWS) using 3D solid elements is suggested. This procedure employs a specially designed superconvergent patch recovery (SPR) procedure for stress recovery, the Zienkiewicz and Zhu (Z-Z) error estimator for the a posteriori error estimation, a new refinement strategy for new element size prediction and a special mesh generator for adaptive mesh generation. The proposed procedure is different from other schemes in such a way that the problem domain is separated into two distinct parts: the shell part and the junction part. For stress recovery and error estimation in the shell part, special nodal coordinate systems are used and the stress field is separated into two components. For the refinement strategy, different procedures are employed for the estimation of new element sizes in the shell and the junction parts. Numerical examples are given to validate the effectiveness of the suggested procedure. It is found that by using the suggested refinement procedure, when comparing with uniform refinement, higher convergences rate were achieved and more accurate final solutions were obtained by using fewer of degree of freedoms and less amount of computational time. Accepted version 2014-05-12T01:12:22Z 2019-12-06T13:39:34Z 2014-05-12T01:12:22Z 2019-12-06T13:39:34Z 2008 2008 Journal Article Lee, C. K., & Xu, Q. X. (2008). Automatic adaptive FE analysis of thin-walled structures using 3D solid elements. International Journal for Numerical Methods in Engineering, 76(2), 183-229. 0029-5981 https://hdl.handle.net/10356/80053 http://hdl.handle.net/10220/19307 10.1002/nme.2315 en International journal for numerical methods in engineering © 2008 John Wiley & Sons, Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by International Journal for Numerical Methods in Engineering, John Wiley & Sons, Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1002/nme.2315]. 49 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Civil engineering::Structures and design Lee, Chi King Xu, Q. X. Automatic adaptive FE analysis of thin-walled structures using 3D solid elements |
| title | Automatic adaptive FE analysis of thin-walled structures using 3D solid elements |
| title_full | Automatic adaptive FE analysis of thin-walled structures using 3D solid elements |
| title_fullStr | Automatic adaptive FE analysis of thin-walled structures using 3D solid elements |
| title_full_unstemmed | Automatic adaptive FE analysis of thin-walled structures using 3D solid elements |
| title_short | Automatic adaptive FE analysis of thin-walled structures using 3D solid elements |
| title_sort | automatic adaptive fe analysis of thin walled structures using 3d solid elements |
| topic | DRNTU::Engineering::Civil engineering::Structures and design |
| url | https://hdl.handle.net/10356/80053 http://hdl.handle.net/10220/19307 |
| work_keys_str_mv | AT leechiking automaticadaptivefeanalysisofthinwalledstructuresusing3dsolidelements AT xuqx automaticadaptivefeanalysisofthinwalledstructuresusing3dsolidelements |