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Y. Hua, G. Milani, "Automatic Remeshing Procedure for Limit Analysis with Unstructured Triangular Mesh", in P. Iványi, J. Kruis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Computational Structures Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 9, Paper 9.1, 2024, doi:10.4203/ccc.9.9.1

Keywords: limit analysis, remeshing, mesh dependence, strip footing, masonry arch bridges, collapse performance.

Abstract

This paper presents a novel remeshing procedure for limit analysis with a more general mesh configuration. The element with high dissipation in each analysis step will be refined through three schemes. A benchmark study of the strip footing prob-lem is first carried out to compare the effect of these three refinements, through which the best refinement approach is concluded. Then, in the collapse analysis of Prestwood Bridge, this best refinement is employed to remesh the elements in the backfill region to test the robustness of the remeshing procedure in the practical scenario. The results show that the proposed remeshing procedure for the limit analysis can effectively reduce the mesh dependence of the prediction. The load prediction significantly decreases after iterative refinements in the two considered case studies. According to the benchmark study of strip footing, the edge-split ap-proach has a prominently good performance among the three considered refine-ment, giving a precise final prediction with only 8 – 15% computational budget of the other two methods. The performance of this approach is also fair when applied to analyzing Prestwood Bridge while the explosion of the time consumption proba-bly appears in the later iterations.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 9 PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY Edited by: P. Iványi, J. Kruis and B.H.V. Topping Paper 9.1 Automatic Remeshing Procedure for Limit Analysis with Unstructured Triangular Mesh Y. Hua and G. Milani Department of Architecture, Built Environment and Construction Engineering, Politecnico di Milano, Italia doi:10.4203/ccc.9.9.1 Full Bibliographic Reference for this paper Y. Hua, G. Milani, "Automatic Remeshing Procedure for Limit Analysis with Unstructured Triangular Mesh", in P. Iványi, J. Kruis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Computational Structures Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 9, Paper 9.1, 2024, doi:10.4203/ccc.9.9.1 Keywords: limit analysis, remeshing, mesh dependence, strip footing, masonry arch bridges, collapse performance. Abstract This paper presents a novel remeshing procedure for limit analysis with a more general mesh configuration. The element with high dissipation in each analysis step will be refined through three schemes. A benchmark study of the strip footing prob-lem is first carried out to compare the effect of these three refinements, through which the best refinement approach is concluded. Then, in the collapse analysis of Prestwood Bridge, this best refinement is employed to remesh the elements in the backfill region to test the robustness of the remeshing procedure in the practical scenario. The results show that the proposed remeshing procedure for the limit analysis can effectively reduce the mesh dependence of the prediction. The load prediction significantly decreases after iterative refinements in the two considered case studies. According to the benchmark study of strip footing, the edge-split ap-proach has a prominently good performance among the three considered refine-ment, giving a precise final prediction with only 8 – 15% computational budget of the other two methods. The performance of this approach is also fair when applied to analyzing Prestwood Bridge while the explosion of the time consumption proba-bly appears in the later iterations. download the full-text of this paper (PDF, 14 pages, 1442 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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