Buckling behavior of additively manufactured cellular columns: Experimental and simulation validation
Lattice structures have been used in a variety of engineering applications in aerospace, automobile and biomedical applications. In this study, the buckling analysis of additively manufactured cellular columns was conducted. The effect of unit cell size and height of the column on the critical buckl...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-01-01
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| Series: | Materials & Design |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127519307877 |
| _version_ | 1819142287848898560 |
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| author | Aamer Nazir Jeng-Ywan Jeng |
| author_facet | Aamer Nazir Jeng-Ywan Jeng |
| author_sort | Aamer Nazir |
| collection | DOAJ |
| description | Lattice structures have been used in a variety of engineering applications in aerospace, automobile and biomedical applications. In this study, the buckling analysis of additively manufactured cellular columns was conducted. The effect of unit cell size and height of the column on the critical buckling load and post-bucking behavior of compressive columns constructed with periodic cubic structure was investigated using experimental and simulation-based studies. The results exhibited that the unit cell size and cellular column height significantly affect the critical buckling load while the total mass, volume fraction, and column dimensions remain the same. The critical buckling load increases with the increase of unit cell size or decrease of cellular column height. The largest unit cell size (8.72 mm) has the maximum critical buckling load, followed by unit cell sizes of 4.74 mm and 2.5 mm, respectively. Moreover, the failure of cellular columns having larger height-to-width (h/w) ratio, happens due to global buckling, whereas, local bucking dominates for smaller h/w ratios. Additionally, it was found that the unit cell size significantly affects on the post-buckling behavior; the samples of larger unit cells failed in a brittle manner and this trend continuously changed from brittle to ductile as the unit cell size reduces. Keywords: Additive manufacturing, Lattice structure, design and optimization, Unit cell, Critical buckling load, Post-buckling behavior |
| first_indexed | 2024-12-22T12:07:57Z |
| format | Article |
| id | doaj.art-d64aa8469bf74dfd94bf9425f13b5901 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-22T12:07:57Z |
| publishDate | 2020-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-d64aa8469bf74dfd94bf9425f13b59012022-12-21T18:26:23ZengElsevierMaterials & Design0264-12752020-01-01186Buckling behavior of additively manufactured cellular columns: Experimental and simulation validationAamer Nazir0Jeng-Ywan Jeng1High Speed 3D Printing Research Center, National Taiwan University of Science and Technology, No. 43, Section 4, Keelung Road, Taipei 106, Taiwan, ROC; Department of Mechanical Engineering, National Taiwan University of Science and Technology, No. 43, Section 4, Keelung Road, Taipei 106, Taiwan, ROCCorresponding author at: High Speed 3D Printing Research Center, National Taiwan University of Science and Technology, No. 43, Section 4, Keelung Road, Taipei 106, Taiwan, ROC.; High Speed 3D Printing Research Center, National Taiwan University of Science and Technology, No. 43, Section 4, Keelung Road, Taipei 106, Taiwan, ROC; Department of Mechanical Engineering, National Taiwan University of Science and Technology, No. 43, Section 4, Keelung Road, Taipei 106, Taiwan, ROCLattice structures have been used in a variety of engineering applications in aerospace, automobile and biomedical applications. In this study, the buckling analysis of additively manufactured cellular columns was conducted. The effect of unit cell size and height of the column on the critical buckling load and post-bucking behavior of compressive columns constructed with periodic cubic structure was investigated using experimental and simulation-based studies. The results exhibited that the unit cell size and cellular column height significantly affect the critical buckling load while the total mass, volume fraction, and column dimensions remain the same. The critical buckling load increases with the increase of unit cell size or decrease of cellular column height. The largest unit cell size (8.72 mm) has the maximum critical buckling load, followed by unit cell sizes of 4.74 mm and 2.5 mm, respectively. Moreover, the failure of cellular columns having larger height-to-width (h/w) ratio, happens due to global buckling, whereas, local bucking dominates for smaller h/w ratios. Additionally, it was found that the unit cell size significantly affects on the post-buckling behavior; the samples of larger unit cells failed in a brittle manner and this trend continuously changed from brittle to ductile as the unit cell size reduces. Keywords: Additive manufacturing, Lattice structure, design and optimization, Unit cell, Critical buckling load, Post-buckling behaviorhttp://www.sciencedirect.com/science/article/pii/S0264127519307877 |
| spellingShingle | Aamer Nazir Jeng-Ywan Jeng Buckling behavior of additively manufactured cellular columns: Experimental and simulation validation Materials & Design |
| title | Buckling behavior of additively manufactured cellular columns: Experimental and simulation validation |
| title_full | Buckling behavior of additively manufactured cellular columns: Experimental and simulation validation |
| title_fullStr | Buckling behavior of additively manufactured cellular columns: Experimental and simulation validation |
| title_full_unstemmed | Buckling behavior of additively manufactured cellular columns: Experimental and simulation validation |
| title_short | Buckling behavior of additively manufactured cellular columns: Experimental and simulation validation |
| title_sort | buckling behavior of additively manufactured cellular columns experimental and simulation validation |
| url | http://www.sciencedirect.com/science/article/pii/S0264127519307877 |
| work_keys_str_mv | AT aamernazir bucklingbehaviorofadditivelymanufacturedcellularcolumnsexperimentalandsimulationvalidation AT jengywanjeng bucklingbehaviorofadditivelymanufacturedcellularcolumnsexperimentalandsimulationvalidation |