Quantifying mechanical properties of material extrusion fabricated lattice structures based on semi-rigid joint frame formulation
This paper presents a new numerical modeling scheme based on the semi-rigid joint frame element formulation for lattice structures fabricated using material extrusion. The proposed scheme has two main elements. First, a modified semi-rigid joint frame element is formulated in order to model struts i...
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| Other Authors: | |
| Format: | Conference Paper |
| Language: | English |
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2016
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| Online Access: | https://hdl.handle.net/10356/84397 http://hdl.handle.net/10220/41762 |
| _version_ | 1826109650543575040 |
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| author | Park, Sang-In Rosen, David W. |
| author2 | Proceedings of the 2nd International Conference on Progress in Additive Manufacturing (Pro-AM 2016) |
| author_facet | Proceedings of the 2nd International Conference on Progress in Additive Manufacturing (Pro-AM 2016) Park, Sang-In Rosen, David W. |
| author_sort | Park, Sang-In |
| collection | NTU |
| description | This paper presents a new numerical modeling scheme based on the semi-rigid joint frame element formulation for lattice structures fabricated using material extrusion. The proposed scheme has two main elements. First, a modified semi-rigid joint frame element is formulated in order to model struts in lattice structures. Second, a voxel model is developed by simulating the material deposition process; the resulting model geometry is similar to that of the fabricated part. Using this model, effective structural parameters, such as effective strut and joint size and effective joint stiffness, can be computed. Parametric studies were conducted to examine manufacturing effects on the structural parameters. Estimated mechanical properties utilizing the proposed modeling approach are compared with tensile test results for three types of lattice structures. Results demonstrate good predictive capability of the proposed modeling approach. |
| first_indexed | 2024-10-01T02:21:43Z |
| format | Conference Paper |
| id | ntu-10356/84397 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:21:43Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-10356/843972020-09-24T20:10:27Z Quantifying mechanical properties of material extrusion fabricated lattice structures based on semi-rigid joint frame formulation Park, Sang-In Rosen, David W. Proceedings of the 2nd International Conference on Progress in Additive Manufacturing (Pro-AM 2016) Singapore Centre for 3D Printing Material extrusion additive manufacturing Semi-rigid joint frame This paper presents a new numerical modeling scheme based on the semi-rigid joint frame element formulation for lattice structures fabricated using material extrusion. The proposed scheme has two main elements. First, a modified semi-rigid joint frame element is formulated in order to model struts in lattice structures. Second, a voxel model is developed by simulating the material deposition process; the resulting model geometry is similar to that of the fabricated part. Using this model, effective structural parameters, such as effective strut and joint size and effective joint stiffness, can be computed. Parametric studies were conducted to examine manufacturing effects on the structural parameters. Estimated mechanical properties utilizing the proposed modeling approach are compared with tensile test results for three types of lattice structures. Results demonstrate good predictive capability of the proposed modeling approach. Published version 2016-12-08T08:13:48Z 2019-12-06T15:44:19Z 2016-12-08T08:13:48Z 2019-12-06T15:44:19Z 2016 Conference Paper Park, S.-I., & Rosen, D. W. (2016). Quantifying mechanical properties of material extrusion fabricated lattice structures based on semi-rigid joint frame formulation. Proceedings of the 2nd International Conference on Progress in Additive Manufacturing (Pro-AM 2016), 222-227. https://hdl.handle.net/10356/84397 http://hdl.handle.net/10220/41762 en © 2016 by Pro-AM 2016 Organizers. Published by Research Publishing, Singapore 6 p. application/pdf |
| spellingShingle | Material extrusion additive manufacturing Semi-rigid joint frame Park, Sang-In Rosen, David W. Quantifying mechanical properties of material extrusion fabricated lattice structures based on semi-rigid joint frame formulation |
| title | Quantifying mechanical properties of material extrusion fabricated lattice structures based on semi-rigid joint frame formulation |
| title_full | Quantifying mechanical properties of material extrusion fabricated lattice structures based on semi-rigid joint frame formulation |
| title_fullStr | Quantifying mechanical properties of material extrusion fabricated lattice structures based on semi-rigid joint frame formulation |
| title_full_unstemmed | Quantifying mechanical properties of material extrusion fabricated lattice structures based on semi-rigid joint frame formulation |
| title_short | Quantifying mechanical properties of material extrusion fabricated lattice structures based on semi-rigid joint frame formulation |
| title_sort | quantifying mechanical properties of material extrusion fabricated lattice structures based on semi rigid joint frame formulation |
| topic | Material extrusion additive manufacturing Semi-rigid joint frame |
| url | https://hdl.handle.net/10356/84397 http://hdl.handle.net/10220/41762 |
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