Academic Journal
Optimal design of three-dimensional non-uniform nylon lattice structures for selective laser sintering manufacturing
| العنوان: | Optimal design of three-dimensional non-uniform nylon lattice structures for selective laser sintering manufacturing |
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| المؤلفون: | Xin Jin, Guo Xi Li, Meng Zhang |
| المصدر: | Advances in Mechanical Engineering, Vol 10 (2018) |
| بيانات النشر: | SAGE Publishing, 2018. |
| سنة النشر: | 2018 |
| المجموعة: | LCC:Mechanical engineering and machinery |
| مصطلحات موضوعية: | Mechanical engineering and machinery, TJ1-1570 |
| الوصف: | As a kind of novel multifunctional structure with three-dimensional pores characterized by low relative density, lattice structures can attain a lightweight design while maintaining high specific mechanical properties in three-dimensional solid structures. Focusing on the challenge of finding the optimal design of lattice structures in the design object, a design and modeling method of non-uniform three-dimensional lattice structures is proposed while ensuring the selective laser sintering manufacturability. Optimization for cell type, cell size, and strut size distribution of lattices is specified with the mechanical properties analyzed and the material model calculated beforehand. The manufacturing constraints are analyzed and expressed in topology optimization and the optimal distribution of topology optimization results is mapped to the strut size distribution of lattice cells. The rapid and automatic computer-aided design modeling of optimized structures is realized by the parametric definition and assembling of lattice components. Finally, the non-uniform structures are successfully manufactured by selective laser sintering and it is shown by means of finite element analysis and experiments that the proposed design approach can improve the mechanical performance compared to the uniform lattice structure under the same weight reduction. And for the design object in this study, body-centered structure with cell size a = 4 . 5 mm is chosen as the optimal cell type and cell size under the given selective laser sintering manufacturing constraints. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1687-8140 16878140 |
| Relation: | https://doaj.org/toc/1687-8140 |
| DOI: | 10.1177/1687814018790833 |
| URL الوصول: | https://doaj.org/article/474a6b04f11344d38071f9e2c438dbf7 |
| رقم الانضمام: | edsdoj.474a6b04f11344d38071f9e2c438dbf7 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 16878140 |
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| DOI: | 10.1177/1687814018790833 |