Multiple strut-deformation patterns based analytical elastic modulus of sandwich BCC lattices
This paper proposed an analytical methodology to predict the mechanical properties of sandwich body-centred cubic (BCC) lattice structures. Based on the Timoshenko beam theory, the multiple strut-deformation patterns were first introduced in the derivations of the elastic constants. The propagation...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-11-01
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| Series: | Materials & Design |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127519303545 |
| _version_ | 1818965976987729920 |
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| author | Yunhui Yang Meijuan Shan Libin Zhao Dexuan Qi Jianyu Zhang |
| author_facet | Yunhui Yang Meijuan Shan Libin Zhao Dexuan Qi Jianyu Zhang |
| author_sort | Yunhui Yang |
| collection | DOAJ |
| description | This paper proposed an analytical methodology to predict the mechanical properties of sandwich body-centred cubic (BCC) lattice structures. Based on the Timoshenko beam theory, the multiple strut-deformation patterns were first introduced in the derivations of the elastic constants. The propagation of strut-deformation patterns was explained to identify the borders of parts with different elastic constants. The analytical elastic moduli of three types of sandwich BCC lattices were derived. Finite element models of the BCC lattice structures were established to estimate the deviations between the numerical and analytical solutions. Cubic sandwich BCC lattice structures were printed using titanium alloy (TC 4) as constitutive material, and corresponding compression experiments were conducted to validate the analytical and numerical calculations. Excellent agreements were observed among the analytical, numerical and experimental results. Keywords: BCC lattice structures, Multiple strut-deformation patterns, Propagation, Compression experiments |
| first_indexed | 2024-12-20T13:25:34Z |
| format | Article |
| id | doaj.art-3000d3e1d22b42eda2f9cbda6429318e |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-20T13:25:34Z |
| publishDate | 2019-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-3000d3e1d22b42eda2f9cbda6429318e2022-12-21T19:39:16ZengElsevierMaterials & Design0264-12752019-11-01181Multiple strut-deformation patterns based analytical elastic modulus of sandwich BCC latticesYunhui Yang0Meijuan Shan1Libin Zhao2Dexuan Qi3Jianyu Zhang4School of Astronautics, Beihang University, Beijing 100191, PR China; Key Laboratory of Spacecraft Design Optimization and Dynamic Simulation Technologies, Minisitry of Education, Beijing 100191, PR ChinaSchool of Astronautics, Beihang University, Beijing 100191, PR China; Key Laboratory of Spacecraft Design Optimization and Dynamic Simulation Technologies, Minisitry of Education, Beijing 100191, PR ChinaSchool of Astronautics, Beihang University, Beijing 100191, PR China; Key Laboratory of Spacecraft Design Optimization and Dynamic Simulation Technologies, Minisitry of Education, Beijing 100191, PR China; Correspondence to: L. Zhao, School of Astronautics, Beihang University, Beijing 100191, PR China.Aero-polytechnology Establishment, Aviation Industry Corporation of China, Beijing 100191, PR ChinaCollege of Aerospace Engineering, Chongqing University, Chongqing 400044, PR China; Corresponding author.This paper proposed an analytical methodology to predict the mechanical properties of sandwich body-centred cubic (BCC) lattice structures. Based on the Timoshenko beam theory, the multiple strut-deformation patterns were first introduced in the derivations of the elastic constants. The propagation of strut-deformation patterns was explained to identify the borders of parts with different elastic constants. The analytical elastic moduli of three types of sandwich BCC lattices were derived. Finite element models of the BCC lattice structures were established to estimate the deviations between the numerical and analytical solutions. Cubic sandwich BCC lattice structures were printed using titanium alloy (TC 4) as constitutive material, and corresponding compression experiments were conducted to validate the analytical and numerical calculations. Excellent agreements were observed among the analytical, numerical and experimental results. Keywords: BCC lattice structures, Multiple strut-deformation patterns, Propagation, Compression experimentshttp://www.sciencedirect.com/science/article/pii/S0264127519303545 |
| spellingShingle | Yunhui Yang Meijuan Shan Libin Zhao Dexuan Qi Jianyu Zhang Multiple strut-deformation patterns based analytical elastic modulus of sandwich BCC lattices Materials & Design |
| title | Multiple strut-deformation patterns based analytical elastic modulus of sandwich BCC lattices |
| title_full | Multiple strut-deformation patterns based analytical elastic modulus of sandwich BCC lattices |
| title_fullStr | Multiple strut-deformation patterns based analytical elastic modulus of sandwich BCC lattices |
| title_full_unstemmed | Multiple strut-deformation patterns based analytical elastic modulus of sandwich BCC lattices |
| title_short | Multiple strut-deformation patterns based analytical elastic modulus of sandwich BCC lattices |
| title_sort | multiple strut deformation patterns based analytical elastic modulus of sandwich bcc lattices |
| url | http://www.sciencedirect.com/science/article/pii/S0264127519303545 |
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