Enhancing mechanical properties of closed-cell lattice structure using various design variables
The toughness of closed-cell lattice structure was analysed through a set of variables, including the design of structure, lattice volume fraction, Young’s modulus, total elongation as well as ultimate tensile strength. The models were constructed in Abaqus to perform the simulations. The designs we...
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sg-ntu-dr.10356-1667492023-05-13T16:51:18Z Enhancing mechanical properties of closed-cell lattice structure using various design variables Chan, Jing Ling Lai Changquan School of Mechanical and Aerospace Engineering cqlai@ntu.edu.sg Engineering::Mechanical engineering The toughness of closed-cell lattice structure was analysed through a set of variables, including the design of structure, lattice volume fraction, Young’s modulus, total elongation as well as ultimate tensile strength. The models were constructed in Abaqus to perform the simulations. The designs were in cubic foam, octet foam and combined cubic and octet foam, which were known to store maximum amount of strain energy. The highest toughness exhibited by plate octet truss with octet foam in a lattice fraction of 0.53 was explained. Furthermore, the effects of each variable on toughness were compared. Among the material properties, ultimate tensile strength was suggested to be the most effective factor to improve the toughness of closed-cell lattice structure, followed by total elongation and Young’s modulus. It was observed that the highest toughness could fall on composite and pure materials. As such, this study aimed to investigate the critical point where the toughness of composite can surpass the pure materials. It was done by plotting the toughness against the ratio of UTS between hard and soft materials. The upper and lower critical ratio were obtained and verified against testing groups. Bachelor of Engineering (Mechanical Engineering) 2023-05-11T13:25:00Z 2023-05-11T13:25:00Z 2023 Final Year Project (FYP) Chan, J. L. (2023). Enhancing mechanical properties of closed-cell lattice structure using various design variables. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/166749 https://hdl.handle.net/10356/166749 en A179 application/pdf Nanyang Technological University |
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Engineering::Mechanical engineering Chan, Jing Ling Enhancing mechanical properties of closed-cell lattice structure using various design variables |
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The toughness of closed-cell lattice structure was analysed through a set of variables, including the design of structure, lattice volume fraction, Young’s modulus, total elongation as well as ultimate tensile strength. The models were constructed in Abaqus to perform the simulations. The designs were in cubic foam, octet foam and combined cubic and octet foam, which were known to store maximum amount of strain energy. The highest toughness exhibited by plate octet truss with octet foam in a lattice fraction of 0.53 was explained. Furthermore, the effects of each variable on toughness were compared. Among the material properties, ultimate tensile strength was suggested to be the most effective factor to improve the toughness of closed-cell lattice structure, followed by total elongation and Young’s modulus. It was observed that the highest toughness could fall on composite and pure materials. As such, this study aimed to investigate the critical point where the toughness of composite can surpass the pure materials. It was done by plotting the toughness against the ratio of UTS between hard and soft materials. The upper and lower critical ratio were obtained and verified against testing groups. |
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Lai Changquan |
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Lai Changquan Chan, Jing Ling |
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Final Year Project |
author |
Chan, Jing Ling |
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Chan, Jing Ling |
title |
Enhancing mechanical properties of closed-cell lattice structure using various design variables |
title_short |
Enhancing mechanical properties of closed-cell lattice structure using various design variables |
title_full |
Enhancing mechanical properties of closed-cell lattice structure using various design variables |
title_fullStr |
Enhancing mechanical properties of closed-cell lattice structure using various design variables |
title_full_unstemmed |
Enhancing mechanical properties of closed-cell lattice structure using various design variables |
title_sort |
enhancing mechanical properties of closed-cell lattice structure using various design variables |
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Nanyang Technological University |
publishDate |
2023 |
url |
https://hdl.handle.net/10356/166749 |
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1770566542878048256 |