Metallic perforated plate lattices with superior buckling strength
Plate lattices possess promising stiffness and yielding strength; however, their closed-cell topology dramatically increases the manufacturing difficulty. While introducing micro holes can effectively improve the manufacturability, design rationale to minimize the strength reduction induced by micro...
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-01-01
|
| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127524009195 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841553917870080000 |
|---|---|
| author | Lei Zhang Mingpei Cang Junhao Ding Winston Wai Shing Ma Xiangyang Zhu Yang Lu Xu Song Huachen Cui Michael Yu Wang |
| author_facet | Lei Zhang Mingpei Cang Junhao Ding Winston Wai Shing Ma Xiangyang Zhu Yang Lu Xu Song Huachen Cui Michael Yu Wang |
| author_sort | Lei Zhang |
| collection | DOAJ |
| description | Plate lattices possess promising stiffness and yielding strength; however, their closed-cell topology dramatically increases the manufacturing difficulty. While introducing micro holes can effectively improve the manufacturability, design rationale to minimize the strength reduction induced by micro holes remain elusive. In particular, low-density plate lattices are prone to buckling failure, and design optimization for buckling strength is of great importance. Here, we propose a design method for low-density perforated plate lattices to achieve superior buckling strength using a Rayleigh quotient based theoretical criteria to determine the optimized locations of micro holes. Through linear buckling and post-buckling analysis, we demonstrate that introducing micro holes at the proposed locations can increase the critical buckling stresses and maintain the post-buckling compressive strength compared with the unperforated plate lattices. Three representative perforated plate lattices with the relative density range of 5.6%∼37.1% were fabricated with micro laser powder bed fusion process. Compression testing results show that the proposed perforated plate lattices exhibit superior Young’s modulus and compressive strength over shell and truss lattices in the considered relative density range. |
| format | Article |
| id | doaj-art-bbea83e3cbdd41c68feee497d9aa1845 |
| institution | Kabale University |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-bbea83e3cbdd41c68feee497d9aa18452025-01-09T06:12:21ZengElsevierMaterials & Design0264-12752025-01-01249113544Metallic perforated plate lattices with superior buckling strengthLei Zhang0Mingpei Cang1Junhao Ding2Winston Wai Shing Ma3Xiangyang Zhu4Yang Lu5Xu Song6Huachen Cui7Michael Yu Wang8Meta Robotics Institute, Shanghai Jiao Tong University, Shanghai 200240, China; State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, ChinaSmart Manufacturing Thrust, Systems Hub, The Hong Kong University of Science and Technology (Guangzhou), Guangzhou, Guangdong 511458, China; Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, ChinaDepartment of Mechanical and Automation Engineering, Chinese University of Hong Kong, Shatin, Hong Kong, ChinaDepartment of Mechanical and Automation Engineering, Chinese University of Hong Kong, Shatin, Hong Kong, ChinaMeta Robotics Institute, Shanghai Jiao Tong University, Shanghai 200240, China; State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, ChinaDepartment of Mechanical Engineering, The University of Hong Kong, Hong Kong, ChinaDepartment of Mechanical and Automation Engineering, Chinese University of Hong Kong, Shatin, Hong Kong, ChinaSmart Manufacturing Thrust, Systems Hub, The Hong Kong University of Science and Technology (Guangzhou), Guangzhou, Guangdong 511458, China; Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, China; Corresponding authors.School of Engineering, Great Bay University, Songshan Lake, Dongguan, Guangdong 523808, China; Corresponding authors.Plate lattices possess promising stiffness and yielding strength; however, their closed-cell topology dramatically increases the manufacturing difficulty. While introducing micro holes can effectively improve the manufacturability, design rationale to minimize the strength reduction induced by micro holes remain elusive. In particular, low-density plate lattices are prone to buckling failure, and design optimization for buckling strength is of great importance. Here, we propose a design method for low-density perforated plate lattices to achieve superior buckling strength using a Rayleigh quotient based theoretical criteria to determine the optimized locations of micro holes. Through linear buckling and post-buckling analysis, we demonstrate that introducing micro holes at the proposed locations can increase the critical buckling stresses and maintain the post-buckling compressive strength compared with the unperforated plate lattices. Three representative perforated plate lattices with the relative density range of 5.6%∼37.1% were fabricated with micro laser powder bed fusion process. Compression testing results show that the proposed perforated plate lattices exhibit superior Young’s modulus and compressive strength over shell and truss lattices in the considered relative density range.http://www.sciencedirect.com/science/article/pii/S0264127524009195Plate latticeBuckling strengthPerforated plateLaser powder bed fusion |
| spellingShingle | Lei Zhang Mingpei Cang Junhao Ding Winston Wai Shing Ma Xiangyang Zhu Yang Lu Xu Song Huachen Cui Michael Yu Wang Metallic perforated plate lattices with superior buckling strength Materials & Design Plate lattice Buckling strength Perforated plate Laser powder bed fusion |
| title | Metallic perforated plate lattices with superior buckling strength |
| title_full | Metallic perforated plate lattices with superior buckling strength |
| title_fullStr | Metallic perforated plate lattices with superior buckling strength |
| title_full_unstemmed | Metallic perforated plate lattices with superior buckling strength |
| title_short | Metallic perforated plate lattices with superior buckling strength |
| title_sort | metallic perforated plate lattices with superior buckling strength |
| topic | Plate lattice Buckling strength Perforated plate Laser powder bed fusion |
| url | http://www.sciencedirect.com/science/article/pii/S0264127524009195 |
| work_keys_str_mv | AT leizhang metallicperforatedplatelatticeswithsuperiorbucklingstrength AT mingpeicang metallicperforatedplatelatticeswithsuperiorbucklingstrength AT junhaoding metallicperforatedplatelatticeswithsuperiorbucklingstrength AT winstonwaishingma metallicperforatedplatelatticeswithsuperiorbucklingstrength AT xiangyangzhu metallicperforatedplatelatticeswithsuperiorbucklingstrength AT yanglu metallicperforatedplatelatticeswithsuperiorbucklingstrength AT xusong metallicperforatedplatelatticeswithsuperiorbucklingstrength AT huachencui metallicperforatedplatelatticeswithsuperiorbucklingstrength AT michaelyuwang metallicperforatedplatelatticeswithsuperiorbucklingstrength |