Structural Performance Analysis of a Novel Pyramidal Cellular Core Obtained through a Mechanical Expansion Process
Stiff and strong yet lightweight cellular structures have become widely designed and used as cores for the construction of sandwich panels to reach high stiffness and strength to weight ratios. A low-density pyramidal cellular core has been proposed for investigation in this work. The novel core is...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-09-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/19/4264 |
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| author | Mihaela Iftimiciuc Simona Lache Per Wennhage Marian Nicolae Velea |
| author_facet | Mihaela Iftimiciuc Simona Lache Per Wennhage Marian Nicolae Velea |
| author_sort | Mihaela Iftimiciuc |
| collection | DOAJ |
| description | Stiff and strong yet lightweight cellular structures have become widely designed and used as cores for the construction of sandwich panels to reach high stiffness and strength to weight ratios. A low-density pyramidal cellular core has been proposed for investigation in this work. The novel core is manufactured from stainless steel sheet type 304 through a mechanical expansion procedure which is described in detail. The out-of-plane stiffness and strength performance is estimated by an analytical model which is successfully validated through experimental tests. A comparative study with other existing cellular core configurations made from other materials indicates an average performance behavior for the investigated structure. However, potential for a further structural performance increase is observed and discussed |
| first_indexed | 2024-03-10T16:04:45Z |
| format | Article |
| id | doaj.art-7e08f35551e54d14a9450645cc21df23 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T16:04:45Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-7e08f35551e54d14a9450645cc21df232023-11-20T14:59:53ZengMDPI AGMaterials1996-19442020-09-011319426410.3390/ma13194264Structural Performance Analysis of a Novel Pyramidal Cellular Core Obtained through a Mechanical Expansion ProcessMihaela Iftimiciuc0Simona Lache1Per Wennhage2Marian Nicolae Velea3Department of Mechanical Engineering, Transilvania University of Brasov, 500036 Brasov, RomaniaDepartment of Mechanical Engineering, Transilvania University of Brasov, 500036 Brasov, RomaniaDepartment of Engineering Mechanics, KTH Royal Institute of Technology, SE-100 44 Stockholm, SwedenDepartment of Mechanical Engineering, Transilvania University of Brasov, 500036 Brasov, RomaniaStiff and strong yet lightweight cellular structures have become widely designed and used as cores for the construction of sandwich panels to reach high stiffness and strength to weight ratios. A low-density pyramidal cellular core has been proposed for investigation in this work. The novel core is manufactured from stainless steel sheet type 304 through a mechanical expansion procedure which is described in detail. The out-of-plane stiffness and strength performance is estimated by an analytical model which is successfully validated through experimental tests. A comparative study with other existing cellular core configurations made from other materials indicates an average performance behavior for the investigated structure. However, potential for a further structural performance increase is observed and discussedhttps://www.mdpi.com/1996-1944/13/19/4264pyramidal cellular coreout-of-plane compressionmechanical expansionanalytical model |
| spellingShingle | Mihaela Iftimiciuc Simona Lache Per Wennhage Marian Nicolae Velea Structural Performance Analysis of a Novel Pyramidal Cellular Core Obtained through a Mechanical Expansion Process Materials pyramidal cellular core out-of-plane compression mechanical expansion analytical model |
| title | Structural Performance Analysis of a Novel Pyramidal Cellular Core Obtained through a Mechanical Expansion Process |
| title_full | Structural Performance Analysis of a Novel Pyramidal Cellular Core Obtained through a Mechanical Expansion Process |
| title_fullStr | Structural Performance Analysis of a Novel Pyramidal Cellular Core Obtained through a Mechanical Expansion Process |
| title_full_unstemmed | Structural Performance Analysis of a Novel Pyramidal Cellular Core Obtained through a Mechanical Expansion Process |
| title_short | Structural Performance Analysis of a Novel Pyramidal Cellular Core Obtained through a Mechanical Expansion Process |
| title_sort | structural performance analysis of a novel pyramidal cellular core obtained through a mechanical expansion process |
| topic | pyramidal cellular core out-of-plane compression mechanical expansion analytical model |
| url | https://www.mdpi.com/1996-1944/13/19/4264 |
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