On the dynamic performance of additively manufactured visco-elastic meta-materials
Additive manufacturing (AM) has revolutionized the production of structures with tailored material properties, including elastomer polyurethanes (EPU) which exhibit exceptional mechanical performance. EPU possesses unique characteristics, such as high elongation at break, efficient energy dissipatio...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
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Elsevier
2024
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| _version_ | 1811139852012355584 |
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| author | Le Barbenchon, L Lißner, M |
| author_facet | Le Barbenchon, L Lißner, M |
| author_sort | Le Barbenchon, L |
| collection | OXFORD |
| description | Additive manufacturing (AM) has revolutionized the production of structures with tailored material properties, including elastomer polyurethanes (EPU) which exhibit exceptional mechanical performance. EPU possesses unique characteristics, such as high elongation at break, efficient energy dissipation, and superior specific strength, making it well-suited for applications requiring resilience to dynamic loadings. By combining the advantages of AM and EPU, enhanced and customized meta-materials can be created, surpassing the mechanical performance of traditional bulk materials. However, because of the non-linear stress–strain response of both the constitutive material and the structure, designing such meta-materials for high strain-rates can be challenging. In this work, therefore, quasi-static and dynamic experiments were conducted to evaluate a meta-material architecture. The investigation revealed a strong positive rate dependency. The mechanical performances, including strength, and dissipated energy, increased with increasing loading rate. The EPU meta-materials demonstrate their suitability for dynamic applications where high energy dissipation is crucial for reducing transmitted loads. |
| first_indexed | 2024-09-25T04:12:40Z |
| format | Journal article |
| id | oxford-uuid:baed5def-f685-46d2-b816-0a9abf0d479f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-09-25T04:12:40Z |
| publishDate | 2024 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:baed5def-f685-46d2-b816-0a9abf0d479f2024-06-27T09:27:48ZOn the dynamic performance of additively manufactured visco-elastic meta-materialsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:baed5def-f685-46d2-b816-0a9abf0d479fEnglishSymplectic ElementsElsevier2024Le Barbenchon, LLißner, MAdditive manufacturing (AM) has revolutionized the production of structures with tailored material properties, including elastomer polyurethanes (EPU) which exhibit exceptional mechanical performance. EPU possesses unique characteristics, such as high elongation at break, efficient energy dissipation, and superior specific strength, making it well-suited for applications requiring resilience to dynamic loadings. By combining the advantages of AM and EPU, enhanced and customized meta-materials can be created, surpassing the mechanical performance of traditional bulk materials. However, because of the non-linear stress–strain response of both the constitutive material and the structure, designing such meta-materials for high strain-rates can be challenging. In this work, therefore, quasi-static and dynamic experiments were conducted to evaluate a meta-material architecture. The investigation revealed a strong positive rate dependency. The mechanical performances, including strength, and dissipated energy, increased with increasing loading rate. The EPU meta-materials demonstrate their suitability for dynamic applications where high energy dissipation is crucial for reducing transmitted loads. |
| spellingShingle | Le Barbenchon, L Lißner, M On the dynamic performance of additively manufactured visco-elastic meta-materials |
| title | On the dynamic performance of additively manufactured visco-elastic meta-materials |
| title_full | On the dynamic performance of additively manufactured visco-elastic meta-materials |
| title_fullStr | On the dynamic performance of additively manufactured visco-elastic meta-materials |
| title_full_unstemmed | On the dynamic performance of additively manufactured visco-elastic meta-materials |
| title_short | On the dynamic performance of additively manufactured visco-elastic meta-materials |
| title_sort | on the dynamic performance of additively manufactured visco elastic meta materials |
| work_keys_str_mv | AT lebarbenchonl onthedynamicperformanceofadditivelymanufacturedviscoelasticmetamaterials AT lißnerm onthedynamicperformanceofadditivelymanufacturedviscoelasticmetamaterials |