On the dynamic performance of additively manufactured visco-elastic meta-materials
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
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.
Details
Original language | English |
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Article number | 135823 |
Number of pages | 4 |
Journal | Materials Letters |
Volume | 359 |
Publication status | Published - 15 Mar 2024 |
Peer-reviewed | Yes |
Keywords
ASJC Scopus subject areas
Keywords
- Additive Manufacturing, Architected material, Dynamic loading, Meta-materials, Visco-elasticity