Abstract
Many industries, such as automotive and aerospace, have specific requirements for new and innovative lightweight materials. The bioinspired structures demonstrate a substantial improvement over traditional lightweight structures in their ability to achieve exceptional energy absorption capabilities. This paper is the first to examine the lateral energy absorption behavior of DNA-inspired sandwich lattice structures. The DNA-inspired lattice can be considered as a possible energy-absorbing structure with the capabilities of graded and hierarchical structures. By changing three DNA structural parameters, 27 models are created and labeled. The effects of three DNA structural parameters on the energy absorption characteristics are examined by ABAQUS/Explicit™ quasi-static FEM simulations. The crashworthiness of the bionic DNA lattice devices has been thoroughly investigated using load, specific energy absorption–displacement curves, and deformation patterns, as well as comparative studies. Thanks to their unique construction, the load–displacement curves show smooth behavior with low initial peak forces. Specific energy absorption (SEA) increases as each size gets smaller because it reduces the mass of the structure, and model 27 (cross-section size, distance between two double helixes, base pair diameter (6 × 4–21–2)) shows the best energy-absorbing properties, giving 83.2% more SEA than the base model.
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Acknowledgements
This work was supported by the Doctoral Scientific Research Foundation of the HUAT under Grant No. BK202205 and the Foundation of the Key Laboratory of Automotive Power Train and Electronics (Hubei University of Automotive Technology) under Grant No. ZDK1202105.
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CX: data curation, writing-original draft preparation; AN: conceptualization, methodology, supervision, and rewriting; DZ: visualization and investigation.
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Xi, C., Najibi, A. & Zheng, D. Lateral Energy Absorption Analysis of a New Bioinspired DNA Lattice Structure. Iran J Sci Technol Trans Mech Eng 48, 743–756 (2024). https://doi.org/10.1007/s40997-023-00684-4
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DOI: https://doi.org/10.1007/s40997-023-00684-4