Incorporating Manufacturing Process Simulations to Enhance Performance Predictions of Injection Moulded Metamaterials

Steijvers, Kristof; Claeys, Claus; Van Belle, Lucas; Deckers, Elke

doi:10.1007/s42417-023-01159-1

Cited by 2 publications

(1 citation statement)

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“…Metamaterials represent artificially engineered periodic structures with unique properties distinct from conventional materials [1][2][3]. Mechanical metamaterials manifest * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

High strength induced wide band gap formations in additively manufactured cubic metamaterial

Guo,

Li,

Wang

et al. 2024

Smart Mater. Struct.

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Strength and band gap are the two basic physical features of the cubic metamaterial. How to design band gap characteristics with high strength of structure is the key for the further industrial application in vibration control of the cubic metamaterial. Here a cubic metamaterial is designed by optimal selection of crystal orientation angle to obtain wide band gaps with high strength. The prototype samples were fabricated using advanced additive manufacturing technology to tensile-pressure experiments and sine frequency sweep experiment, thereby demonstrating the validity of the obtained results. Results indicated that the normalized bandwidth of SC metamaterials is 0.47 and the ultimate strength is 25.99 MPa. The normalized bandwidth is increased by 3.1 times and 47 times higher than that of the metamaterials of FCC and BCC. Its ultimate strength is increased by 3.5 times and 6.7 times. The static simulation results revealed that the maximum mises stress values of SC, FCC, and BCC metamaterials were 1.71MPa, 10.49MPa, and 31.40MPa respectively. The attenuation amplitude of the elastic wave measured by experiment is 80dB, which is consistent with the simulation results. The bandwidths of cubic metamaterials exhibit a positive correlation with their strength. The variation in crystal orientation angles plays a crucial role in elucidating the underlying mechanism behind the positive correlation between the strength and the band gap. The further buckling analysis of SC metamaterial with high strength and wide bandgap characteristics reveals that the negative Poisson's ratio structure experiences a reduction in bandwidth and strength as buckling deformation intensifies.

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Section: Introductionmentioning

confidence: 99%