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On vibration isolation performance and crashworthiness of a three-dimensional lattice metamaterial
Highlights A novel three-dimensional lattice metamaterials with great vibration isolation performance and crashworthiness is proposed. The band gap characteristics of the three-dimensional lattice metamaterial can be flexibly adjusted. The deformation modes and energy absorption efficiency of the three-dimensional lattice metamaterial are investigated. A multi-objective optimization design for the three-dimensional lattice metamaterial is conducted.
Abstract This work investigates the vibration isolation performance and crashworthiness of a novel three-dimensional (3D) lattice metamaterial, whose unit cell is constructed by combining a hollow rhombic dodecahedron and six cylindrical tubes. The transmission of elastic waves in the 3D metamaterial can be suppressed for the existence of band gaps in the metamaterial. Meanwhile, the 3D metamaterial can absorb the crushing energy through plastic deformation when a collision occurs. The influence of structural parameters on the band gap features and crashing behaviors of the novel 3D metamaterial are examined. It is shown that the structural parameters play a vital role in determining the band gap features and crashing behaviors. Thus, the required vibration isolation performance and crashworthiness can be obtained by adjusting the structural parameters reasonably. Finally,multi-objective optimization is performed from the comprehensive aspects of vibration isolation performance and crashworthiness to obtain the optimal design of the novel 3D metamaterial. This work provides a new possibility for the development of multifunctional metamaterials with vibration isolation performance and crashworthiness simultaneously.
On vibration isolation performance and crashworthiness of a three-dimensional lattice metamaterial
Highlights A novel three-dimensional lattice metamaterials with great vibration isolation performance and crashworthiness is proposed. The band gap characteristics of the three-dimensional lattice metamaterial can be flexibly adjusted. The deformation modes and energy absorption efficiency of the three-dimensional lattice metamaterial are investigated. A multi-objective optimization design for the three-dimensional lattice metamaterial is conducted.
Abstract This work investigates the vibration isolation performance and crashworthiness of a novel three-dimensional (3D) lattice metamaterial, whose unit cell is constructed by combining a hollow rhombic dodecahedron and six cylindrical tubes. The transmission of elastic waves in the 3D metamaterial can be suppressed for the existence of band gaps in the metamaterial. Meanwhile, the 3D metamaterial can absorb the crushing energy through plastic deformation when a collision occurs. The influence of structural parameters on the band gap features and crashing behaviors of the novel 3D metamaterial are examined. It is shown that the structural parameters play a vital role in determining the band gap features and crashing behaviors. Thus, the required vibration isolation performance and crashworthiness can be obtained by adjusting the structural parameters reasonably. Finally,multi-objective optimization is performed from the comprehensive aspects of vibration isolation performance and crashworthiness to obtain the optimal design of the novel 3D metamaterial. This work provides a new possibility for the development of multifunctional metamaterials with vibration isolation performance and crashworthiness simultaneously.
On vibration isolation performance and crashworthiness of a three-dimensional lattice metamaterial
Zhang, Linwei (author) / Bai, Zhonghao (author) / Zhang, Qiang (author) / Jin, Yao (author) / Chen, Yafeng (author)
Engineering Structures ; 292
2023-06-18
Article (Journal)
Electronic Resource
English