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논문 기본 정보

자료유형
학술대회자료
저자정보
Zhiming Cui (Shanghai Jiao Tong University) Jaehyung Ju (Shanghai Jiao Tong University)
저널정보
대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2022년 학술대회
발행연도
2022.11
수록면
809 - 815 (7page)

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초록· 키워드

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Mechanical couplings such as axial–shear and axial–bending have great potential in designing active mechanical metamaterials with directional control of input and output loads in sensors and actuators. However, the current ad hoc design of mechanical coupling without theoretical support of elasticity cannot provide design guidelines for mechanical coupling with lattice geometries. Moreover, the correlation between mechanical coupling effects and geometric symmetry is not yet clearly understood. In this work, we systematically search for all possible mechanical couplings in 2D lattice structures by determining the nonzero diagonal terms in the decomposed micropolar elasticity tensor. We also correlate the mechanical couplings with the point-group symmetry of 2D lattices by applying the symmetry operation to the decomposed micropolar elasticity tensor. The decoupled micropolar constitutive equation uncovers eight coupling effects for 2D lattice structures. The symmetry operation of the decoupled micropolar elasticity tensor reveals the correlation of the mechanical coupling with the point groups. Our findings can strengthen the design of mechanical metamaterials with potential applications in areas including sensors, actuators, soft robots, and active metamaterials for elastic/acoustic wave guidance and thermal management.

목차

Abstract
1. Introduction
2. Decoupled micropolar elasticity tensor
3. Discussion
4. Conclusion
References

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