Analytical Model of Temperature-Induced Deformation for Tunable Thermal Expansion Metamaterial

被引:0
|
作者
Xiao, Ling [1 ]
Yao, Yaxin [1 ]
Chen, Shuai [2 ]
Lai, Mengting [1 ]
Zhu, Guanghong [1 ]
机构
[1] Xian Univ Sci & Technol, Dept Mech, Xian 710054, Peoples R China
[2] Harbin Inst Technol, Natl Key Lab Sci & Technol Adv Composites Special, Harbin 150001, Peoples R China
基金
中国国家自然科学基金;
关键词
tunable thermal expansion metamaterial (TTEM); virtual work principle; temperature-induced deformation; coverage ratio;
D O I
10.3390/ma18030532
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Tunable thermal expansion metamaterials exhibit superior shock absorption performance in the field of high-precision equipment, but the applications are currently restricted by the unclear quantitative relationship of temperature-induced deformation. Herein, this work leverages the virtual work principle and the deformation geometric relationship to establish a generic temperature-induced deformation control model for bi-materials by utilizing the key variable coverage ratio under the condition of no deformation in the vertical direction. The feasible region regarding flexibility for the internal serpentine unit and lattice structure with different coverage ratios is given. The combination of the finite element and experimental methods is adopted to examine temperature-induced deformation, which presents tunable thermal expansion performances associated with the coverage ratio and temperature. This work, based on the established deformation coordination relationship of dual-material temperature-sensitive metamaterials, achieves temperature-induced deformation control and provides a reference for structural design adaptable in various working conditions such as vibration isolation and vibration reduction in complex engineering such as aerospace and so on. By strategically designing the coverage of the two structures within the specified range to maintain equivalent flexibility, the ultimate deformation of the serpentine unit is reduced by one-half due to deformation induced by temperature variations.
引用
收藏
页数:14
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