Ji Zhang

Ji Zhang
Yanshan University | YSU

Doctor of Engineering

About

19
Publications
3,504
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134
Citations

Publications

Publications (19)
Article
This paper proposes a flexible kirigami structure. It has rotating rigid squares and cylindrical shells to improve the flexibility of the structure and produce snap-through instability. First, a mechanical spring model based on a quarter of unit cell was established to predict the mechanical characteristics of its deployment. The elastic deformatio...
Article
Foldable and reconfigurable helical antennas change shape to adapt and reconfigure their electromagnetic properties. In order to realize the frequency reconfigurability of helical antennas and increase frequency bandwidth, this paper adds a spherical shell to the top of the Kresling origami, so as to achieve maximum frequency reconfiguration and el...
Article
Full-text available
Origami, such as Miura-ori, is the art of folding two-dimensional materials into complex, elaborate, and multifunctional three-dimensional objects. In this paper, SMP MO sheet are prepared, and the accuracy of deployable process is verified by experiments. The folding and deployable process of SMP MO sheet is divided into 4 stages, and each stage i...
Article
Full-text available
Miura-ori is a form of origami and is widely used in aerospace. The aerodynamic characteristics of Miura-ori composite structure are greatly influenced by its configuration. In this paper, the aerodynamic performance of Mirua-ori sheet in different deployable configurations is studied. Through the analysis of a three-dimensional model of Miura-ori...
Article
Full-text available
A floating air weapon system (such as airborne floating mines) plays an important role in modern air defense operations. This paper focuses on aerodynamic characteristics of airborne floating mine named inflated pillow. Firstly, the dynamic deployable process of the pillow and characteristics of the local instability of the edge are studied, and th...
Article
Full-text available
Owing to the unique advantages in flight altitude, dwelling time and wide coverage area, stratospheric airships provide permanent monitoring and surveillance for both civil and military applications. Here we propose a semi-rigid stratosphere airship design with circumferential high-pressure inflatable rings and a longitudinal carbon fiber skeleton...

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