Article
Materials Science, Composites
Tian -Wei Liu, Jiang -Bo Bai, Hao-Tian Xi, Nicholas Fantuzzi
Summary: This paper investigates the bistable behavior of a curved bistable composite slit tube (Bi-CST) using experimental, numerical, and analytical methods. Two specimens were prepared using the vacuum bag method and bistable experiments were performed. Two Finite Element Models (FEMs) were presented to model the bistable deformation process. An analytical model based on the minimum energy principle and three failure criteria was proposed to determine the bistable behavior, and the results were compared with experimental and numerical data, showing good agreement.
COMPOSITES COMMUNICATIONS
(2023)
Article
Engineering, Civil
Tian -Wei Liu, Jiang -Bo Bai, Hao-Tian Xi, Nicholas Fantuzzi, Qing Liu
Summary: This paper studies the bistable behavior of a new bistable deployable composite boom (Bi-DCB) with central flat region, which can realize bistable function by storing and releasing strain energy, and has potential applications in engineering. Through analytical, experimental and numerical methods, the paper develops an analytical model to predict the bistable behavior of the Bi-DCB, and validates it through experiments and numerical simulations. The influence of geometric parameters on the bistable behavior is also investigated.
ENGINEERING STRUCTURES
(2023)
Article
Chemistry, Multidisciplinary
Ruixin Li, Haorong Chen, Jong Hyun Choi
Summary: Deployable geometries are finite auxetic structures that can maintain their overall shape while expanding and contracting. A deployable flight ring made from DNA origami has been demonstrated in this study, showing the feasibility of deployable nanostructures. The flight ring consists of six triangles in two layers that can switch between open and closed states, with a trefoil knot topology and negative Poisson's ratios. This work provides a versatile platform for topological studies and opens up new opportunities for bioengineering.
Article
Engineering, Civil
Anthony Verzoni, Masoud Rais-Rohani
Summary: This study explores various design concepts for foldable shelters, presenting and analyzing shelter forms inspired by the geometric attributes of origami. Rigorous mathematical models and CAD modeling are used to evaluate and compare thin-walled and thick-walled shelter concepts. The results demonstrate the applicability of compound folding patterns in thick-walled origami-inspired shelters, and the dependence of erection torque on application location and transition process.
ENGINEERING STRUCTURES
(2022)
Article
Mechanics
Cheng Wang, Dawei Zhang, Junlan Li, Zhong You
Summary: This study presents a kirigami-inspired approach to create deployable surface structures with completely flat surfaces by selectively cutting open some creases in origami patterns. Parametric study identifies a family of deployable structures composed of panels of uniform thickness.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2022)
Article
Engineering, Civil
Chunlong Wang, Hongwei Guo, Rongqiang Liu, Zongquan Deng
Summary: This paper proposes a novel space deployable structure with curved surface based on origami design. By integrating two types of origami modules, this structure can be utilized to construct different target configurations. Geometric analysis and a comprehensive design method are provided, and two sample prototypes are manufactured to verify the potential applications of the origami-based deployable structures in aerospace engineering.
ENGINEERING STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Zheng Zhang, Libin Xiong, Min Sun, Guang Zhang, Hao Ding, Huaping Wu, Shaofei Jiang
Summary: A novel high-temperature resistant carbon fiber/bismaleimide resin composite shell is proposed and its bistable characteristics are studied in megathermal environment. The effects of elevated temperatures and different ply angles on curvatures and snap behaviors of the carbon fiber/bismaleimide resin composite bistable shells were investigated through experiment and finite element analysis. The results provide significant understanding of the morphing behaviors of the carbon fiber/bismaleimide bistable structure in a high-temperature environment.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2022)
Article
Engineering, Mechanical
Agustin Iniguez-Rabago, Johannes T. B. Overvelde
Summary: This article investigates the multistability of non-linear elastic origami metamaterials and classifies their complex folding behavior by drawing a similitude to atomic crystals. The study provides a foundation for controlling multistable metamaterials in future applications.
EXTREME MECHANICS LETTERS
(2022)
Article
Engineering, Mechanical
Lei Zhang, Fei Pan, Yong Ma, Kuijian Yang, Shu Guo, Yuli Chen
Summary: This study presents the design of a shape-reconfigurable metamaterial, which achieves high bearing force and low switching force by separating the load-bearing direction and the state-switching direction, and combining the folding feature of origami. The feasibility of the design concept is validated experimentally and the optimal geometric parameters are determined through finite element simulations.
EXTREME MECHANICS LETTERS
(2023)
Article
Chemistry, Analytical
Tinghao Liu, Guangbo Hao
Summary: This study presents two distinctive deployable structures based on a programmable compliant bistable lattice. By adjusting the defined geometry parameters, the programmable bistable lattices can be optimized for specific targets such as a larger deformation range or higher stability.
Article
Engineering, Aerospace
Andrew J. Lee, Juan M. Fernandez, Jacob G. Daye
Summary: This paper investigates the stable extended and coiled states of thin-shelled composite booms with parabolic cross sections. The conic shapes offer greater stiffness properties compared to circular cross sections, which is crucial for improving the load-bearing performance of deployed booms. Inducing bistability through composite layups in parabolic booms allows for controllable self-deployment. An inextensional analytical model is used to predict the stable coiled diameters of tape spring and collapsible tubular mast (CTM) booms with parabolic cross sections.
JOURNAL OF SPACECRAFT AND ROCKETS
(2023)
Article
Engineering, Civil
M. V. B. Santana, L. I. W. Arnouts, T. J. Massart, P. B. Goncalves, P. Z. Berke
Summary: This study investigates the structural characteristics of 3D deployable frames and their mechanical properties during transformation, proposing a new finite element model for joints and conducting numerical research. It is found that considering finite joint size and beam spacing can significantly reduce the required transformation force. Additionally, the impact of different structural design strategies on structural performance is compared.
ENGINEERING STRUCTURES
(2021)
Article
Chemistry, Analytical
Zepeng He, Yang Shi, Xiangchao Feng, Zhen Li, Yan Zhang, Chunai Dai, Pengfei Wang, Liangyu Zhao
Summary: The study analyzed the thermodynamic behavior and shape memory effects of deployable structures based on SMPs using coupled finite element method, confirming its accuracy and reliability. The step-by-step driving structure is suitable for large-scale deployment in space, offering a new direction for research on epoxy SMPs.
Article
Engineering, Mechanical
Ningxiner Zhao, Ryan L. Harne
Summary: This research investigates the interface between a Hoberman ring and Miura-ori tessellation to maintain curved shapes for sound focusing. The Miura-ori facets are considered to vibrate like baffled pistons and generate acoustic waves that radiate from the ring structure. Analysis and experiments reveal distinct wave focusing phenomena in this manifestation of the acoustic array.
JOURNAL OF MECHANICAL DESIGN
(2021)
Article
Materials Science, Composites
Yonglong Ma, Zheng Zhang, Sheng Wang, Baisong Pan, Min Sun, Guang Zhang, Hao Chai, Huaping Wu, Shaofei Jiang
Summary: In this study, the effect of periodic gaps on the performance of thermoplastic composite laminates was investigated. It was found that embedding gaps in bistable laminates led to a significant decrease in the snap load of the laminates. Furthermore, increasing gap width resulted in a larger discrepancy between the snap-through and snap-back processes. These findings are of great importance for controlling the mechanical properties of bistable laminates.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Physical
Min Sun, Huping Zhou, Chongjie Liao, Zheng Zhang, Guang Zhang, Shaofei Jiang, Feng Zhang
Summary: This paper proposes a multi-objective optimization model for an anti-symmetric cylindrical shell in a bionic gripper structure. It establishes multiple surrogate models using the response surface method and optimizes the design space using the non-dominated sorting genetic algorithm-II (NSGA-II). The design points are verified experimentally. The optimization aims to minimize the first steady state transition load and maximize the second steady state transition load, while preventing stable instability caused by stress concentration. The validity of the optimization results is verified through finite element and experimental methods. The anti-symmetric cylindrical shell shows potential application prospects in deformable structures and bionic structures due to its significantly larger stable transition load compared to orthogonal laminated plates.
Article
Polymer Science
Min Sun, Weiliang Gao, Zheng Zhang, Hongcheng Shen, Yisong Zhou, Huaping Wu, Shaofei Jiang
Summary: This paper introduces a unified semianalytical model based on nonlinear theory to predict the deformation and stability of bistable polymer composite structures. The higher-order theoretical model is extended for improved accuracy with lower computational cost. The main factors affecting stability characteristics are determined through comparison of different-order models.
Article
Instruments & Instrumentation
Guang Zhang, Junyu Chen, Zheng Zhang, Min Sun, Yang Yu, Jiong Wang, Shibo Cai
Summary: This study describes the magnetic analysis of a novel double cup-shaped gap magnetorheological (MR) clutch using four kinds of Halbach array to excite the MR gel. The distribution of magnetic flux density, shear yield stress, dynamic viscosity, and shear stress inside the MR gel is obtained and carefully studied. The structure of the prototype is optimized based on multi-physics analysis and the optimal MR clutch is developed and tested for magneto-static torque.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Materials Science, Composites
Yonglong Ma, Zheng Zhang, Sheng Wang, Baisong Pan, Min Sun, Guang Zhang, Hao Chai, Huaping Wu, Shaofei Jiang
Summary: In this study, the effect of periodic gaps on the performance of thermoplastic composite laminates was investigated. It was found that embedding gaps in bistable laminates led to a significant decrease in the snap load of the laminates. Furthermore, increasing gap width resulted in a larger discrepancy between the snap-through and snap-back processes. These findings are of great importance for controlling the mechanical properties of bistable laminates.
POLYMER COMPOSITES
(2023)
Article
Instruments & Instrumentation
Min Sun, Kun Zhang, Xinzheng Guo, Zheng Zhang, Yiji Chen, Guang Zhang, Shaofei Jiang
Summary: In this study, a new negative stiffness metamaterial is designed using laminates with independent negative stiffness properties as the functional component and a discrete assembly method. The metamaterial is designed by a mathematical model and verified and analyzed systematically by experiment and finite element method. The influence of each laminate parameter on the design of metamaterials under uniform distribution and gradient distribution was investigated, and based on this, the load-bearing capacity enhancement strategy of metamaterials was further explored.
SMART MATERIALS AND STRUCTURES
(2023)
