Programming the deformation of a temperature-driven bilayer structure in 4D printing

Zeng, Siyuan; Gao, Yicong; Feng, Ying; Zheng, Hao; Qiu, Hao; Tan, Jianrong

doi:10.1088/1361-665x/ab39c9

Cited by 43 publications

(36 citation statements)

References 42 publications

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“…The development of smart core sandwich structure is pursued in parallel with the development of smart materials. 11 –17,36,148 –160 Currently, piezoelectrics, SMAs, electrorheological, and magnetorheological fluids are widely used smart materials. Figure 18 shows some typical smart core structures.…”

Section: Core Structure Designmentioning

confidence: 99%

Creative design for sandwich structures: A review

Feng

Qiu

Gao

et al. 2020

International Journal of Advanced Robotic Systems

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Sandwich structures are important innovative multifunctional structures with the advantages of low density and high performance. Creative design for sandwich structures is a design process based on sandwich core structure evolution mechanisms, material design method, and panel (including core structure and facing sheets) performance prediction model. The review outlines recent research efforts on creative design for sandwich structures with different core constructions such as corrugated core, honeycomb core, foam core, truss core, and folded cores. The topics discussed in this review article include aspects of sandwich core structure design, material design, and mechanical properties, and panel performance and damage. In addition, examples of engineering applications of sandwich structures are discussed. Further research directions and potential applications are summarized.

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Section: Core Structure Designmentioning

confidence: 99%

Creative design for sandwich structures: A review

Feng

Qiu

Gao

et al. 2020

International Journal of Advanced Robotic Systems

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“…Hernandez et al [32] did a parametric study to interpret the effects of different manufacturing parameters on the mechanical performance of ABS specimens and proposed an experimentalmodeling to predict mechanical properties of the structures printed via FDM process. Zeng et al [33] formulated a 4D printing mathematical model considering printing process parameters to predict the curvature of self-folding hinges. Bodaghi et al [34] presented a finite element method (FEM) in Abaqus to simulate the thermo-mechanical behavior of the 4D printed structures.…”

Section: Figure 1 a Potential Application Of Designing The 4d Printed Hinges In Structuresmentioning

confidence: 99%

Comprehensive Study on Shape Shifting Behaviors of Thermally Activated Hinges in FDM-based 4D Printing

Nezhad

Golzar

Behravesh

et al. 2021

Preprint

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4D printing of shape shifting structures, aka “hinges”, has raised a new standard in many fields. By using these hinges in certain parts of a 3D printed structures, a pre designed complex 3D shape with potential multifunctional application can be achieved from flat structure. This paper proposes a comprehensive semi-empirical model to predict the final shape shifting behavior and magnitude of the hinges printed by FDM process. First, all FDM main parameters are selected and reduced by design of experiment to printing speed, lamina thickness, nozzle temperature as well as printing pattern. In order to develop the model, a time-dependent constitutive model with these four process parameters were extracted for strain of an SMP homogeneous single layer structure using a fractional Zener model accompanied with Multiple Linear Regression (MLR) technique. Thereafter, the mathematical relations for shape shifting behavior of bilayer 4D printed structures were developed for beam bending and twisting by modifying Timoshenko’s constitutive equations. A comprehensive shape-shifting model was established including 3D printing parameters, angles, thickness ratios, activation time and temperature which was compared to the experimental data and results predicted both shape shifting behavior and magnitude of the hinges with good agreement. In addition, a novel flowchart was suggested to design and achieve the desired shape shifting behaviors. The proposed model and flowchart are novel tools to design 4D structures through desired shape-shifting of the hinges.

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“…In addition, studies on the different aspects of origami materials were highlighted and the challenges ahead discussed [42,43]. Zeng [44] proposed a method for programming the deformation of a temperature-driven bilayer structure, which provided a great possibility for fabricating complex origami and foldable structures.…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of Origami-Inspired Orthopyramid-Like Core Panel for Load Damping

Feng

Gao

et al. 2019

Applied Sciences

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Core panels inspired by origami have the advantages of force allocation and energy dissipation. Used as a sandwich core, the three-dimensional panels could be created using various origami patterns. The panel is composed of the element whose structure is inspired by origami. The orthopyramid-like origami element has a tip of joined-together side triangles. Through shape deformation, it could exhibit potential mechanical performances. Owing to its deformation when collision occurs, the structure could be employed for load damping conditions. This study focuses on nine different orthopyramid-like core panels through changing the similarity parameter value and the number of edges. The experiment and numerical simulation of compression and impact tests are carried out to perform the parametric study on the influences of the similarity parameter and the number of edges. The results show that with the increase of these two parameters, the panel tends to be softer, greatly influencing the load damping ability. Moreover, the structure parameters are optimized by the Genetic Algorithm integrated with the finite element analysis model.

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Programming the deformation of a temperature-driven bilayer structure in 4D printing

Cited by 43 publications

References 42 publications

Creative design for sandwich structures: A review

Creative design for sandwich structures: A review

Comprehensive Study on Shape Shifting Behaviors of Thermally Activated Hinges in FDM-based 4D Printing

Design and Optimization of Origami-Inspired Orthopyramid-Like Core Panel for Load Damping

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