Research on Behaviors of Functional Components Based on 4D Printing and Design of Temperature-driven Deformation

doi:10.3901/JME.2023.03.189

Abstract

Abstract: 4D printing is an intelligent additive manufacturing technology based on 3D printing. It is applied to fabricate functional components that perform controllable transformations of geometric structure, function and performance under external excitation such as temperature, magnetic field and ultraviolet ray. A bilayer functional component was employed and the thermal expansions of two layers are analysed. The thermal deformation mechanism of 4D printed functional components is investigated and the deformation patterns of functional components based on arrangement of shape memory polymer fibre are obtained. Then, effect of 3D printing process parameters on functional components is analysed, and an approximate analytical model of temperature-driven deformation of functional components is established. The equivalent temperature-driven deformation models of bending and helixing behaviors are fitted by partial least squares method. These models are verified by the comparison between the measured values and calculated values. Finally, a self-folding functional component and a self-assembling functional component are designed and fabricated by 4D printing. The programmability of functional components is verified and it is helpful to design the behaviors of functional components based on 4D printing.

Key words: functional components, controlled deformation, top down design, 4D printing

CLC Number:

TB381

GAO Yicong, ZENG Siyuan, XU Junjun, ZHENG Hao, TAN Jianrong. Research on Behaviors of Functional Components Based on 4D Printing and Design of Temperature-driven Deformation[J]. Journal of Mechanical Engineering, 2023, 59(3): 189-199.

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