摘要
4D打印是一门新兴的制造技术,所打印结构的形状、属性或功能在外部环境的刺激下会随着时间的推移而变化。智能软物质材料由于变形大,激励响应机制多,响应速度快等特点被广泛使用于4D打印中,尤其是形状记忆水凝胶和形状记忆聚合物。目前对复合软材料的刚度和弯曲形状的控制是4D打印在应用上的两个难题,建立4D打印复合结构的等效模量和曲率预测模型对复合软材料的力学性能的设计具有指导意义。本文对现有的4D打印复合结构的等效模量及弯曲曲率模型进行了概述,首先介绍了4D打印结构在静态和动态下的弹性模量预测模型,然后,重点综述了Stoney理论,Timoshenko理论和复合材料力学在复合软材料弯曲曲率建模上的应用。最后探讨了现有4D打印复合软材料力学预测模型存在的问题及主要发展的方向。
4 D printing is an emerging manufacturing technology, the shape, property, or functionality of the printed structure will change with time under the stimulation of external environment. Smart soft matter is widely used in 4 D printing due to its large deformation, multiple excitation response mechanisms and fast response speed, especially shape memory hydrogels and shape memory polymers. At present, the control of rigidity and bending shape of soft composite is two difficult problems in the application of 4 D printing, and the establishment of equivalent modulus and curvature prediction models has guiding significance for the design of mechanical properties of 4 D printed composite structures. This article gave an overview of the equivalent modulus and bending curvature models of the existing 4 D printed composite structures, the elastic modulus prediction models of 4 D printed structures under static and dynamic conditions were introduced. Then, the application of Stoney theory, Timoshenko theory and composite material mechanics in flexural curvature modeling of soft composite was emphatically reviewed. In the end, the existing problems of the existing 4 D printing soft composite mechanics prediction model and the main development direction were discussed.
作者
赵先锋
汤朋飞
史红艳
ZHAO Xianfeng;TANG Pengfei;SHI Hongyan(School of Mechanical Engineering,Guizhou University,Guiyang 550025,China)
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2021年第6期1651-1668,共18页
Acta Materiae Compositae Sinica
基金
国家自然科学基金(51765009)。
关键词
4D打印
制造技术
复合软材料
等效模量
曲率
预测模型
4D printing
manufacturing technology
soft composite
equivalent modulus
curvature
prediction model
