面向4D打印双层结构自弯曲的变形激励源布局设计  

Incentive Source Layout Design for Self-bending of 4D Printing Double-layer Structure

作　　者：王闯 刘振宇[1] 段桂芳[1] 谭建荣[1] WANG Chuang;LIU Zhenyu;DUAN Guifang;TAN Jianrong(State Key Laboratory of CAD&CG,Zhejiang University,Hangzhou 310027)

机构地区：[1]浙江大学CAD&CG国家重点实验室,杭州310027

出　　处：《机械工程学报》2020年第15期72-79,共8页Journal of Mechanical Engineering

基　　金：国家自然科学基金(51475417,51475418,51490663);浙江省自然科学基金(Y19E050078)资助项目。

摘　　要：自弯曲作为4D打印的主要变形形式,近年来受到广大研究者的关注。目前针对4D打印结构自弯曲变形的研究主要以试验为主,即通过大量试验指导4D打印产品设计。针对这一问题,提出了面向4D打印双层结构自弯曲的变形激励源布局设计方法。将简单双层结构作为复杂结构变形的激励源,仅需对激励源进行试验测试,即可通过理论模拟多激励源驱动下的4D打印结构变形结果,实现4D打印结构自弯曲的模拟仿真。同时,通过激励源布局参数反求思路,可以指导4D打印自弯曲结构产品设计,为4D打印结构设计提供了新的思路。最后,通过试验测试验证了该方法的有效性,并发现相较于激励源间距,激励源数量对结构弯曲有更大影响。通过合理设计激励源数量和间距,能够实现对4D打印双层结构自弯曲变形的控制。Self-bending, as the main form of deformation of 4 D printing, has attracted the attention of researchers in recent years. The research on self-bending deformation of 4 D printing structure is mainly based on experiments, and the 4 D printing product design is guided by a large number of experiments. In order to solve this problem, a layout design method of incentive source for self-bending of 4 D printing double-layer structure is proposed. Simple double-layer structure is used as the incentive source of complex structure deformation. The deformation results of 4 D printing structure driven by multiple incentive sources can be simulated theoretically and the self-bending simulation of 4 D printing structure can be realized only by testing the excitation source. At the same time, the idea of inverse calculation of layout parameters of incentive source are also put forward, which effectively solves the design problem of 4 D printing self-bending structure product, and provides a new idea for the design of 4 D printing structure. Finally, the effectiveness of the method is verified by experiments. It is found that the number of excitation sources has a greater impact on the bending of the structure than the spacing of excitation sources. The self-bending deformation of 4 D printing double-layer structure can be controlled by reasonable design of the number and interval of excitation sources.

关 键 词：激励源 4D打印 自弯曲 MINDLIN板理论 

分 类 号：TG122[金属学及工艺—金属学]