Synthesis and solution region optimization method of shape-changing mechanisms
QIAN Weixiang
JIN Zhichao
YANG Yinshuo
QU Zhuocheng
GUO Rongzhuo
Abstract：[Objective]To effectively design shape-changing mechanisms and improve design efficiency,the comprehensive design method for such mechanisms was studied,and a solution region optimization method suitable for these mechanisms was proposed.[Methods]Firstly,for different deformation tasks,three types of rigid-body chains were determined.To reduce the difficulty of controlling mechanism deformation,two-link bars were added to the rigid-body chains to obtain single-degree-of-freedom shape-changing mechanisms.Based on the motion generation theory of hinged two-bar groups,an analytical synthesis model of shape-changing mechanisms was established,which could theoretically yield an infinite number of mechanisms capable of completing specified deformation tasks.Then,the motion feasibility of the mechanisms was analyzed,a defect identification method for shape-changing mechanisms was proposed,and the transmission performance of these mechanisms was evaluated.Finally,combined with the solution region optimization method,the optimal mechanism meeting design requirements was quickly screened out from numerous design schemes,thereby shortening the design cycle of such mechanisms.A morphing wing was designed according to the proposed method,and motion simulation was performed on the optimal mechanism.[Results]The simulation results show that the mechanism can complete the specified deformation tasks,verifying the feasibility and effectiveness of the proposed method.
Keywords：Shape-changing mechanismMechanism synthesisSolution region optimizationMechanism defect
Publication Date：2025-09-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 19-25 )