A computational method to find the optimal driving-path for stable state transformation of multistable tensegrity

IF 4.4 2区工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Computers & Structures Pub Date : 2025-02-27 DOI:10.1016/j.compstruc.2025.107695

Zhiyin Xu , Jinyu Lu , Jiarong Wu , Jilei Liu , Xun Gu , Na Li

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Abstract

This paper introduces a computational approach for identifying the optimal driving-path for stable state transformations (SST) of multistable tensegrity structures. In order to capture the morphological changes of the tensegrity structure when the driving-nodes are actuated along arbitrary driving-path, a tracking method is firstly introduced. Then, the concept of segmenting-nodes is introduced to parameterize the driving-path. With the coordinates of segmenting-nodes on driving-path as optimization variables and the minimum energy threshold in the process of SST as objective function, a nonlinear optimization model is established and solved by particle swarm optimization algorithm. The feasibility of the proposed method is verified by three multistable tensegrity examples with different scales. In addition, the proposed method is compared with two existing methods, and the results further prove that the proposed method has the advantages of simple driving scheme and low energy threshold. The research provides instructive significance for the practical application of multistable tensegrity.

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多稳定张拉整体稳态转换最优驱动路径的计算方法

本文介绍了一种确定多稳定张拉整体结构稳态转换最优驱动路径的计算方法。为了捕捉驱动节点沿任意驱动路径驱动时张拉整体结构的形态变化，首先引入了一种跟踪方法。然后，引入分割节点的概念，对驱动路径进行参数化。以行驶路径上的分割节点坐标为优化变量，以海温过程中的最小能量阈值为目标函数，建立非线性优化模型，并采用粒子群优化算法求解。通过三个不同尺度的多稳定张拉整体算例验证了该方法的可行性。此外，将所提方法与现有的两种方法进行了比较，结果进一步证明了所提方法具有驱动方案简单、能量阈值低的优点。该研究对多稳定张拉整体的实际应用具有指导意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Computers & Structures 工程技术-工程：土木

CiteScore

8.80

自引率

6.40%

发文量

122

审稿时长

33 days

期刊介绍： Computers & Structures publishes advances in the development and use of computational methods for the solution of problems in engineering and the sciences. The range of appropriate contributions is wide, and includes papers on establishing appropriate mathematical models and their numerical solution in all areas of mechanics. The journal also includes articles that present a substantial review of a field in the topics of the journal.