A novel form-finding method for cable-net structures using variable-length cable elements based on absolute nodal coordinate formulation

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-09-03 DOI:10.1016/j.tws.2025.113933

Chengbin Peng, Hui Ren, Wei Fan, Jiashuo Mi

{"title":"A novel form-finding method for cable-net structures using variable-length cable elements based on absolute nodal coordinate formulation","authors":"Chengbin Peng, Hui Ren, Wei Fan, Jiashuo Mi","doi":"10.1016/j.tws.2025.113933","DOIUrl":null,"url":null,"abstract":"<div><div>Cable-net structures rely on the pretension of the cables to provide stiffness to bear external loads and ensure stability. The shape and internal forces exhibit mutual coupling, making form-finding very challenging. A novel form-finding method for cable-net structures is proposed in this work. The cable-net structure is modeled by variable-length and constant-length absolute nodal coordinate formulation (ANCF) cable elements connected by spherical joints and sliding joints. Cable lengths and node positions undergo adaptive adjustment through feedback control. The variable-length elements facilitate the cable length adjustment to ensure uniform tension distribution. The translation velocities of nodes regulate the boundary nodes’ positions to satisfy the preset boundary conditions. The key advantage of the present method is that it is insensitive to initial conditions and can be easily applied to other cable-net structures with more complex shapes. The validity and accuracy of the present form-finding method are demonstrated through several numerical examples.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"218 ","pages":"Article 113933"},"PeriodicalIF":6.6000,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thin-Walled Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0263823125010225","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}

引用次数: 0

Abstract

Cable-net structures rely on the pretension of the cables to provide stiffness to bear external loads and ensure stability. The shape and internal forces exhibit mutual coupling, making form-finding very challenging. A novel form-finding method for cable-net structures is proposed in this work. The cable-net structure is modeled by variable-length and constant-length absolute nodal coordinate formulation (ANCF) cable elements connected by spherical joints and sliding joints. Cable lengths and node positions undergo adaptive adjustment through feedback control. The variable-length elements facilitate the cable length adjustment to ensure uniform tension distribution. The translation velocities of nodes regulate the boundary nodes’ positions to satisfy the preset boundary conditions. The key advantage of the present method is that it is insensitive to initial conditions and can be easily applied to other cable-net structures with more complex shapes. The validity and accuracy of the present form-finding method are demonstrated through several numerical examples.

查看原文本刊更多论文

基于绝对节点坐标公式的变长索单元索网结构寻形方法

索网结构依靠索的预张力提供刚度以承受外部载荷并确保稳定性。形状和内力表现出相互耦合，使得寻找形状非常具有挑战性。本文提出了一种新的索网结构寻形方法。索网结构采用变长和定长绝对节点坐标法（ANCF），通过球节点和滑动节点连接索单元。电缆长度和节点位置通过反馈控制进行自适应调整。变长元件便于调整电缆长度，保证张力分布均匀。节点的平移速度调节边界节点的位置以满足预设的边界条件。该方法的主要优点是对初始条件不敏感，可以很容易地应用于其他形状更复杂的索网结构。通过数值算例验证了该方法的有效性和准确性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.