{"title":"Dynamic simulation and experimental investigation of the double-rope winding hoister based on an equivalent mechanical model of wire ropes","authors":"","doi":"10.1016/j.istruc.2024.107237","DOIUrl":null,"url":null,"abstract":"<div><p>Accurate and efficient dynamic analysis is essential for the reliable operation and optimal design of the wire rope hoisters. However, traditional 3D finite element (FE) methods require a significant amount of time for long and geometrically complex steel wire ropes that makes it impossible to predict dynamic performances of wire rope winding hoisters. For this problem, an equivalent mechanical modeling method for different wire ropes is proposed in this work. Based on this method, an equivalent mechanical model (EMM) is established for a circular arc wire rope with a fan-shaped strand cross section and verified by experimental tests. It is also validated that this EMM has the capability of characterizing mechanical behaviors of tension, torsion and bending deformations of the wire rope at the same time. Base on the EMM, a full-size 3D FE model of the double-rope winding hoister is established for the first time to investigate its dynamic performances during the lifting processes under a long-distance, high-speed, heave-load condition. Apart from the coupling axial and lateral vibrations and dynamic tension fluctuations of the wire ropes, the multi-layer winding process of ropes and the interaction between the ropes and the drums and sheaves as well as the rope itself are captured by this FE model against the traditional theoretical method. The accuracy of the FE model is finally verified by an experimental test using a double rope winding hoister test prototype. The method proposed in this work can contribute to the early design and analysis of wire rope drive hoisters.</p></div>","PeriodicalId":48642,"journal":{"name":"Structures","volume":null,"pages":null},"PeriodicalIF":3.9000,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352012424013894","RegionNum":2,"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
Accurate and efficient dynamic analysis is essential for the reliable operation and optimal design of the wire rope hoisters. However, traditional 3D finite element (FE) methods require a significant amount of time for long and geometrically complex steel wire ropes that makes it impossible to predict dynamic performances of wire rope winding hoisters. For this problem, an equivalent mechanical modeling method for different wire ropes is proposed in this work. Based on this method, an equivalent mechanical model (EMM) is established for a circular arc wire rope with a fan-shaped strand cross section and verified by experimental tests. It is also validated that this EMM has the capability of characterizing mechanical behaviors of tension, torsion and bending deformations of the wire rope at the same time. Base on the EMM, a full-size 3D FE model of the double-rope winding hoister is established for the first time to investigate its dynamic performances during the lifting processes under a long-distance, high-speed, heave-load condition. Apart from the coupling axial and lateral vibrations and dynamic tension fluctuations of the wire ropes, the multi-layer winding process of ropes and the interaction between the ropes and the drums and sheaves as well as the rope itself are captured by this FE model against the traditional theoretical method. The accuracy of the FE model is finally verified by an experimental test using a double rope winding hoister test prototype. The method proposed in this work can contribute to the early design and analysis of wire rope drive hoisters.
精确高效的动态分析对于钢丝绳卷扬机的可靠运行和优化设计至关重要。然而,传统的三维有限元(FE)方法对于长且几何形状复杂的钢丝绳来说需要大量时间,因此无法预测钢丝绳卷绕卷扬机的动态性能。针对这一问题,本研究提出了一种针对不同钢丝绳的等效力学建模方法。根据该方法,为具有扇形股横截面的圆弧钢丝绳建立了等效力学模型(EMM),并通过实验测试进行了验证。同时还验证了该等效力学模型能够同时描述钢丝绳的拉伸、扭转和弯曲变形等力学行为。在 EMM 的基础上,首次建立了双绳缠绕卷扬机的全尺寸三维有限元模型,以研究其在长距离、高速、起伏载荷条件下提升过程中的动态性能。除了钢丝绳的轴向和横向耦合振动以及动态张力波动外,与传统理论方法相比,该 FE 模型还捕捉到了钢丝绳的多层缠绕过程以及钢丝绳与卷筒、滑轮和钢丝绳本身之间的相互作用。最后,通过使用双绳缠绕卷扬机试验原型进行实验测试,验证了 FE 模型的准确性。本研究提出的方法有助于钢丝绳驱动卷扬机的早期设计和分析。
期刊介绍:
Structures aims to publish internationally-leading research across the full breadth of structural engineering. Papers for Structures are particularly welcome in which high-quality research will benefit from wide readership of academics and practitioners such that not only high citation rates but also tangible industrial-related pathways to impact are achieved.