10th edition of the conference on Textile Composites and Inflatable Structures最新文献_第3页

Design and Analysis of Baffled Inflatable Wing 挡板充气翼的设计与分析

10th edition of the conference on Textile Composites and Inflatable Structures Pub Date : 1900-01-01 DOI: 10.23967/membranes.2021.067

Y. Song, S. Panwar, A. Aris, U. Gandhi

{"title":"Design and Analysis of Baffled Inflatable Wing","authors":"Y. Song, S. Panwar, A. Aris, U. Gandhi","doi":"10.23967/membranes.2021.067","DOIUrl":"https://doi.org/10.23967/membranes.2021.067","url":null,"abstract":"A global Toyota research team is investigating the feasibility of a tethered wing flying at high altitude in jet stream wind. Such wing called ‘mother ship’ can be used to generate renewable energy, help communication and provide steady meteorology data. One of the approaches to design such wing is to use inflatable baffled structure for the structural component. Such structure is considered due to its lightweight, flexibility under heavy gust and ability to fold into smaller volume. There are many challenges associated with the development of such inflatable structures, i.e. wing fabrication using lightweight textile composites, aerodynamic design of the wing with tether attachment, the inflated wing geometry, and the structural rigidity. In this paper, we will present a design and analysis workflow for such inflatable baffled wing. Computer-aided design, wing fabrication, static loading analysis will be discussed in detail. Finite element (FE) method to simulate inflation process and subsequent bending and torsion under wind load is developed to help design and optimization of the wing structure. Also, physical parts are built and corresponding physical processes, such as 3D scan of the inflated wing surface and the bending and torsion tests, are performed to validate the FE simulation.","PeriodicalId":395358,"journal":{"name":"10th edition of the conference on Textile Composites and Inflatable Structures","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130462840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Time-Temperature-Shift Principle and Stepped Isothermal Method applied on ETFE-Foils 时间-温度漂移原理和阶梯等温法在etfe薄膜上的应用

10th edition of the conference on Textile Composites and Inflatable Structures Pub Date : 1900-01-01 DOI: 10.23967/membranes.2021.053

Jonas Hornig, Karsten Moritz, Benjamin König

{"title":"Time-Temperature-Shift Principle and Stepped Isothermal Method applied on ETFE-Foils","authors":"Jonas Hornig, Karsten Moritz, Benjamin König","doi":"10.23967/membranes.2021.053","DOIUrl":"https://doi.org/10.23967/membranes.2021.053","url":null,"abstract":"The application of the time-temperature shift (TTS) principle on plastic materials, especially viscoelastic polymers, has been known since a long time. This principle describes the influences of the parameters time (embodied by the strain rate) and temperature on the polymer’s mechanical behaviour (stress, strain, stiffness, strength values). In case of polymers that allow the application of the TTS both parameters obviously have an inversely proportional influence on the molecular chains and, therefore, on the mechanical properties of the material. The TTS allows the conversion of both parameters, but also the prediction of the mechanical behaviour in ranges that haven’t been tested. In case of ETFE-foils the TTS is the reason for their applicability in the building practice that means under snow loads with low strain rates and low temperatures and under wind loads at high strain rates and high temperatures. In both load case scenarios the materials stiffness and strength values keep in acceptable ranges. The TTS principle has been applied on ETFE foils in 2007 the first time [1]. The evaluation of an extensive parameter study in form of uniaxial short-term tensile tests was then used to derive a master curve and to formulate an ARRHENIUS-function for the mathematical description of the TTS of ETFE foils [2]. This function allowed the first time to predict the mechanical behaviour of ETFE","PeriodicalId":395358,"journal":{"name":"10th edition of the conference on Textile Composites and Inflatable Structures","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130601468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advantages of spline-based interfaces for fluid-structure interaction in balloon-type problems 球囊型流固耦合问题中基于样条界面的优点

10th edition of the conference on Textile Composites and Inflatable Structures Pub Date : 1900-01-01 DOI: 10.23967/membranes.2021.066

M. Make, T. Spenke, N. Hosters

引用次数: 0

The Making of HOWL by Anish Kapoor: a Fitting Inflated Sculpture Anish Kapoor的《嚎叫》:一个合适的充气雕塑

10th edition of the conference on Textile Composites and Inflatable Structures Pub Date : 1900-01-01 DOI: 10.23967/membranes.2021.025

A. Holstov, A. Bown

引用次数: 0

European ETFE-design – new findings and concepts 欧洲etfe设计-新发现和概念

10th edition of the conference on Textile Composites and Inflatable Structures Pub Date : 1900-01-01 DOI: 10.23967/membranes.2021.077

N. Stranghoener

引用次数: 1

Software defines Hardware – Topology of control systems for retractable roofs 软件定义可伸缩屋顶控制系统的硬件拓扑

10th edition of the conference on Textile Composites and Inflatable Structures Pub Date : 1900-01-01 DOI: 10.23967/membranes.2021.051

Pfeifer Systems Gmbh, Dr. Martin Jenni, T. Hermeking, Dr. Karl Lenz Strasse

{"title":"Software defines Hardware – Topology of control systems for retractable roofs","authors":"Pfeifer Systems Gmbh, Dr. Martin Jenni, T. Hermeking, Dr. Karl Lenz Strasse","doi":"10.23967/membranes.2021.051","DOIUrl":"https://doi.org/10.23967/membranes.2021.051","url":null,"abstract":"The scientific understanding of tensile technology in late XX century has arguably revolutionized the engineering design and the construction methods of structures with cables, ropes and tension rods. Adding envelope cladding with modern materials like membranes or ETFE foils large wide span structures are now achievable. The sheer size of wide span structures impacts also the electrical control systems required, as the digital world also is moving forward. While the electrical concepts of light systems are already commonly used for wide span structures, the drive systems for retractable roofs are still considered conservative as safety aspects have a high impact on these special drive systems. Nevertheless, the development of sophisticated communication languages, enhanced safety protocols in combination with outdoor suited hardware allows new control designs for drive systems of retractable roofs. Furthermore, the use of state of the art components like the latest generation of frequency controller and sensors using bus communication allow the development of safe and economical control systems on wide span structures. Two examples of different control system topologies are presented here with decentralized control topology of the retractable roofs at the SOFI stadium in Inglewood, US and the centralized control system topology at the Al Janoub Stadium in Al Wakrah, Qatar. SOFI Stadium uses a complete decentralized control system topology. With “Net” based co mmunication protocols and electrical components with “Net” interface” a communication network can be introduced between the active elements on the wide span structure. The freedom provided by the software of choosing the right hardware allows the optimization of the whole system under different topics like available space for electrical components, wiring, accessibility, maintenance and fast installation. The Al","PeriodicalId":395358,"journal":{"name":"10th edition of the conference on Textile Composites and Inflatable Structures","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122889450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Elastic behavior of a slender air tube combined with wires inspired by elongation of plant stem 受植物茎伸长启发的细长气管与导线结合的弹性行为

10th edition of the conference on Textile Composites and Inflatable Structures Pub Date : 1900-01-01 DOI: 10.23967/membranes.2021.016

T. Muto, K. Kawaguchi

引用次数: 0

Advances in the CAD-integrated design, analysis and verification of structural membranes 结构膜cad集成设计、分析和验证的研究进展

10th edition of the conference on Textile Composites and Inflatable Structures Pub Date : 1900-01-01 DOI: 10.23967/membranes.2021.002

A. Goldbach, K. Bletzinger

{"title":"Advances in the CAD-integrated design, analysis and verification of structural membranes","authors":"A. Goldbach, K. Bletzinger","doi":"10.23967/membranes.2021.002","DOIUrl":"https://doi.org/10.23967/membranes.2021.002","url":null,"abstract":"The design and analysis of structural membranes requires the adjustment of the interdependent analyses of formfinding, structural analysis and cutting pattern generation – also called the design cycle. Furthermore, the verification of stability has to be performed on the basis of stress and deformation results computed in structural analysis. Due to the lightweight nature of structural membranes and their characteristic interaction of form and force, the analyses of the design cycle need to account for geometrical as well as material non-linearities. CAD-integration enables designers and engineers to collaboratively work on one model for design and analysis purposes. The theory of Isogeometric Analysis was extended to Isogeometric B-Rep Analysis, in order to be able to assess the full B-Rep model within a CAD-environment for numerical analysis. This leads to the preservation of smooth NUBRS geometries and creates the possibility of conveniently linking consecutive analyses. Should changes of mechanical or geometrical model properties be necessary, these can automatically be forwarded to all design steps through these links. By additionally providing the possibility of working in a parametric framework and thus building models with parametric geometrical and mechanical properties, significantly enlarges the design space and exploration opportunities for structural membranes. This paper highlights the advantages of the parametric CAD-integrated design cycle for structural membranes. The possibility of creating the necessary links between the individual design cycle steps facilitates design and analysis and furthermore allows for a fast and efficient incorporation of requirements arising from verification. Selected examples will show the vast design space and flexibility offered to architects and engineers by the presented methods.","PeriodicalId":395358,"journal":{"name":"10th edition of the conference on Textile Composites and Inflatable Structures","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128426292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Consistent Algorithm for Tensegrity from Form-finding to Folding and Deployment Simulation with Common Scheme 张拉整体从找形到折叠的一致性算法及通用方案展开仿真

10th edition of the conference on Textile Composites and Inflatable Structures Pub Date : 1900-01-01 DOI: 10.23967/membranes.2021.045

C. Soe

引用次数: 0

Structural Design of Self-stressed Roof Structures using Vector-based Graphic Statics and Numerical Optimization 基于矢量图形静力学和数值优化的自应力顶板结构设计

10th edition of the conference on Textile Composites and Inflatable Structures Pub Date : 1900-01-01 DOI: 10.23967/membranes.2021.035

P. D’Acunto, P. Ohlbrock, T. Oberbichler

引用次数: 0