Table of Contents
Preface vii
Innovative Developments in Fiber Based Materials for Construction 1
T. Stegmaier and H. Planck
Finite Element Simulation of the Mechanical Behaviour of Textile
Composites at the Mesoscopic Scale of Individual Fibers 15
D. Durville
A Predictive Fabric Model for Membrane Structure Design 35
B.N. Bridgens and P.D. Gosling 51
D. Ballhause, M. Konig and B. Kroplin
Introducing Cutting Patterns in Form Finding and Structural Analysis 69
J. Linhard, R. Wuchner and K.-U. Bletzinger
Kinematics in Tensioned Structures 85
R. Wagner
Pneumatic Formwork for Irregular Curved Thin Shells 99
P.C. van Hennik and R. Houtman
Static Analysis of Taut Structures 117
R.M.O. Pauletti
Analysis of Free Form Membranes Subject to Wind Using FSI 141
Modelling Fabric-Reinforced Membranes with the Discrete Element Method
R. Wuchner, A. Kupzok and K.-U. Bletzinger
Membrane Structures Formed by Low Pressure Inflatable Tubes.
New Analysis Methods and Recent Constructions 163
E. Onate, F.G. Flores and J. Marcipar
Nonlinear Finite Element Analysis of Inflatable Prefolded Membrane
Structures under Hydrostatic Loading 197
M. Hasler and K. Schweizerhof
Advanced Capabilities for the Simulation of Membrane and Inflatable Space
Structures Using SAMCEF 211
P. Jetteur and M. Bruyneel
Structural Air – Pneumatic Structures 233
B. Stimpfle
Recent Developments in the Computational Modelling of Textile Membranes and Inflatable Structures 253
D. Strobel and P. Singer
Author Index 267
Subject Index 269
Preface
The objective of this book is to collect state-of-the-art research and technology for design, analysis, construction and maintenance of textile and inflatable structures.
Textile composites and inflatable structures have become increasingly popular for a variety of applications in – among many other fields – civil engineering, architecture and aerospace engineering. Typical examples include membrane roofs and covers, sails, inflatable buildings and pavilions, airships, inflatable furniture, and airspace structures.
The ability to provide numerical simulations for increasingly complex membrane and inflatable structures is advancing rapidly due to both remarkable strides in computer hardware development and the improved maturity of computational procedures for nonlinear structural systems. Significant progress has been made in the formulation of finite elements methods for static and dynamic problems, complex constitutive material behaviour, coupled aero-elastic analysis, and so on.
The book contains 14 invited contributions written by distinguished authors who participated in the Second International Conference on Textile Composites and Inflated Structures held in Stuttgart from 2nd to 4th October 2005. The meeting was one of the Thematic Conferences of the European Community on Computational Methods in Applied Sciences (ECCOMAS).
The different chapters discuss recent progress and future research directions in new textile composites for applications in membrane and inflatable structures. Part of the book focuses in describing innovative numerical methods for structural analysis, such as new non linear membrane and shell finite elements. The rest of the chapters present advances in design, construction and maintenance procedures. The content of the different chapters was sent directly by the authors and the editors cannot accept responsibility for any inaccuracies, comments and opinions contained in the text. The editors would like to take this opportunity to thank all authors for submitting their contributions. We also express our gratitude to Maria Jesús Samper from CIMNE (www.cimne.com) for her excellent work in editing this volume. Many thanks finally to ECCOMAS and Springer for accepting the publication of this book.
Innovative Developments in Fiber Based Materials for Construction
Thomas Stegmaier and Heinrich Planck
Institute of Textile Research and Process Engineering Denkendorf (ITV), Center of
Competence for Technical Textiles Denkendorf, Germany;
E-mail: thomas.stegmaier@itv-denkendorf.de
Abstract. Fiber based materials for construction are in a continuous development. Due to the progress in polymer science and knowledge in process engineering important properties can be improved continuously or sometimes in great steps.
ITV Denkendorf in the south of Germany, close to Stuttgart, is here in charge for improvements, testing and for the development of new materials. A comprehensive industrial and scientific network with competent partners is the best base. In this chapter some examples are given from successful material developments in the research fields of fiber spinning, textile formation, coating, testing and numerical simulation with improved material properties for construction applications like: reduced ageing by new coating processes; selfcleaning surfaces based on bionic knowledge; barrier functions against heat, sound, temperatures, electromagnetic waves.
Special materials for new applications are in the field of smart materials, renewable energies, lightweight for mobile applications.
Key words: plasma, coating textiles, selfcleaning, Lotus-Effect, FEM, electromagnetic waves, thermal spraying, textile composites, smart materials, lightweight, renewable energy.