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Numerical modeling and buckling analysis of inflatable structures

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THÔNG TIN TÀI LIỆU

Cấu trúc

  • Couverture

  • Acknowledgments

  • Dédicace

  • Contents

  • List of Figures

  • List of Tables

  • Notations and conventions

  • GENERAL INTRODUCTION

    • Textile fabric composites

    • Inflatable structures

    • Stability of inflatable structures

    • Objectives

    • Thesis Outline

  • BACKGROUND

    • Textile structures and textile preforms

      • Context

      • Classification of textile preforms

    • Microscopic observation

      • Unit cell and geometric parameter

      • Stress transfer and characteristics lengths

      • Damage due to tensile loading

    • Prediction of engineering properties using micro-mechanics

    • Prediction of engineering properties using numerical approach

    • Experimental measurement of engineering properties

    • The role of experiments in structural stability

  • EXPERIMENTAL STUDIES

    • Introduction

    • Mechanical behavior of the fabric

      • Engineering constants

      • Strain measurement

    • Fabric tensile testing at our laboratory: Biaxial beam inflation test on fabric beam

      • Analysis of elastic moduli

      • Determination of shear modulus of HOWF composite

    • Experimental buckling of an inflatable beam

      • Introduction

      • Experimental buckling test on a simply supported HOWF beam

        • Test set-up and instrumentation

        • Boundary conditions

        • Measurement of displacements

    • Conclusion

  • ANALYTICAL BUCKLING ANALYSIS OF AN HOWF INFLATABLE BEAM

    • Introduction

    • Theoretical background

      • Kinematics

      • Constitutive equations

      • Virtual work principle

      • Theoretical buckling loads

      • Previous works on the critical load

    • Examples: in-plane buckling for linearized problems

      • Simply supported inflatable beam under compressive concentrated load

      • Cantilever inflatable beam under compressive axial load at the free end

      • Clamped-clamped inflatable beam under compressive axial load

    • Influence of the slenderness ratio on the critical load of an inflatable beam

    • Wrinkling load for an inflatable beam under a compressive concentrated load

    • Conclusion

  • FINITE ELEMENT BUCKLING ANALYSIS OF AN HOWF INFLATABLE BEAM

    • Literature review

    • Finite element formulations

      • Linear eigen buckling

      • Nonlinear buckling

      • Implementation of an iterative algorithm for solving the NLIBFE model

    • Applications and results

      • Linear eigen buckling

      • Nonlinear buckling of a simply supported NLIBFE model

        • Wrinkling loads and maximum deflections: Limit of validity for numerical solutions

        • Validation of the NLIBFE model: the reference model

        • Comparison with the experimental results

        • Parametric studies of NLIBFE model

    • Conclusion

  • GENERAL CONCLUSION AND FUTURE WORK

  • Appendices

  • Reminders in mechanics and material science

    • Mechanical properties of composite materials

    • Hyperelasticity: theoretical basis

    • Hyperelasticity and orthotropic materials

      • Orthotropic materials

      • St. Venant-Kirchhoff orthotropic material

    • Thin-walled structures : thin-shells and membranes

  • Theoretical model

  • Nonlinear finite element model

  • Bibliography

  • Résumé

  • Abstract

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