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Quasi-static simulations of thin space membranes, aiming at stability analyses of balloon-like structures
KTH, School of Engineering Sciences (SCI), Mechanics, Structural Mechanics.ORCID iD: 0000-0002-5819-4544
2011 (English)In: ECCOMAS Thematic Conference - COMPDYN 2011, 2011Conference paper (Refereed)
Abstract [en]

This paper discusses the evaluation of quasi-static equilibrium solutions for inflatable space membrane structures, such as balloons. A flat linearly interpolated triangular element is used for simulations, with a Mooney-Rivlin hyper-elastic material model, with variable constitutive constants. A compressible medium is used to introduce a one-parametric over-pressure loading within the membrane. Complex path-following procedures are used to find generalized equilibrium paths, with different parameterizations. Numerical examples show that the methods developed can give information on the stability of the structures, but that the medium and means for introducing the internal pressure is of importance for the interpretation of stability.

Place, publisher, year, edition, pages
, ECCOMAS Thematic Conference - COMPDYN 2011: 3rd International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering: An IACM Special Interest Conference, Programme
Keyword [en]
Compressible medium, Inflation, Path-following, Quasi-static equilibrium, Space membranes, Stability, Quasi-static, Civil engineering, Computational methods, Computer simulation, Earthquakes, Engineering geology, Flexible structures, Numerical methods, Structural dynamics
National Category
Other Mechanical Engineering
URN: urn:nbn:se:kth:diva-150721ScopusID: 2-s2.0-80054820836OAI: diva2:745461
3rd International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2011, 25 May 2011 through 28 May 2011, Corfu

QC 20140910

Available from: 2014-09-10 Created: 2014-09-09 Last updated: 2014-09-10Bibliographically approved

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