کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
498306 862985 2012 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Instability of hyper-elastic balloon-shaped space membranes under pressure loads
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Instability of hyper-elastic balloon-shaped space membranes under pressure loads
چکیده انگلیسی

This paper discusses the evaluation of quasi-static equilibrium solutions for inflatable space membrane structures. A Mooney–Rivlin hyper-elastic material model, with variable constitutive constants, is considered. A compressible weightless medium is used to introduce within the membrane a one-parametric over-pressure loading compared to an ambient pressure. Analytical instability results are shown for a spherical and derived for a cylindrical case. These are compared to numerical simulations based on a flat linearly interpolated triangular space membrane element. 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 membranes, but that the medium and means for introducing the internal pressure are of importance for the interpretation of stability.


► We study the inflation of thin space membranes subjected to internal over-pressure.
► We use both analytical and FE methods for the balloon studies.
► We study the instability behavior with respect to the loading mechanism.
► Numerical simulations are based on a simple 3D element.
► The simulation of all instabilities demand sophisticated path-following.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volumes 237–240, 1 September 2012, Pages 118–129
نویسندگان
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