کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
277272 1430211 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bifurcation of a dielectric elastomer balloon under pressurized inflation and electric actuation
ترجمه فارسی عنوان
دوختن یک بادکنک الاستومر دی الکتریک تحت فشار و فشار الکتریکی
کلمات کلیدی
الاستومر دی الکتریک، دوختن، بی ثباتی، بالن های کروی، کشش غیرخطی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی

It is previously known that under inflation alone a spherical rubber membrane balloon may bifurcate into a pear shape when the tension in the membrane reaches a maximum, but the existence of such a maximum depends on the material model used: the maximum exists for the Ogden model, but does not exist for the neo-Hookean, Mooney–Rivlin or Gent model. This paper discusses how such a situation is changed when a pressurized dielectric elastomer balloon is subjected to additional electric actuation. A similar bifurcation condition is first deduced and then verified numerically by computing the bifurcated solutions explicitly. It is shown that when the material is an ideal dielectric elastomer, bifurcation into a pear shape is possible for all material models, and similar results are obtained when a typical non-ideal dielectric elastomer is considered. It is further shown that whenever a pear-shaped configuration is possible it has lower total energy than the co-existing spherical configuration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volumes 78–79, 1 January 2016, Pages 182–188
نویسندگان
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