کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5014580 1463303 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fiber micro-architected Electro-Elasto-Kinematic muscles
ترجمه فارسی عنوان
عضلات الکترو الاستو کینماتیک میکرو میکروسکوپ فیبر
کلمات کلیدی
پلیمرهای الکتریکی الاستومر دی الکتریک، اعمال بی نهایت، عضلات مصنوعی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
چکیده انگلیسی
Electro-active polymers (EAP) such as dielectric elastomers can reproduce biomimetic functions requiring micro-scale actuation such as color and texture change, or tunable wetting and adhesion. For these applications, large actuation strains and energy density are required. Recent studies with fiber reinforced elastomers demonstrated the ability to obtain anisotropic in- and out-of-plane actuation in macro-scale elastomer membranes. We design a new class of fiber micro-architected elastomers capable of anisotropic actuation in the two orthogonal in-plane directions under uniform electrostatic field. We reinforce the two sides of a pre-stretched VHB film with parallel arrays of stiff ultra-high molecular weight polyethylene fibers. By controlling the spacing and bias angle between the fibers, we create diamond shaped unit cells of 100-300 um size, and demonstrate a wide range of kinematics showing maximum extension of 26% at 45° and maximum contraction of −6.3% at 65° at maximum efficiency of 15%. We call these devices Micro-architected Electro-Elasto-Kinematic muscles (MEEKs). We use analytical modeling and finite element analysis to explain the observed actuation kinematics and the associated non-homogeneous strain distribution. We expect this principle to be suitable for micro-actuation and smart skins where anisotropy can be advantageous.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Extreme Mechanics Letters - Volume 8, September 2016, Pages 64-69
نویسندگان
, ,