کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1717811 | 1520089 | 2015 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Zero Poisson's ratio flexible skin for potential two-dimensional wing morphing
ترجمه فارسی عنوان
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی هوافضا
چکیده انگلیسی
This study presents and examines the concept of flexible skins for two-dimensional morphing applications composed of a zero-Poisson cellular core and a hyperelastic face sheet. The overall properties of the flexible skins are mainly determined by the cell structure types and parameters. The in-plane mechanical properties of three different zero-Poisson cell structures were investigated with analytical, numerical and experimental methods to determine the most suitable cell structure for two-dimensional morphing. The geometric and material nonlinearity effects on the in-plane mechanical properties of the cell structures were also discussed. The material constants of a silicone rubber as flexible face sheet were then experimentally determined and its hyperelastic behaviors were simulated to find a better boundary condition in which uniform strain and larger global strain could be obtained. 98.6% global strain for span morphing and 9.2° angle change for sweep morphing were achieved in the simulation tests of integrated skin, which validates the two-dimensional morphing capacity of the passive sandwiched skin proposed in this article. For the actuation requirement of the passive skin, a shape memory alloy (SMA) based antagonistic actuator for span morphing was developed and tested. With 11.5% global strain finally achieved, the results, to certain extent, validates the feasibility of SMA actuator application to wing span morphing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aerospace Science and Technology - Volume 45, September 2015, Pages 228-241
Journal: Aerospace Science and Technology - Volume 45, September 2015, Pages 228-241
نویسندگان
Jinjin Chen, Xing Shen, Jiefeng Li,