کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5021528 | 1469374 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mechanically-prestressed bistable composite laminates with weakly coupled equilibrium shapes
ترجمه فارسی عنوان
ورقه های کامپوزیت دوتایی مکانیکی پیش پایدار با اشکال تعادل ضعیف شده
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کلمات کلیدی
ورقه ورقه ناهمسانگردی، استرس داخلی، مدل سازی تحلیلی، مورفین
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
چکیده انگلیسی
Fiber-reinforced asymmetric laminates fabricated at elevated temperatures may exhibit bistability at room temperature. The magnitude of deformation in each shape depends primarily on the curing temperature. This paper presents a novel asymmetric bistable laminate that is fabricated at room temperature and whose stable shapes are analogous to those of a thermally cured fiber-reinforced polymeric composite. The proposed laminate is composed of a stress-free isotropic core layer sandwiched between two asymmetric, mechanically-prestressed, fiber-reinforced elastomeric layers. Its stable shapes can be independently tuned by varying the prestress in each elastomeric layer. The mechanics of the laminate are studied using an analytical laminated-plate model that includes the geometric and material nonlinearities associated with large deformations caused by highly-strained elastomers. The effects of core modulus, core thickness, elastomer-core width ratio, and laminate size are examined through a parametric study. Laminate samples are fabricated in the 90°/core/0° configuration for model validation. The simulated stable shapes of the laminate are in agreement with the measured shapes. The dynamic response of the laminate during shape transition is measured using a motion capture system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part B: Engineering - Volume 111, 15 February 2017, Pages 251-260
Journal: Composites Part B: Engineering - Volume 111, 15 February 2017, Pages 251-260
نویسندگان
V.S.C. Chillara, M.J. Dapino,