کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4917586 1362787 2018 11 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Auxetic nail: Design and experimental study
کلمات کلیدی
Auxetic; Nail; Timber; Finite element model; Plastic deformation;
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Auxetic nail: Design and experimental study
چکیده انگلیسی

•The first auxetic nails are designed, fabricated, and experimentally investigated.•The auxetic nails do not always exhibit superior mechanical performance to non-auxetic nails.•The surface roughness plays a significant role in the applications of auxetic nails.•Several criteria are proposed for the future design of auxetic nails.•Some disadvantages of auxetic materials are discussed.

Under uniaxial compression (tension), auxetic materials would shrink (expand) laterally. It has been speculated that the auxetic property could be used to design superior nails for easier push-in and harder pull-out. In this study, the first auxetic nails are designed, fabricated and experimentally investigated. Pine timber and medium-density fibreboard are selected as testing materials. The push-in and pull-out performance of auxetic and non-auxetic nails is compared by using two key parameters of the maximum compressive force and the maximum tensile force. It is found that the auxetic nails do not always exhibit superior mechanical performance to non-auxetic ones. Also, the small auxetic deformation of one typical designed auxetic nail is revealed by the experimentally validated finite element model. The experimental and numerical results illustrate the limitations of exploiting the auxetic property in the nail application. Some suggestions are provided for more effective designs of future auxetic nails.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 184, 15 January 2018, Pages 288-298
نویسندگان
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