پوسته های استوانه ای چند لایه FG-CNTRC با نسبت پواسون منفی
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پوسته های استوانه ای چند لایه FG-CNTRC با نسبت پواسون منفی

عنوان فارسی مقاله: ارتعاش دامنه گسترده ای از پوسته های استوانه ای چند لایه FG-CNTRC با نسبت پواسون منفی
عنوان انگلیسی مقاله: Large amplitude vibration of FG-CNTRC laminated cylindrical shells with negative Poisson’s ratio
مجله/کنفرانس: روشهای رایانه ای در مهندسی و مکانیک کاربردی - Computer Methods In Applied Mechanics And Engineering
رشته های تحصیلی مرتبط: مهندسی مواد
گرایش های تحصیلی مرتبط: مهندسی مواد مرکب، نانو مواد، شناسایی و انتخاب مواد مهندسی، متالورژی
کلمات کلیدی فارسی: نانوکامپوزیت ها، مواد طبقه بندی شده تابعی، نسبت پواسون منفی، خواص وابسته به دما، پوسته استوانه ای، لرزش
کلمات کلیدی انگلیسی: Nanocomposites، Functionally graded materials، Negative Poisson’s ratio، Temperature-dependent properties، Cylindrical shell، Vibration
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
نمایه: Scopus - Master Journals List - JCR
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.cma.2019.112727
دانشگاه: School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
ناشر: الزویر - Elsevier
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2020
ایمپکت فاکتور: 5/444 در سال 2019
شاخص H_index: 171 در سال 2020
شاخص SJR: 2/996 در سال 2019
شناسه ISSN: 0045-7825
شاخص Quartile (چارک): Q1 در سال 2019
فرمت مقاله انگلیسی: PDF
تعداد صفحات مقاله انگلیسی: 25
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: خیر
آیا این مقاله مدل مفهومی دارد: ندارد
آیا این مقاله پرسشنامه دارد: ندارد
آیا این مقاله متغیر دارد: ندارد
کد محصول: E14917
رفرنس: دارای رفرنس در داخل متن و انتهای مقاله
فهرست انگلیسی مطالب

Abstract


1- Introduction


2- Modeling of FG-CNTRC laminated cylindrical shells with NPR


3- Solution procedure


4- Numerical results and discussion


5- Concluding remarks


References

نمونه متن انگلیسی مقاله

Abstract


This paper presents an investigation on the nonlinear flexural vibrations of carbon nanotube-reinforced composite (CNTRC) laminated cylindrical shells with negative Poisson’s ratios in thermal environments. The material properties of the CNTRCs are temperature-dependent and the functionally graded (FG) in a piece-wise pattern in the thickness direction of the shell. An extended Voigt (rule of mixture) model is employed to estimate the CNTRC material properties. The motion equations for the nonlinear flexural vibration of FG-CNTRC laminated cylindrical shells are based on the Reddy’s third order shear deformation theory and the von Kármán-type kinematic nonlinearity, and the effects of thermal environmental conditions are included. The nonlinear vibration solutions for the FG-CNTRC laminated cylindrical shells can be obtained by applying a singular perturbation technique along with a two-step perturbation approach. The effects of material property gradient, the temperature variation, shell geometric parameter, stacking sequence as well as the end conditions on the vibration characteristics of CNTRC laminated cylindrical shells are discussed in detail through a parametric study. The results show that negative Poisson’s ratio has a significant effect on the linear and nonlinear vibration characteristics of CNTRC laminated cylindrical shells.


Introduction


Composite laminated shell structures are widely used in structural applications owing to their specific higher strength-to-weight and stiffness-to-weight ratios, improved chemical and environmental resistance and the ability to tailor properties. These shell structures may be exposed to combined action of loading and various environmental conditions during their service life. This may lead to large amplitude vibration of the shells where the shell deflection may be in the order of the shell thickness. In this regard, the nonlinear vibration of composite laminated shells in thermal environments is an important consideration in engineering analysis and design. Many studies have been carried out on the nonlinear vibration behavior of composite laminated shells [1–6]. As pointed out by Shen [6], unlike in the cases of composite laminated plates, there are unresolved discrepancies between the vibration results obtained by different authors for composite laminated cylindrical shells, in particular for the cases of angle-ply laminated cylindrical shells. With growing interest in the development and manufacturing of high-performance and lightweight composite shells, auxetic composite materials and structures appear to be potential candidates. A consequence of material possessing a negative Poisson’s ratio (NPR) is that many of its mechanical properties are predicted to be enhanced by classical elasticity theory. The auxetic materials have a wide variety of multifunctional applications, for example, in energy storage, biomedical, acoustics, photonics, and thermal management [7]. There are two ways to construct auxetic structures. One way is to use auxetic metamaterial as sandwich core [8]. Another way is to change the stacking sequence and orientation of the laminates to obtain auxetic laminated shells. The production of larger values of negative Poisson’s ratio requires both a particular stacking sequence and the individual ply material being highly anisotropic [9].

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