عنوان	Dynamic instability analysis of general shells reinforced with polymeric matrix and carbon fibers using a coupled IG-SFSM formulation
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Laminated composite,Carbon nanotube (CNT),Fiber/Polymer/CNT,Dynamic stability of shells,Thermal environment,Isogeometric finite strip method (IG‐SFSM)
چکیده	In the present article, the dynamic instability of shells subjected to periodic in‐plane and external pressure loadings in thermal environment is considered. The considered shells are made of laminated composite of carbon fibers and the reinforced polymeric matrix by randomly oriented carbon‐nanotubes (CNTs) which is functionally distributed in each layer. Consequently, the considered material is made of three phases of fiber/polymer/ CNT. The extended governing equilibrium and compatibility equations are solved by a coupled formulation which combines the isogeometric analysis (IGA) and finite element method (FEM) in two orthogonal direction of the parametric space. Since the proposed coupled IGA‐FE method is developed in form of the finite strip (FS) elements, it is named isogeometric B‐spline finite strip method (IG‐SFSM). In order to perform the parametric studies, the effects of various geometrical and mechanical properties, boundary conditions and temperatures are considered. The obtained results show that IG‐SFSM is an applicable method for dynamic instability assessment of the shells which can reduce the computational efforts comparing to the other prevalent methods such as FEM and element‐free family, and also reduce the restrictions and shortcomings of the standard IGA methods.
پژوهشگران	محمدامین شاه محمدی (نفر اول)، مجتبی ازهری (نفر دوم)، محمد مهدی سعادتپور (نفر سوم)، حمزه صالحی پور (نفر چهارم)، عمر سیوالک (نفر پنجم)