Vibration and Flutter of a Honeycomb Sandwich Plate with Zero Poisson’s Ratio

نویسندگان

چکیده

A honeycomb is a kind of excellent lightweight structure and sandwich plate with zero Poisson’s ratio (ZPR) core used widely in morphing structures. In this paper, composed analyzed for free vibrations flutter under supersonic airflows. The equivalent elastic parametric formulas the are proposed. models compared their natural frequencies by theoretical finite element methods respectively, which verifies validity model ratio. influence geometric parameters on vibration obtained. Three kinds cores, namely, regular hexagon, auxetic hybrid ratio, through plate. It found that frequency second one when other same. using first order piston theory flows. critical velocity obtained, velocities

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Deflection and Free Vibration of Sandwich Panel with Honeycomb Core on Winkler Elastic Foundation

In this paper deflection and free vibration of sandwich panel is studied. The core of Sandwich panels is made of hexagonal honeycomb and faces are made of two different materials of Carbon Fiber Reinforced Plastic and K-aryl/epoxy covering. The governing equations are deduced from the First order Sheer Deformation Theory (FSDT) and they are solved using Generalized Differential Quadrature Metho...

متن کامل

deflection and free vibration of sandwich panel with honeycomb core on winkler elastic foundation

in this paper deflection and free vibration of sandwich panel is studied. the core of sandwich panels is made of hexagonal honeycomb and faces are made of two different materials of carbon fiber reinforced plastic and k-aryl/epoxy covering. the governing equations are deduced from the first order sheer deformation theory (fsdt) and they are solved using generalized differential quadrature metho...

متن کامل

Quasi-static Punch Indentation of a Honeycomb Sandwich Plate: Experiments and Modelling

Punching experiments on wide honeycomb sandwich beams were performed to evaluate the predictive capabilities of a newly developed constitutive model in structural applications. The employed constitutive model for plastically com-pressible orthotropic materials accounts for both non-uniform hardening and softening associated with stressing in different directions. This feature is vital when asse...

متن کامل

A Theoretical and Experimental Study of Failure Maps of Sandwich Beams with Composite Skins and Honeycomb Core

Failure maps of sandwich panels such as beam, plate and shell are of great importance in designing such structures. In this paper, failure maps of sandwich beams with composite skin and honeycomb core are obtained. The effect of transverse shear in skins and core and the effect of double walls of honeycomb core have been taken into account. Shear deformation of skins and core are assumed to be ...

متن کامل

a comparison of teachers and supervisors, with respect to teacher efficacy and reflection

supervisors play an undeniable role in training teachers, before starting their professional experience by preparing them, at the initial years of their teaching by checking their work within the proper framework, and later on during their teaching by assessing their progress. but surprisingly, exploring their attributes, professional demands, and qualifications has remained a neglected theme i...

15 صفحه اول

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Mathematics

سال: 2021

ISSN: ['2227-7390']

DOI: https://doi.org/10.3390/math9192528