نتایج جستجو برای: winkler model

تعداد نتایج: 2105177  

Journal: :Materials research proceedings 2023

Abstract. In the present work, a two-dimensional model based on higher order Layer-Wise (LW) approach is presented for static and dynamic analysis of doubly-curved anisotropic shell structures. The Equivalent Single Layer (ESL) methodology also obtained as particular case LW. Each lamina stacking sequence modelled an continuum. fundamental equations account both surface concentrated loads, well...

Journal: :Mathematics and Mechanics of Solids 2022

The classical reduced model for film/substrate bilayers is the one in which film governed by Euler–Bernoulli beam equation, and substrate replaced an array of springs (the so-called Winkler foundation assumption). We derive a refined normal shear tractions at bottom are expressed terms corresponding horizontal vertical displacements, response half-space described exact theory. self-consistency ...

Journal: :Mathematics 2023

In this paper, a machine-learning model is utilized to estimate the temperature-dependent moduli of neat, thermally reduced graphene and covalently functionalized graphene/epoxy nanocomposites. addition, governed mathematical expressions have been used solve buckling problem beams fabricated from such nanocomposites in presence thermal gradient. order do so, an energy-based method including she...

Journal: :journal of chemical health risks 0
maryam jalili department of food industries and agricultural research, standard research institute (sri), karaj, iran faculty of health and nutrition, lorestan university of medical science, lorestan, iran

this study was intended to evaluate the quality of 30 honey samples, in terms of physicochemical properties such as moisture content, electrical conductivity, ash content, reducing sugars and sucrose, free acidity, ph, diastase activity, and hydroxymethylfurfural (hmf) content. moreover, three methods recommended by the international honey commission for the determination of hmf, including 1) h...

Journal: :فصلنامه علمی پژوهشی مهندسی مکانیک جامدات واحد خمینی شهر 0
alireza naddaf oskouee associate professor, school of mechanical engineering, university of imam hussein (as), tehran hadi mohammadi hoveyeh lecturer, department of mechanics, university eyvanakey, semnan vahid alaee ma, school of mechanical engineering, university of imam hussein (as), tehran k. vahedi associate professor, school of mechanical engineering, university of imam hussein (as), tehran

in this paper, asymmetric buckling analysis of functionally graded (fg) circular plates with temperature dependent property that subjected to the uniform radial compression and thermal loading is investigated. this plate is on an elastic medium that simulated by winkler and pasternak foundation. mechanical properties of the plate are assumed to vary nonlinearly by temperature change. the equili...

2012
Henry C. Bittig Björn Fiedler Tobias Steinhoff Arne Körtzinger

We present a laboratory calibration setup for the individual multi-point calibration of oxygen sensors. It is based on the electrochemical generation of oxygen in an electrolytic carrier solution. Under thorough control of the conditions, i.e., temperature, carrier solution flow rate, and electrolytic current, the amount of oxygen is strictly given by Faradays laws and can be controlled to with...

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