University of Architecture, Civil Engineering and Geodesy

About: University of Architecture, Civil Engineering and Geodesy is a education organization based out in Sofia, Bulgaria. It is known for research contribution in the topics: Finite element method & Beam (structure). The organization has 3808 authors who have published 3822 publications receiving 30736 citations. The organization is also known as: Sofia Polytechnic.

Adsorption of Methyl Orange Dye Onto Multiwalled Carbon Nanotubes

Abstract: The adsorption of methyl orange dye (MO) on multiwalled carbon nanotubes (MWCNTs) from aqueous solutions was investigated in a batch stirred cell. The effects of temperature, stirring speed, MO concentration, MWCNT mass on MO adsorption were investigated. The results showed that the MO adsorption increased with its concentration in the aqueous solutions. MO adsorption also increased with temperature. The MO removal from the solution increased as MWCNT mass increases. The kinetic study demonstrated that MO adsorption on MWCNTs was in a good accordance with the pseudo-second-order kinetic model.

A simple FSDT-based meshfree method for analysis of functionally graded plates

Abstract: Modeling of mechanical behavior of plates has been accomplished in the past decades, with different numerical strategies including the finite element and meshfree methods, and with a range of plate theories including the first-order shear deformation theory (FSDT). In this paper, we propose an efficient numerical meshfree approach to analyze static bending and free vibration of functionally graded (FG) plates. The kinematics of plates is based on a novel simple FSDT, termed as S-FSDT, which is an effective four-variable refined plate theory. The S-FSDT requires C 1 -continuity that is satisfied with the basis functions based on moving Kriging interpolation. Some major features of the approach can be summarized: (a) it is less computationally expensive due to having fewer unknowns; (b) it is naturally free from shear-locking; (c) it captures the physics of shear-deformation effect present in the conventional FSDT; (d) the essential boundary conditions can straightforwardly be treated, the same as the FEM; and (e) it can deal with both thin and thick plates. All these features will be demonstrated through numerical examples, which are to confirm the accuracy and effectiveness of the proposed method. Additionally, a discussion on other possible choices of correlation functions used in the model is given.