Numerous existing formulas predicted the ultimate interfacial bond strength in concrete-filled steel tubes (CFST) between and concrete core without investigating whole response under push-out load. In this research, four models are proposed to predict behavior CFST including post-peak branch loading test based on 157 circular specimens 105 squared from literature. Two (one for one CFST) develop...

Electronic circular dichroism spectra transition energies and intensities were modeled using the independent particle model within the Kohn-Sham theory. The data obtained were compared with higher level calculations and experimental data. Since the model describes main features in the experimental spectra qualitatively well, it is being proposed as a fast and efficient simulation technique for ...

This paper describes the experimental and numerical study on axial compressive behaviour of circular-in-circular concrete-filled double-skin steel tube (CFDST) stub columns with large void ratio. Nine specimens various ratio (Rv), diameter-to-thickness outer (Do/to) strength concrete (fcu) were tested under compression. The failure patterns, load versus displacement (strain) relationship, ultim...

In this study, the mechanical properties of different CFST column shapes, including circular, rectangular, square, square with rounded corners, and triangular, are all analyzed compared using ANSYS R2 2021 software. Total deformation, equivalent stress in concrete steel, elastic strain characteristics various shapes also compared. axial load as well highest that columns can support. Comparing c...

Wrapping of carbon nanotubes (CNTs) by single-stranded DNA (ssDNA) was found to be sequence-dependent. A systematic search of the ssDNA library selected a sequence d(GT)n, n = 10 to 45 that self-assembles into a helical structure around individual nanotubes in such a way that the electrostatics of the DNA-CNT hybrid depends on tube diameter and electronic properties, enabling nanotube separatio...

The current work presents a unique study on the seismic performance of innovative corrugated-plate steel bridge piers. While several previous research was conducted tubes with cross sections such as rounded or semi triangular plates, structural members straight ribbed corrugation geometry under uniaxial cyclic loading remained gap. Thus, this aims to present new concept that could add promising...

Flow through circular orifices with thickness-to-diameter ratios varying from 0.015 to 1.2 is studied experimentally and numerically with kinetic and continuum approaches. Helium and nitrogen gases are used in the range of Reynolds numbers from 0.02 to over 700. Good agreement between experimental and numerical results is observed for mass flow and thrust corrected for the experimental facility...