In the present study, non-linear finite element analyses are carried out on the slender reinforced concrete columns wrapped using CFRP composite with different cross-sectional shapes having the same area. Thickness of the CFRP wraps, concrete compressive strength, corner radius, loading condition, slenderness ratio and column size are the main parameters of this study. According to this, four d...

Steel-reinforced concrete (SRC) columns, which are classified as composite columns, became the most widely used in recent years; because of their extensive advantages over the reinforced concrete and the steel columns. In this paper, the ductility index and its influential factors were explored to investigate the behavior of SRC columns. A straightforward approach was then proposed by establish...

this paper focuses on using the recently developed extended finite element model for buckling analysis of edge cracked columns under concentric axial load. the effect of crack depth and its location on the carrying capacity of columns is studied. the effect of different boundary conditions is also investigated. numerical examples are offered to show the efficiency and effectiveness of the propo...

Eucalyptus nitens (E. nitens) has been much used for producing paper but also shows promise structural applications. In this study, static compressive tests were undertaken to examine its suitability be in an innovative composite column. The column was comprised of a rectangular steel tube with E. timber infill. nonlinear behaviour the filled wood both dry and wet conditions examined. same on t...

Using the BeppoSAX satellite we have obtained the first secure X–ray detection of the supernova remnant G0.9+0.1. The 1–10 keV spectrum can be described with an absorbed power law with α ∼ 3 and NH ∼ 3×10 23 cm. The high column density supports a distance similar to that of the Galactic Center. The X-ray emission, with a luminosity LX ∼ 10 35d210 erg s , coincides with the central radio core, c...