The effect of fibre orientation on buckling behaviour in a rectangular composite laminate with central circular hole under uniform in-plane loading has been studied by using finite element method. The critical buckling loads with different fibre orientation in an orthotropic composite laminate (E-glass/epoxy) were obtained. The deformation behaviour of the plate is shown for modes, i=1,2. Studi...

Failure loads of sheet pile having various profiles such as U, Z and Omega/Hat under compression was carried out by using equations strength materials compared the failure load modes Euler’s buckling, torsional buckling due to yielding. Compared flexure finite element analysis. Sheet can be analyzed a unit cell for simplified For selecting with omega/Hat section profile containing one eight num...

This paper reviews a cyclic scheduling model of repetitive manufacturing environments consisting of exible machines and multi-stage jobs. We explicitly model two system performance measures, throughput and ow time, while incorporating variability arising from uncertainty in operation processing times. We present an iterative approximation scheme to estimate the two moment behavior of our perfor...

Although EBSD is essentially a surface measurement technique, strategies have been developed to extend its capabilities to the char-acterisation of microstructure in three dimensions. These developments have been able to be realised because of advances in both EBSD technology and computing power have rendered the collection of large data sets a routine matter. There are several scientific motiv...

unfortunately, the prevalence of cesarean section has increased in recent years. whereas awareness of the prevalence and causes is inevitable for planning and effective interventions, so aim of this study has designed and conducted for reviewing of systematic prevalence and caesarean causes in iran. in this meta-analysis, the required information have been collected using several keywords which...

in order to lighten the prestressed concrete solid members, nowadays, it is possible to make use of the advantage of hpc (fc'>60 mpa) as well as replacing the solid section with a psc thin-walled section for certain members such as circular and box columns. using the strength theory of aci, a numerical procedure along with a computer program was developed for the analysis of such sections ...

This article is devoted to the study of waveguide metal-dielectric structures in frequency range 90100 GHz with low losses up 0,05 dB/m. The paper considers effect sharp irregularities on a section regular line, which leads change parameters closed path. In practice, have negative impact transfer characteristic waveguide. Therefore, types often found modern devices were investigated. As result ...

Abstract Culverts are structures used in road and railway infrastructure works such as underpasses. Among the several forms of cross-sections, rectangular one (box culvert) has been mostly employed. However, when installed at high embankments, this structure shows values bending moment shear force, which tend to be amplified by soil arching. This paper addresses a study section culvert with an ...

In this paper, the stochastic aeroelastic stability analysis of a composite high aspect ratio wing with various elastic couplings is investigated. The consists rectangular spar-box made from materials. Due to its ratio, structure modelled using exact beam formulation, and aerodynamic loads acting on are simulated an unsteady lifting line theory. A cross section considered, effect effective para...