Most natural and man-made fibers have circular cross-sections; thus the properties of materials composed of non-circular fibers are largely unexplored. We demonstrate the technology for fabricating fibers with predetermined cross-sectional shape. Passive hydrodynamic focusing and UV polymerization of a shaped acrylate stream produced metre-long fibers for structural and mechanical characterizat...

Abstract The behavior of box-shaped columns under heating is investigated. For this purpose, the various sections thin-wall were modeled and verified in different temperature ranges by ABAQUS software. results research showed that increasing thickness leads to increase buckling stability column change. Since will be better than thinner climate change because modulus elasticity. solid have hollo...

Cross-sectional measurement of particle velocity and concentration in a pneumatic conveying pipe is desirable for the characterisation flow dynamics determination mass rate. In this study, an inner-inserted electrostatic sensor array consisting nine pairs electrodes implemented to measure cross-sectional profiling particles over whole cross section square-shaped pipe. Experimental tests were co...

In this paper the eccentric forward extrusion of sections has been simulated and analyzed using FEM Abaqus-explicit. The results have been compared to those obtained from upper bound theorem and experimental works. Close agreements was observed between the FEM and experimental work and as compared with the upper bound data more realistic and better predictions were made by the authors’ method. ...

In this paper, the behaviour of pipe roof method with different roofs disposition schemes including gate system and L-shaped is discussed in terms ground settlement reduction condition underground space construction adjacent to existing structure by using numerical simulation method. Considering sequences parallel tunnels rectangular cross sections, appropriate parameters response characteristi...

Flexible cylinders, such as marine risers, often experience sustained vortex-induced vibrations (VIVs). Installing helical strakes on a riser is the most widely used technique to mitigate VIVs. This study was inspired by giant Saguaro Cacti which can withstand strong wind with shallow root system. In this study, numerical simulations of flow past stationary cylinder cactus-shaped cross-section ...