By combining experiments performed on nanoribbons in situ within a high-resolution TEM with objective molecular dynamics simulations, we reveal common mechanisms in the bending response of few-layer-thick hexagonal boron nitride and graphene nanoribbons. Both materials are observed forming localized kinks in the fully reversible bending experiments. Microscopic simulations and theoretical analy...

Four-roll bending process is usually used for manufacturing of seamed thick-walled and thin-walled cylinders. Due to complexity of this process, the analytical solution of plate bending in this process has not been developed completely. The existence of friction and multi-step processing makes it more difficult. Investigation of four-roll bending process using analytical and numerical methods i...

Based on an innovative high-speed railway simply supported bridge (HSRSSB) model, the potential influence of near-fault pulse-type ground motions HSRSSB is analyzed. Eighty-five original records such are imposed simulation model. The dynamic responses calculated, including girder displacement, rail pier bending moment, bearing deformation, and residual displacement. Linear regression analysis r...

Housing is important for the welfare of cows. Although recommendations have been proposed, abnormal movements and injury problems are still observed in cubicle houses. We conducted a survey on 70 French dairy farms that used cubicles. We examined the design of the cubicles, and the behavior, injuries, and cleanliness of the cows. Most of the cubicles did not comply with the recommendations, oft...

Pearlitic steel experiences excessive corrosion in a hot and humid atmosphere. The multiphase bainitic/martensitic structure was developed for better combination of strength ductility, especially rolling contact fatigue, but little attention to has been investigated. Corrosion behaviors steels obtained from bainitic-austempering (BAT) bainitic-quenching -partitioning (BQ&P) processes were i...

adhesion level for the proper running of rail wheelset on track is crucial problem in detecting slippage to avoid accidents. the slippage of rail wheels has been observed applying forward and lateral motions to slip velocity and torsion motion. the longitudinal and lateral forces behavior is watched with respect to traction force to note correlation based on angle of attack. the deriving torque...

Abstract As the first study in field regarding CB, this paper investigates implications of interchanging between RDB and CB through manufacturing bends with various angles difference two methods form springback, cross section compression widening, shape wall thinning/thickening. The experiments conducted consists aluminum alloy 6060-T4 round tubes 60 mm diameter 3 thickness, bent around 222 rad...

The effect of an electric field on the bending behavior of [001] oriented and poled relaxor Pb(In1/2Nb1/2)O3–Pb(Mg1/3Nb2/3)O3–PbTiO3 (PIN–PMN–PT) single crystals was measured using a four point bending apparatus with a longitudinal electric field applied to the bar during bending. The surface finish and electric field amplitude were observed to affect the bending strength. Polished surfaces imp...

Under the background of urban rail transit’s rapid development, urban rail transit station, as the only connection of urban space and rail transit, undertakes the responsibility of traffic organization and passenger volume distribution. Influenced urban realm around station becomes the focus of the optimization of the sustainable urban development. Pedestrian microscopic simulation method estab...

The author investigated the status of barrier-free facilities of urban rail transit station in China. Due to the physical factors, the senior and disability population fail to utilize urban traffic facilities, like ordinary persons. Also, children, women of pregnancy, and those who have mobility difficulties, and those who bear heavy loads are also not able to conveniently use urban traffic fac...