We demonstrate experimentally the continuous and pulsed loading of a slow and cold atomic beam into a magnetic guide. The slow beam is produced using a vapor loaded laser trap, which ensures two-dimensional magneto-optical trapping, as well as cooling by a moving molasses along the third ...
In the fracture study of softening materials,the damage area of crack tip is regarded as a piece of nonlinear crack with cohesive force.The cohesive force has resistant effect on the crack extension.The stress intensity factor of crack solids is a fracture mechanics index that denotes the effect...
Erki, M. A.,Meier, U.摘要: The quasi-static behavior of flexural members strengthened with carbon fiber reinforced polymer (CFRP) laminates has been well documented in recent years, but there is a gap in knowledge regarding the effects of dynamic and impact loading of such members. This ...
The dynamic response of a simply supported lattice truss core sandwich beam with axial restraints subjected to uniform transverse impulsive loadings was studied through rigid-plastic analytical model and elastic-plastic finite element(FE) calculation.Firstly,the maximum deflections of the sandwich beam pred...
Furthermore, the existence of additional bars showed more necessity in such a system than the detail of making a certain length of the two bottom deformed bars debonded. Finally, a theoretical analysis curve was proposed. 展开 关键词: beam-to-column connection cyclic loading precast concrete ...
Methods, devices, and systems have various user equipment (UE) for reading multimedia broadcast and multicast service (MBMS) notifications via one or more paging indicators of a Paging Indication Channel (PICH). The paging indicators of ... SHUGONG XU - WO 被引量: 171发表: 2008年 Stratus: ...
Under internal blast loading, the response of a beam or plate is highly correlated with the phenomenon of saturated impulse, which governs the deflection of the structure. This paper aims to investigate the phenomenon of saturated impulse for fully clamped rectangular plates subjected to internal blas...
This paper presents the results of localised blast tests on fully clamped square fibre–metal laminate panels, manufactured using sheets of 2024-O aluminium alloy, woven glass–fibre reinforced polyamide and a polypropylene adhesive. The fracture properties of the composite–metal interface were determine...
Three-point bending tests on notched beams of three types of steel fiber-reinforced self-compacting concrete (SFRSCC) have been performed by using both a servo-hydraulic machine and a drop-weight impact instrument. The loading rates had a range of six orders of magnitude from 2.20×10^-3 mm...
A theoretical model was developed for beams with viscoelastic supports under moving loading.A 3D finite element model of multi-beam systems was also developed.Results of the theoretical model agree with that of the FE model.Influence of a number of structural parameters was then discussed for desig...