Traditional studies typically employed random and deliberate attack methods to explore port failure, overlooking real-world factors. In this research, we focus on exploring the reliability of Maritime Silk Road (MSR) container shipping networks after failure Chinese coastal ports due impact typhoons. This article analyzes AIS trajectory data typhoon occurrence through entropy weight method grey correlation analysis, construct an evaluation model for critical ports. Then, will look at effects...

Based on the macroscopic structure control theory, The slate with a significant bedding plane is composite rock mass composed of blocks containing microscopic defects, joint surface closure elements, and shear deformation elements. Considering coupling damage effect water erosion triaxial compressive load plane, transversely isotropic constitutive model under derived dip angle confining pressure as variable. Firstly, based statistical theory continuous mechanics maximum tensile strain...

Due to the special properties of ammonium salts, acetate and citrate were used explore best leaching conditions rare earth with compound carboxylate. This paper explored influence molar ratio, concentration, experimental temperature, pH agents on efficiency aluminum, it analyzed process based kinetics, which provides a new method for from weathered crust elution-deposited ore. The results showed that under where ratio was 7:3 concentration 0.15 mol/L, highest when agent 4.0 temperature 313...

In view of the problem that anchored bedding rock material is prone to instability and failure under impact loading in process deep coal mining, taking lower roadway a 2424 working face Suncun mine as engineering background, mechanical model was established, criterion compression shear obtained. Then, separated Hopkinson pressure bar used carry out an impact-loading test on material, dynamic properties with different anchoring modes bolt angles were studied; evolution law strain field also...

Oyster reef living shorelines are popular solutions to mitigate coastal hazards while providing ecosystem services, and their hydrodynamic characteristics deserve further examination. This paper reports an experimental numerical study of the behavior a bagged oyster shell (BOS) under regular waves. The dependence pore pressure within coefficients on height, length, porosity, wave parameters investigated. results show that normalized maximum ps_m∗ decreases from seaside BOS its leeside with...

We analyse the static responses of a circular curved beam bonded with single piezoelectric actuator or symmetric actuators. also study characteristics control parameters for displacement cantilever via actuators in this paper. The uniform is thin and actuated by layers. unimorph bimorph equivalent to single-layer structure. governing equations these structures small curvature are derived based on one-dimensional theory. analysis segmented undergoing radial concentrated load bending moment...

This paper presents experimental investigations on film cooling performance under rotation in a low-speed 1.5-stage turbine using the thermochromic liquid crystal (TLC) technique. The experiment was accomplished test facility which recently established to study rotating realistic stages. Eighteen blades of chord length of0.1243 m and height 0.099 were installed rotor. A hole with diameter 0.004 m, angled 28° 36° tangentially pressure surface suction streamwise, respectively, set middle span...

Experimental investigation has been performed to study the leakage and wear characteristics of carbon seal working at high circumferential speed. To expand scope application, two newly designed seals were compared: #1 Carbon Seal (CS1) with inner diameter 136 mm including 4 segments, #2 (CS2) 212 6 segments. Air tests firstly conducted in Medium-speed Test Rig. The pressure ratio changed from 1.04 2.02 rotating speed varying 0 18300 r/min. Of paramount concern was durability test, 300 h...

To solve these problems of poor supporting effect and serious deformation failure surrounding rock mining roadway under deep stress, a FLAC-3D numerical calculation model is established with -800 m level no. 2424 upper in the Suncun Coal Mine as background to compare deformation, law once support multi-level same strength. It found that technology has obvious advantages horizontal on working face. From this, key parameters are determined, field industrial test carried out. The results show...

Abstract Under the influence of secondary flow, film cooling deviates from flow direction on turbine blade, which directly results in undesirable uneven coverage. On pressure side, appears divergent, while suction it is bunched. To solve this problem, a kind subregional compound angle proposed, spanwise different regions depending strength and flow. Four rows holes with five kinds angles are provided two side. The Reynolds Average Navier–Stokes (RANS) method SST k–ω turbulence model chosen...

Metro platform is a narrow space, poor air quality inside. In order to reduce internal pollution, this article created new metro ventilation and conditioning system. This system makes the subway be effective within pollutants excluded out of indoors, energy saving. A significant was created, which compared original system, not only pollution but also save more energy.

In order to optimize the design method and improve performance of hydraulic retarder, numerical simulation multi-field coupling heat, fluid solid is carried out based on computation algorithm heat-fluid fluid-solid coupling. The models retarder are created. three dimensional model established CATIA software, whole flow passage extracted basis established. Based CFD calculation finite element simulation, temperature field, stress deformation state analysised in filling when rotate speed 1600...