The magnetorheological (MR) damper has attracted an increasing amount of attention in the field of vibration control because of its excellent adjustable damping performance. A modified model based on the modeling method of skeleton curve and hysteresis separation is proposed with sine and cosine mag...

In order to create an identification method of aerodynamic noise source of high-speed trains, based on the wave equation of aeroacoustics, the high-speed train aerodynamic sound source was equivalent to countless micro-spherical sound sources. Using the relationship between sound radiation and physi...

With the increasing running speeds of high-speed trains, the problem of aerodynamic noise is gradually becoming more prominent. Determination of a method to predict the far-field aerodynamic noise of high-speed trains accurately and quickly has therefore become an important aim. The far-field acoust...

The liftgate is generally installed and fixed to the vehicle body through hinges, lock pins, sealing and buffers, whose rigid body modes vibrations are coupled with the passenger acoustic cavity modes, which are the main cause of low frequency booming noise. In this paper, a one-dimensional plate-ca...

In order to characterize and quantify a person’s subjective perception of road impact sound, firstly, the acoustic time perception duration of the impact non-stationary noise signal of the speed bump condition was defined, and the acoustic time history was divided into the impact section, the peak s...

The original energy decoupling method is not suited to flexible double-layer vibration isolation systems, and therefore a multi-degree of freedom model is developed to represent the flexible characteristics of the equipment and intermediate mass. Then, on the basis of the model, a generalized elasti...

To improve the deterioration of combustion in the cylinder of diesel engines due to insufficient supercharging pressure under low operating conditions, two-stage turbocharging is combined with sequential turbocharging technology. First, the matching calculation of two-stage sequential turbocharging ...

The dynamic transmission characteristics of different types of high-speed track inspection vehicles are different, which makes the evaluation results of vehicle body acceleration on the same railway line different. To solve the above problem, the convolutional neural network (CNN) is combined with t...

The disc cutters located at the front end of a full-section tunnel boring machine (TBM) play an important role in the rock breaking process. The influence of the cross-sectional profile of the disc cutter on the rock fragmentation is important to study, to improve the TBM tunneling efficiency in eng...

In order to fully exploit the complex spatial-temporal dynamic correlation of traffic flow and improve the accuracy of traffic flow prediction, a spatial attention mechanism and an dilated causal convolutional neural network are introduced. A traffic flow prediction model STACNN based on spatial-tem...

In order to study the evolution rule of heterogeneous traffic flow under the background of IOV （internet of vehicles）, the concept of relative entropy in introduced to quantitatively describe the orderliness of heterogeneous flow, and analyze the inner link among orderliness, market penetration rate...

In order to realize the collaborative optimization of operation scheduling and resource allocation in molten iron transportation, based on the theory of the cumulative scheduling with constraint programming and lexicographic multi-objective optimization, a double-layer and multi-objective constraint...

To improve the accuracy of cumulative prospect theory in modeling travel mode choice, given the differences in individual attitudes toward time and costs, the time value function and time weight function of the original cumulative prospect theory model are optimized. Firstly, in view of the preferen...

The fatigue life and relaxation life of bolts affect their service life. Under the joint action of fatigue and relaxation, the connection at the column base is deteriorating. In order to explore the influence of the relaxation of connecting bolts on the fatigue life of high-speed railway sound barri...

Taking the mountainous terrain of the long-span suspension bridge as a typical example, the mean wind characteristics at bridge site in the mountainous terrain of a funnel-shaped canyon are studied, which provide a basis for the wind resistance design of large-span bridges in the funnel-shaped canyo...

The shelter effect of the bridge tower brings a sudden change of aerodynamic load on road vehicles passing by. For a single-level rail-cum-road bridge with larger scale of bridge tower in the longitudinal direction, the variation of the aerodynamic load is more intense. To explore the aerodynamic ch...

When an offshore streamlined box girder is close to the water surface, the aerodynamic performance is easily interfered by extreme wave boundary conditions. To investigate the aerodynamic performance of the streamlined box girder under interferences from extreme wave boundary, the extreme wave is si...

Longitudinal cracks of concrete caused by frost heaving of grouting slurry and free water in ducts is a special damage of post-tensioned PC girders in alpine regions, which affects the safety, serviceability, and durability of the structures significantly. In order to study damage characteristics, b...

The interlayer is the weak link of the ballastless track and the rainwater intrusion can aggravate the debonding damage. To study the distribution of hydrodynamic pressure in the interlayer crack of ballastless track under the high-speed train load, a planar calculational model is established, the e...

In order to promote the application of square concrete-filled double skin tube (SCFDST) columns with outer stainless steel tube in civil engineering, six groups of specimens with different outer tube thicknesses and different core concrete strength were tested under axial compression, and the failur...

To investigate the influence of snowdrifts on the flow field above low-rise building roof, the distributions of flow field above six different low-rise building roofs with or without snowdrifts were systematically analyzed through particle image velocimetry (PIV) experiments in wind tunnel combined ...

The horizontal slip layer in the hollow brick infilled wall can weaken the inclined bracing effect of the wall and effectively reduce the damage degree of the hollow brick infilled wall. In order to understand the out-of-plane stability of the frame hollow brick infilled wall with horizontal slip la...

The mesh woven with high-strength steel wires are widely used in fields of shallow geological disasters of slope and military engineering protection. As there are many weaving process parameters that affect the in-plane mechanical properties of the mesh, a refined numerical analysis can provide a ba...

In order to reveal the precipitation mechanism of covered Karst caves, the influence of the shape and size of the cave body and the internal law under the limit equilibrium, a common ellipsoid soil cave in straight collapse is investigated and its mechanical model of precipitation-induced subsidence...

In order to analyze the influence of the short fiber filaments and fiber mesh reinforcement on the mechanical property and frost resistance of foamed lightweight soil, a series of tests including unconfined compression tests, flexural strength tests, dynamic triaxial tests, and freeze-thaw cycle tes...

In order to study the heat and mass transfer behavior of saline soil in western cold-arid regions, firstly unsaturated sulfate saline soil experienced unidirectional freezing tests with no pressure recharge. In addition, while the latent heat of crystallization, crystallization impedance and crystal...

Determining the dynamic response characteristics of a subgrade under tram traffic loads is a key technical prerequisite for the design of embedded rail roadbed structures. First, a tram-embedded track-soil subgrade coupling dynamics model is established by considering the articulation forms between ...