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In seismic response process, the overburden of gravitational can greatly affect on the structural seismic response.
Although it seems that this method do not consider the various interaction factors among ground, foundation and superstructure, but actually in the calculation process the interaction effects already are considered automatically.
Among them the Finite Element Method can truly simulate the mechanical properties of the soil and structure, and it can process various complex geometric shape and loading.
At same time, because the soil’s constitutive relationship is very complex especially under dynamic action, then what kind of constitutive relation soil adopts will deeply affect the interaction system analysis.
Soil-structure interface belongs to the contact between different mediums, and its mechanical mechanism is still not completely understood, and it also needs to be further research and experiment.

So, adjusting driving/braking force is widely used to improve the dynamic property of vehicles and enhance their stability.
Sliding mode control has the advantage of robustness features against possible disturbances and parameter variations affecting the vehicle model, and it will produce low complexity control laws compare to other robust control method [2].
Establishing the vehicle model, it should be fully consider the main factors affect vehicle handling and stability that the model can exactly descript the vehicle dynamic, while it should be as simple as possible that it can meet the requirement of real-time calculation.
Advanced Sliding Mode Control for Mechanical Systems[M].Beijing：Tsinghua University Press,2011：19-25.s

Analysis and Simulation on Dynamic Stress of Tracked Vehicle Sprocket Based on Rigid-flexible Coupling Bing Chen a, Zheng Tian b, Zhong Jun Yin c Mechanical Engineering School of University of Science & Technology of Beijing, Beijing 100083, China abingchen9803@ustb.edu.cn, balso_ran@163.com, cyinzhongjun@ustb.edu.cn Keywords: Tracked Vehicle; Sprocket Gear Ring; Rigid-Flexible Coupling; Dynamic Stress Abstract: This paper established a high-speed tracked vehicle dynamics model, and simulated the transient response of sprocket when the vehicle is running at 60km/h on the D class road. the finite element model of the single tooth in mesh is established in Ansys and the rigid-flexible coupling model of "trackboard- sprocket" is established in RecurDyn.
Fig.1 The force analysis of engagement pair Fig.2 The interaction between sprocket and pins when the vehicle is running at 60km/h on the D class road Load Simulation of Sprocket Because the interaction force between track pins and gear ring of sprocket is affected by various factors, and the number of track pins is large, the theoretical calculation of the force is difficult.
Rigid-flexible Coupling Model The .cdb file which contains unit property and material property is input into RecurDyn.

Preface At present , domestic and international frame - shear wall structure construction of vertical deformation and internal force of study is not yet in-depth . [1] for the mechanical characteristics of high-rise buildings , shrinkage and creep analysis of simplified models for the frame and shear wall structure .
A practical engineering analysis of the object , analysis of the construction process and the vertical deformation of the impact of difference on the frame - shear wall structural internal force to come to these factors frame - shear wall structure internal force of the impact of law on this basis for the structural analysis of high-rise buildings and design a reasonable proposal.
Were purely elastic deformation calculation condition (but consider the changes in the elastic modulus of concrete and strength ), the transition properties (including modulus of elasticity of concrete , consider the material strength and shrinkage and creep ) and whether to consider the construction process of leveling a total of four .
Due to shrinkage and creep effect of the cumulative vertical deformation of the poor growth rate shows comparison between the various vertical elements , whether or not to consider the construction of leveling , and only consider the elastic deformation of the cumulative vertical deformation difference compared to consider shrinkage and creep affect cumulative vertical deformation difference increases markedly, an increase of about 53% to 59% .

Growth Kinetics and Microstructure of Siliconized Layer by Molten Salt Electrodeposition Haili Yang1,2,a, Changwei Cui 1,b Yungang Li 1,c, Guozhang Tang1,d and Yuzhu Zhang 1, 2,e 1 Hebei key Laboratory of Modern Metallurgy Technology, College of Metallurgy and Energy, Hebei Polytechnic University, Tangshan, 063009, China 2 College of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, China asjmsxmhl@126.com, bccw1234@163.com, clyg@heut.edu.cn, dtgz@heut.edu.cn, ezyz@heut.edu.cn Keywords: Growth kinetics, Microstructure, Siliconized layer, Electrodeposition Abstract.
Introduction Siliconizing shows a wide application in the field of engineering because the siliconized layer has a considerable number of practical applications and fundamentally interesting properties.
(2) where K0 is called the collision factor and is a measure of the effectiveness of collisions between reacting species, Q is an activation factor which indicates the amount of energy (J/mol) required to make the reaction occur, T is the absolute temperature in Kelvin and R is the gas constant (J/mol K).
From Fig. 5a, b, c, d and e, we could see that the deposition time affected the grain size, a longer deposition time tended to produce a larger grain and a looser, rougher layer.

Rubber material parameter measurement in Mooney-Rivlin constitutive model At present, some large general nonlinear finite element program, such as Ansys, Marc, Nastran and Adina etc, use Mooney-Rivlin constitutive model to analyze and calculate the rubber material mechanical properties.
Table 1 show that compression ratio obviously affect the maximum compressive stress at contact surface.
It is concluded that the main factors influence on rubber sealing material resilience characteristic are diameter, compression ratio: (1)When the diameter are equal, with the compression increase, the maximum crushing stress and speed of resilience increase, but the time for get maximum resilience speed grow more

Numerous factors with complex mechanisms affect the formation of cracks.
Moreover, sluice also possesses the mechanical characteristics of high elastic modulus and high authigenic volume deformation, thus resulting in difficulties in controlling temperature and anti-cracking measures [6,7].
Crack Mechanism and Anti-cracking Measures of Concrete Structures Crack Mechanism and Anti-cracking Method Thermal characteristics and thermal inertia properties of concrete materials are closely associated with the rapid increase in temperature after pouring.

These ground movements may produce damage to buildings, roads, railway lines, or any other infrastructure in the surrounding areas affected by the subsidence.
Knothe time function A number of workers have considered the significance of time functions and the Knothe time function one of the most widely used time functions, proposed by Knothe [8], takes the following form (1) where t is the time, is the subsidence at a moment t; is the final subsidence at a given point and c is the factor of proportionality which is related to the physical and mechanical properties of the overburdened rock mass.
Considering wm as a constant and the initial Condition for w(t=0) as zero, we have (2) For purposes of further analysis, Eq. (2) will be described as a function of the independent variable t, thus we have (3) According to Knothe, the factor of proportionality, c; is a parameter describing the influence of geological and mining conditions on the deformation process in time.

This may lead to serious damage of fan or compressor blades and, additionally, affect the stability of engine operation.
The purpose of the analyses performed was to define how variations of the engine speed, the angle and direction of wind gusts affect formation of the intake vortex.
The scope of presumptions that lead to failures of engines is very wide, where the most important factors include design and manufacturing errors, mechanical deficiencies, operation incidents and climatic impacts.
When the engine is running on the airfield such a field exhibits one peculiar property, namely it may generate a stagnation line (a negative pressure path that leads from the earth surface, where so called stagnation point is located, to the engine intake) which is associated with formation of a preintake vortex.
Ma=0.0025÷0.015) as well as alteration of the incidence angle of incoming gusts (α=0÷20o and b=0÷180o) with respect to the object under tests may affect the possibility of the intake vortex appearance.

The most successful dyes are based on ruthenium bipyridyl compounds, which are characterized by a large absorption coefficient in the visible part of the solar spectrum, good adsorption properties, excellent stability, and efficient electron injection.
Overall the cell performance is subjected to a number of factors but fundamental considerations relating to the dye are how efficiently the molecules absorb incident photons and are converted to electron–hole pairs.
It is related to the optical properties of the dye, as well as to different dynamic processes in the cell.
Table 2 clearly explains how the surface treatment affects the performance of the DSSC.
Natural dyes have shown moderate energy conversion efficiencies in DSSCs In order to enhance cell performance; we propose to use molecular engineering to improve the energetic and kinetic properties of the dyes.