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Because each particle had such attributes as the shape, the size, the color, the transparency, the movement speed, the movement direction and the life-cycle properties, these particles were constantly in motion as time goes by and its properties were also constantly changing, with the new particles generating continually and the old particles dying constantly.
Each droplet had such attributes as the velocity, the acceleration, the position and other various physical properties, so the dynamic effects of spraying could be simulated by the particle system for calculating theses properties of oil droplet particles.
Especially the transient area could be ignored in the dynamic simulation in general, but it did not affect the eventual effect of charged oil atomization.
Since it is a simplified mathematical model, such factors as the oil temperature, the oil flow rate, the jet velocity, the droplets interactions among particles and the non uniform electric field distribution are not considered.
Wen: Chinese Journal of Mechanical Engineering, Vol. 38(2002), p. 37-40

Attention is given to the mechanical properties of concrete block masonry, with respect to its compressive and tensile strength.
Properties of Materials.
Mechanical properties for compressive loading normal to bed joints.
Mechanical properties for compressive loading parallel to bed joints.
Mechanical properties obtained in diagonal tests.

Since the width of the bridge deck has little effect of the mechanical properties and stiffness of it, so the recommended values of the bridge decks width should be determined combined with the diaphragm and the integral stiffness of T beam bridge.
Shown from Fig. 5, the impact of the maximum transverse tensile stress by bridge deck was larger, but when the thickness of bridge deck reached 22cm, it has not significantly affected of the the maximum transverse tensile stress by increase of the thickness of bridge decks.
Since the width of the bridge deck has little effect of the mechanical properties and stiffness of it, so the recommended values of the bridge decks width should be determined combined with the diaphragm and the integral stiffness of T beam bridge.
Transverse Cracking of Concrete Bridge Decks: Effects of Design Factors[J].

Hot working properties are mainly affected by the following factors: microstructure, temperature, strain rate, and specially flow stress in the deformation zone.
In addition, it has a direct impact on the thermal processing properties of the material.
The effects of Er and Sc on the microstructure and mechanical properties of Al-3.4Cu-0.8Li-0.6Zn aluminum alloy were studied by Li and Jiang et al. [7].
Studies have shown that the main influencing factors of high temperature tensile flow stress of metal materials are strain rate, deformation temperature and strain [14].
Hartley, Effect of stretching prior to aging on mechanical properties in Al-Cu-Li (2195) alloy, Light Weight Alloys Aerosp.

Generally, these models cannot evaluate the effect of the microscopic material size on the macroscopic mechanical property because they relate stress and strain between micro- and macroscopic scales.
However, the size of the pore may be one of important factors on the mechanical property of the material.
The relation was clearly affected by both of macroscopic and microscopic structure sizes.
The effect of the sizes of macroscopic and microscopic structures on the mechanical behavior of LDPE foam was investigated by computational simulation of bending of cantilever.

Considering the greater character differences between matrix and soil, and the great disparity in physicochemical properties of various substrate, now there is no special equipment to test matrix moisture, electrical conductivity (EC) and salinity of medium.
On the basis of analyzing physicochemical properties of various substrate, the relationship between output voltage and water content is studied through piezoelectric type soil moisture probe trial.
The substrate and soil are very different in physicochemical properties, and various substrate are quite differnt in physicochemical properties, therefore, the study on the matrix water content, electrical conductivity and the salinity in-situ detection and the related equipments are rare.
TDR can be used to measure the dielectric properties of material to calculate the soil volumetric water content according to the principle that the velocity of electromagnetic wave varies with the dielectric constant [3].
Furthermore, with the change of water content, the smaller the salt content, the greater the rate of electrical conductivity variation [5].With the determination of soil solution electrical conductivity and the analysis of the relevant factors, Lin Chengyi has pointed out that the electrical conductivity of soil solution is mainly affected by total salt content in soil and soil moisture.

Nickel-based alloy has been widely used in the aerospace industry due to its excellent mechanical properties.
Introduction Nickel based superalloy has been widely applied in the jet and rocket engines parts due to its excellent properties, such as high mechanical strength at elevated temperature, extraordinary oxidation resistance, and high creep rapture strength.
The related FEM simulations show the material removal at certain location on the insert did not lead to the significant stress concentration and obvious property weaken [8].
It was found that the holed-inserts contributed both positive and negative affects to the tool life extension under JC method at Vc = 100m/min, ap = 0.3mm and f = 0.1mm/rev.
However, it should be noted that the effect of coolant disturbance caused by the contraction is not a decisively negative factor, but rather necessary to be evaluated with other factors such as substrate material and cutting parameters.

Depending on these factors the flow of the mixture may be either laminar or turbulent.
Physical properties of an aerated liquid are considerably different from those of the initial state of the liquid.
Theoretical Analysis Aeration of a multi-component liquid changes its physical properties.
Yet, the importance of the results obtained depends on the nonstationary properties of the shaping elements of the system.
Hence, application of air currents and their governing laws in the development of devices that reduce splashing of a lubricating liquid, as well as the natural change in the physical properties or aggregate state of the lubricating liquid, are very important for mechanical systems.

Gurulev, Effect of plastic deformation on the structure and properties of laminated composite materials, Welding International. 16 (2002) 890-893
Gulenc, Investigation of interface properties and weldability of aluminum and copper plates by explosive welding method, Materials and Design. 29 (2008) 275-278
Kharlamov, Effect of heat treatment on the structure and properties of steel-aluminum composite with diffusion barrier, The Physics of Metals and Metallography. 116 (2015) 1096-1102
Nobili, Aluminum-steel electric transition joints, effects of temperature and time upon mechanical properties, Light Metals (The Minerals, Metals, & Materials Society). (2002) 439-445
Arisova, Structure and properties of explosion welded composites from steels of different kinds, Metal Science and Heat Treatment. 46 (2004) 167-169

Parts of the material physical properties of Si3N4 ceramics [9] are shown in Table 1.
Chinese Journal of Mechanical Engineering, 2000, 36(11): 75-79
Chinese Journal of Mechanical Engineering, 2002, 38(6): 61-66
Chinese Journal of Mechanical Engineering, 2008, 44(8): 132-136
Chinese Press of Mechanical Industry, 2008, 1: 22-24