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Based on the simulation and vibration experiment, the mechanics dynamical properties are proved, the main destroy form and locations are analyzed and indexed.
Thus affects seriously the work stability, even causes the electrical machinery damage.
Through selecting these essential spare part mechanical property, gaining a more rational structure can avoid synonym.
by electric machine design[5], In long electrical machinery, dangerous section possibly is in middle part of core applied by torque and bending moment, according to the third strength theory or maximum tangential normal stress theory, design stress of revolution axis on steel can not surpass 245 Mpa,but the yield limit of the steel is 353Mpa.so Its safety factor n=353/245=1.44,is amongst the prescriptive safety factor 1.3~1.5.
Contrastive analyses to rotor with a series of length of a vertical motor are carried out, simulation parameters are gained, the result of the simulation showed that the influences of these parameters on strength would work on the dynamical properties of the rotor.

The relative influence of each compatibilizer was observed from structural analysis by WAXD, and mechanical properties.
Recent studies have focused on the uniform dispersion of modified clay particles in the nonpolar matrix to increase their physical and mechanical properties.
In thermoplastic-based nanocomposites, the mechanical properties of the material may vary strongly, depending on the nature of the interactions between the matrix and filler.
The films were used to measure oxygen barrier properties.
However the percent of change for these samples was also around 40% indicating that the clay was not significantly affecting the degradation of LLDPE.

Analysis On Wet Multi-Disc Brake Based on ABAQUS JIANG Jun-sheng College of Mechanical and Electrical Engineering, Weifang University, Shandong, China Jiangjunsheng321@126.com Keywords: Wet Multi-Disc Brake, Complex Modal Analysis Theory, Noise Analysis, ABAQUS Abstract.
Through complex modal analyzing on the wet multi-disc brake, obtain the main factors of brake noise during braking and provide improved measures to decrease the brake noise combined with analysis results.
Through complex modal analyzing on the wet multi-disc brake, obtain the main factors of brake noise during braking and provide improved measures to decrease the brake noise combined with analysis results.
According to the thermal physical parameters of material in Table 1, define the performance parameters of the materials in the Property module of ABAQUS, and endue them with the dual disc and friction sheave.
Uneven pressure distribution leads to uneven friction temperature distribution, and the local features of friction temperature distribution in turn affect the interface stress distribution.This is the main reason why the brake has uneven wear and braking vibration and noise.

Introduction Wood is a natural polymer composite with superior mechanical properties.
Wood flow forming have been developed as a plastic forming technique for solid woods aiming at improving both the mechanical properties and a press-formability such as near-net shape forming.
Physical and mechanical properties of this wood-PF composite were equivalent to the PF resin namely about 100 MPa of the bending strength and less than 1 % in a size-stability against 1 hour-boiling water [5].
According to studies related to wood under non-equilibrium state, the mechanical and visco-elastic properties of wood are drastically altered during environmental changes such as temperature and humidity.
The specimens were cut by a numerically-controlled milling machine from a tangential section board with a continuity in the longitudinal direction to minimize a variety in mechanical properties.

The mechanical behavior and failure mechanism of all specimens were studied, failure modes were revealed, and important experiment data were also obtained, such as cracking loading, ultimate loading, crack development shape, crack width and so on.
Research results showed that failure modes of specimens were similar to “less-reinforced beams”, based on limit state design method in normal use, security surplus factor is 1.27 before collapse damage.
Exposed in the open air environment, the surface layer of pole sometimes peels off, and the life and mechanical properties of the poles are reduced greatly by aging disease phenomena, thus affecting the safety operation of power systems[5~8].
Taking into account the importance of development of the cement pole industry to our industry construction, mechanical properties of reinforced concrete pole in the service period in an operating transmission line was studied in this paper.

The modal analysis shows the bending and torsion deformations are the main factors influencing the dynamic performances of the beam when working frequencies are close to the first six natural frequencies; therefore, the selected spindle rotational speed should keep away from the natural frequencies of the beam when planning the cutting parameters.
Finite element model The three-dimensional (3-D) solid model of the beam was established by Solidworks software, whose overall size was 3905mm×1110mm×1000mm.Taken into account the efficiency of the subsequent analysis, some of small properties were simplified.
The material of the beam was HT300 and its physical properties were given in Table 1.
Table 1 Physical properties of beam Young modulus [GPa] Poisson ratio Density [kg/m3] 130 0.27 7200 The FE model in coordinate system is shown in Fig. 1.
(2) The modal analysis shows the bending and torsion deformations are the main factors influencing the dynamic performances of the beam when working frequencies are close to the first six natural frequencies; therefore, the selected spindle rotational speed should keep away from the natural frequencies of the beam when planning the cutting parameters.

This can lead to detrimental chemistry variations, which can have negative impacts on physical and mechanical properties.
While these changes often yield a material that falls within the AMS 4911 specification, the impact on mechanical properties can be intolerable.
Thus, in order to ensure part-to-part repeatability with known mechanical properties, it is important to develop processing parameters that yield consistent chemistry and therefore consistent properties.
Either scenario can be detrimental to chemistry and mechanical properties.
• Melt pool size, temperature profile, and geometry are likely the key factors in determining aluminium loss during electron beam deposition processing.

The main process parameters affecting injection molding of microcellular foamed plastics The major factors affecting the quality and production of microcellular foamed plastics are three aspects of raw materials, molding process and molding equipment.
After the raw material and forming equipment are determined, the deciding factor is the molding process parameters.
At the same time, it directly affects the amount of gas dissolved in the melts.
And the structure of the nozzle, runner and cavity and geometric parameters are all the important factors influencing the flow resistance.
The main characteristics of microcellular foam injection molding products can reduce weight on the basis of keeping the original mechanical properties of products.

The results of numerical simulation show that the shape of drawing tools and process conditions have a significant influence on the forming process and final shape and properties of the workpiece.
The reliable results of the forming process affect these factors [2]: - dimension and material formability of input feedstock, - technological parameter of forming (drawing velocity, method of lubrication and type of lubricant) - the geometry of the forming tools (rifled mandrel) There are several approaches on how to predict factors that influence of the forming process.
Using FEM analyses to determine the initial tube size that gives the appropriate mechanical properties after drawing can be found in some works [7].
Low carbon steel, is now the most common form of steel of tubes because its price is relatively low while it provides material properties that are acceptable for the cold drawing process.
As the temperature stays lower in cold drawing, the forming material properties do not vary and can, therefore, be supposed to be independent of the temperature variation.

Spray parameters used in detonation gun spraying and mechanical properties of the fabricated micron/nano structured coatings.
Mechanical properties of as-sprayed coatings Fuel gas amounts and distance between substrate and end of nozzle as spraying parameters in detonation gun were controlled.
From results of hardness and abrasive wear tests, it is concluded that density of coatings is a main factor to determine the properties in nano WC-Co coatings.
Variation of mechanical properties such as hardness, fracture toughness and wear resistance were shown in Fig. 3.
Fracture toughness is a one of main factor to affect wear resistance of materials.