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The establishment of mesh model The Selection of the Constitutive Model Constitutive model is the empirical description of mechanical properties of siol material, Which reflects soil’s stress-strain relationship under load conditions, accordingly, constitutive model selection is one of the key steps of numerical simulation.
In fact, any kind of model may not consider all factors, at the same time, it is impossible that one model be appropriate for all types of soil and the loading, only when the choice of constitutive model comply with the mechanical properties of engineering materials, this choice is reasonable.
Table1 Physical and mechanical parameters of each layer of soil soil name ρ/kg·m-3 c/kPa φ/() E/MPa backfilling 1500 10 15 8 0.33 clay 1800 20 20 4 0.33 In FLAC3D program, deformation parameters adopt the shear modulusand bulk modulus, in specific calculation, the following formula will be used to change deformation modulus into shear modulus and bulk modulus: (2) (3) The Initial Stress Calculation Subgrade grid assign empty model before the road embankment construction.
For this reason, unit weight of filling significantly affect the subgrade settlement, lightweight of filling should be selected as much as possible under the condition that meets the specification requirement needs.
Comparative Analysis in Different Roadbed Elastic Modulus Because of the difference in the physical mechanical parameters of the embankment soil filling, and the difference in the subgrade construction methods, elastic modulus would be different in different sections of embankment. the paper analyzes the influence of the original embankment settlement in case of the different embankment elastic modulus.

The use of these metals has begun to lessen and is replaced by non-metallic materials such as composites that have good mechanical properties, more corrosion-resistant and have lower mass.
Natural fiber-reinforced composites increase their mechanical properties linearly with the increase of weight percent of the fiber, mechanical characteristics also gain improvements such as tensile strength, flexure strength, and impact strength [4].
Structures, Processing, Properties and Selection 5th Engineering Materials.
Effect of Wood Fiber Characteristics on Mechanical Properties of Wood-Polypropylene Composite, Wood and Fiber Science. 35(2)
Properties of Hybrid Composites Using Coral Reefs Waste and Coconut Fiber.

Moreover, investigations into material properties, microscopic morphology, and their collective impact on sealing performance remain limited.
(3) The physical properties of both solids and fluids remain constant under operational conditions, ignoring the effects of temperature, pressure, and other external factors
The simulation employed two typical sealing media - water and nitrogen, whose fluid properties are presented in Table 2.
This is primarily due to the differences in the physical properties of the two sealing media.
Effect of surface topography on contact property of the end face for mechanical seal, Applied Mechanics and Materials. 419(2013) 292-298

In these components, as higher the material density better are the magnetic properties that are important to their proper functioning.
The densification will depend on many factors of the processing parameters and powder characteristics (morphology, average size, surface area, and chemical composition).
With the samples were analysed: - Density, as it could change the magnetic properties; - Quantity of carbon to verify if the debinder was carried through successfully as the presence of the carbon could affect the magnetic properties; - Hardness as the alloy to the specific function needs to have a minimal hardness of 84HRb.
[4] SORESCUA, M.; GRABIASA, A., Structural and Magnetic Properties of Fe50Co50 System, Institute of Electronics Materials Technology, Poland, 2001. [5] SOURMAIL, T., Near equiatomic FeCo alloys: constitution, mechanical and magnetic properties, Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, 2003
[6] SUNDAR, R.S.; DEEVI, S.C.; Influence of alloying elements on the mechanical properties of FeCo-V alloys, Chrysalis Technologies Incorporated, Richmond, VA, USA [7] TORRES.

This issue requires more economical production and improved protective properties of titanium-based materials.
However, armor should not exhibit a combination of these properties over the entire portion of the structure.
As a result, the hydrogen content of the final products becomes negligible at a level that does not affect the mechanical properties.
This includes homogeneous distribution of strengthening particles, controlled residual porosity, and good integration between the layers; and such combination can deliver a sufficient mechanical properties of entire part.
Last two factors obviously resulted in composite layers with exceptionally high hardness, which are crucial for the durability and performance of the laminate structures including their anti-ballistic protective characteristics (Fig. 7).

Carbon nanotubes (CNTs) had high electrical conductivity, high aspect ratio, low density and super mechanical strength, and was compatible with polymer matrices.
Comparing curve b and c, we found that FT-IR of the composites was almost same as that of LDPE, which indicated that s-MWNTs didn't affected the chemical structure of LDPE.
Electrical property DC volume resistivities(ρDC) of three sets composites at room temperature were shown in Fig.6.
Log-log plots ofσto (p-pc) Table 1 Percolation thresholds, critical exponents and correlation factors for the three sets of MWNTs/LDPE composites composites Percolation thresholds[%], pc Critical exponent (t) Correlation factor (R) p-MWNTs/LDPE 0.20 4.58 0.999 a-MWNTs/LDPE 0.20 4.17 0.999 s-MWNTs/LDPE 0.10 1.65 0.990 4.
Conclusion We fabricated three sets of composites by melt processing technique and investigated their structures and electrical property.

Lasers have been shown to be an effective tool for machining many materials that are difficult-to-machine using mechanical processes.
The physical properties and chemical compositions of the PCD material were given in Table 1.
Table 1 Physical properties and chemical compositions of PCD used in the study Physical Properties Value Chemical composition Percentage Density [g/cm3] 3.8-4.1 Diamond 92 Thermal conductivity at 20oC [W/mK] 560 Titanium 3-8 Thermal expansion [10-6/oC] 1.5-3.8 Tungsten-cobalt alloy 3-8 Knoop hardness [Kg/mm2] 5000-8000 Nickel 2 Graphitization temperature [K] ~700 Experimental Design.
Surface roughness is a major factor in accessing surface quality in milling process.
It can be noticed from Fig. 3(f) that the number of passes affects the surface roughness in a complex way.

Among many of factors involved, the main certain factor is the most allowable interference and the minimum compute interference, the former is decided by promising strength condition of fit part material ,the later is decided by promising strength condition of linking, that is decided by delivering a burden condition.
Then each factor’s influence is considered, through necessity revise then the most interference and minimum compute interference is get.
The finite element analysis model for interference fit combination mold extrusion is established, and the cell types and material properties are determined, the combination mold interference fit problem is designed, analyzed and calculated by using ANSYS finite element software [5].
So it will not produce plastic deformation and not affect the product performance.
[3] Xing Jingzhong, Wang Ronggang, Chen Xiaoxia, et al: ANSYS7.0 Of Examples and Practical Application (Mechanical Industry Press, Beijing 2004) [4] Gong Shuguang: Application ANSYS Engineering Analysis (Mechanical Industry Press, Beijing 2003)

Introduction Ultrafine particle usually refers to powder aggregates whose size are less than a few microns, which has a specific nature in the aspect of melting point, specific heat, magnetic, electrical properties, and mechanical properties[1-2].
Influence Factors and Nozzle Effect of the Process Parameters.
In addition, the change of temperature may also affect the drying time of the deposition of particles.
Nozzle structure largely affects particle morphology and size.
Length-to-diameter ratio (L / D) of nozzle was also an important factor, this ratio can make the product chang from the particle to the fiber.

The electrical properties of the probe under different loading frequencies Qing Yuan , Lei Han*, and Chunliang Liu State Key Laboratory of High Performance Complex Manufacturing and School of Mechanical and Electronical Engineering, Central South University, Changsha, 410083, China *Corresponding author.
Tel.: +8673 18975100970; E-mail address: yuanqingcsu@163.com Keywords: Probe; Frequency; Phase; Oscilloscope Abstract: A testing circuit of probe is designed to research the electrical properties of the probe under different loading frequencies.
Probe electrical properties will change due to continuous compression and extension of the probe in the test.
We believe that electrical properties of the probe will vary with loading frequency.
Based on experimental data, we can conclude probe electrical properties varies with loading frequency in probe testing.