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Throughout a specific analysis a constant friction factor was considered on the die-workpiece contacting surface and the initial diameter of the billet was equal to that of the root circle of the gear.
Experimental 3.1Material properties Compression tests were performed on commercial lead billets using workpieces of 20 mm in diameters and 30 mm in height (h/d=1.5) to obtain true stress-strain data.
For instance, in the numerical simulation the friction factor is considered to be constant during the process while in the real condition the friction factor varies during the forming and it will affect the differences between two results.
This result shows that the teeth and specially the root area are the most affected area of the forged gears. 4.
[3] N.R.Chitkara, M.A.Butta, “Forging and heading of hollow spur gear forms: an analysis and some experiments”, International Journal of Mechanical sciences 41, 1999, pp. 1159-1189

This mis-match in mechanical properties and influence on stress re-distribution leads to extremely complication in understanding the mechanisms of failure of a weldment.
These four zones have significantly different creep properties.
Zhao [22] compiling the UMAT for ABAQUS to research factors affecting creep damage accumulation in ASME P92 steel welded joint is a typically try in coding user’s subroutine aspect.
The user can define he own properties and interfaces to FEA- and CFD-programs.
The American Society of Mechanical Engineers Standard Committee, USA.

Discovery of extraordinary properties in BNM provoked interest in searching the ways for their effective application.
The Nanostuctured Ti (nanoTi) is a new-class material with enhanced mechanical and unique bio properties.
Moreover, nanoTi due to its novel mechanical and biological properties opens wide possibilities for developments in surgery and orthopedics.
Economic factors.
One of the important success factors is establishing of a spin-off company responsible for elaboration and realization of a strategy for promotion of BNM to the consumer’s market, settlement of copyright transfers for the intellectual property.

The uses of polymer materials in new categories of products are only limited by the product properties.
This is a unique way to combine properties from both, inorganic and organic materials in one polymeric network.
UV-absorbing properties.
However, such small molecules have a tendency to migrate out of epoxy networks over time causing a reduction in mechanical properties.
By binding the functional groups on to a nanoparticle which is itself bound into the epoxy resin network, the problem of leaching can be avoided and mechanical properties should maintained.

Influence of Pressure Amplitude on Formability in Pulsating Hydro-bugling of AZ31B Magnesium Alloy Sheet Yang lianfa 1,a, Yi liang 1,b and Guo chen 2,c 1 School of Mechanical & Electrical Engineering, Guilin University of Electronic Technology, Guilin, 541004, China 2School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China ay-lianfa@163.com, byiliang7141585@163.com, cgch@mail.xjtu.edu.cn Keywords: Pressure amplitude, Uniform expansion, Plastic behavior.
Introduction Magnesium alloy sheets have attracted a lot of attention for structural applications essentially due to their lightweight, high strength-to-weight ratio and good electromagnetic shielding property [1, 3].
As mentioned above, the pulsating hydro-forming technology has displayed remarkable effect on improving the formability of a tube in hydro-forming and great potential application, however, the factors that improve the formability in the pulsating hydroforming are still unclear although several factors are considered, because fundamental studies on the pulsating hydroforming are scarce.
The purpose of this paper is to investigate by finite element analysis how the pulsating pressure affects the formability of AZ31B magnesium alloy sheets. 1 FE Simulations of Pulsating Hydro-bugling of AZ31B Sheet The AZ31B magnesium alloy sheet with a diameter of 40 mm and 0.6 mm in thickness was employed in the present finite element simulation.
The mechanical properties used in the simulation are shown in Table 1.

Microgrinding with Diamond Electroplated Tools and with Single-Disk Lapping Kinematics Adam Barylski a, Mariusz Deja b * Gdansk University of Technology, Mechanical Engineering Faculty Department of Manufacturing Engineering and Automation 11/12 Narutowicza Str., 80-233 Gdansk, Poland aabarylsk@pg.gda.pl, bmdeja@pg.gda.plmail, * corresponding author Keywords: abrasive machining, lapping kinematics, finishing processes.
Achieved results confirm the low abrasive properties of the worn tool.
References [1] Barylski A., Deja M., Heinrich M., Hoghe T., Ikken B., Uhlmann E.: Grinding of cemented carbides with planetary kinematics, Developments in Mechanical Engineering, 2009, Vol. 3, pp. 65-71
[5] Sanchez L.E.A., Jun N.Z.X., Fiocchi A.A.: Surface finishing of flat pieces when submitted to lapping kinematics on abrasive disc dressed under several overlap factors, Prec.
[8] Upadhyaya R.P., Fiecoat J.H.: Factors Affecting Grinding Performance with Electroplated CBN Wheels, CIRP Annals - Manufacturing Technology, 2007, Volume 56, Issue 1, pp. 339-342

The studies of Ahari show that, during severe earthquakes, the most important parameter affecting the uplift response of unanchored tanks is the behavior of their bottom plates.
Tank wall and tank bottom chose Q345 steel, and the unit is Shell181, elastic modulus is 203GPa (average measured value of experimental mechanical properties), the density is 7850kg/m3.It is set as linear boundary conditions at the bottom of the tank.
The main reasons causing these differences are as follows: a) As a thin-walled container of fluid-structure interaction, strictly speaking, its frequency is not a simple linear model frequency, but a nonlinear modal frequency caused by the factors such as boundary nonlinear and the real-time changing stress state.
b) A variety of factors are considered together in earthquake simulation experiment, which simulate the dynamic response of real tank under seismic excitation.
Process Mechanical Engineering, Vol. 223(4), (2009), p. 225-231

One path to improve piezoelectric properties is through alloying these materials.
Elastic Stiffness Constants: The anisotropic mechanical properties of materials are described using elastic constants to relating stress and strain relationship.
The c/a ratio may be the dominant factor in determining the total polarization.
They have much better piezoelectric properties than compared to their pure ABO3.
Nye, “Physical properties of crystals” Clarendon press, (1985)

Pinning effects on the dielectric and ferroelectric properties of Mn-doped Ba(Zr0.06Ti0.94)O3 ceramics S.J.
The effect of MnO2 doping on the dielectric and ferroelectric properties was also investigated.
Ionic doping is a common method for optimizing the electrical properties without serious affecting other properties.
Mn as a doping element in common use, it can be used as the sintering-aid to improve the sintering properties, and enhance the quality factor Qm.
The dielectric and ferroelectric properties were studied.

But the traffic is constant changing, the cars are more and more, overrun, speeding and highly channelizing, together with the difference of the highway original condition of the nation, the difference strength of the roadbed, pavement damage in the earlier period is not controlled effectively under the mutual effects of the various influence factors [3-6].
Fig1 Grading curve 2.2.4 The optimum dosage of the fiber and the asphalt According to the mechanical properties of fiber itself, combined with the properties of slurry mixtures which is adding fiber , use the wet abrasion test and load wheels test to analysis and determined the optimum dosage of fiber and asphalt, as shown in Figure 2.
The result is shown in Figure 5, strength and property of resistance mechanical shock of the slurry mixture which is adding fiber is increased by 30 percent.
(2)The shear strength of the slurry mixture which is adding fiber is 35% higher than ordinary slurry mixture by shear test and mechanical property is better than ordinary slurry mixture; the anti-fatigue performance of the slurry mixture which is adding fiber is 15% higher than ordinary slurry mixture by anti-endurance test, the usability of the fiber slurry road is a great improvement; Water-resisting property is increased by 33% than the slurry mixture which is not adding fiber by WTAT; strength and property of resistance mechanical shock of the slurry mixture which is adding fiber is increased by 30 percent by Ken Tower Fort flying test
Journal of Tongji University(Natural Science),,2007(09):190-194 [9] Wu Shaopeng, Ye Qunshan.Effects of Fibers on the Dynamic Properties of Asphalt Mixtures[J].Journal of Wuhan University of Technology,2011,39(04):540-545 [10] Lu Jun-fu, Liu Li, Wang Ming-nian, Li Pei-nan.