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Near the big ends and tooth roots is mainly the area which affects demolding after modification.
Meanwhile, the pick and determination of modification area and size should not affect the smooth demolding of the fine-forged gears.
The analysis is based upon the sizes of the electrode gears, while some factors are neglected such as forging mold,elastic deflection of the forged parts and thermal deflection, etc..
displacement factor.
Near the big ends and tooth roots is mainly the area which affects demolding after modification.

Second, in the theoretical study on the factors affecting concrete expansion pile under the action of horizontal force, scholars have more studied disk position and have less research on disk spacing factor.
The relevant physical and mechanical properties are shown in Table 1.
Table 1 Physical and mechanical properties of different materials Parameter Material Modulus of elasticity [MPa] Poisson's ratio [υ] Density [kg/mm³] Cohesion [kPa] Friction angle Φ [°] Expansion angle Β [°] Pile-soil friction coefficient Concrete 3.1E+04 0.30 2.6E-6 -- -- -- -- Clay 26 0.165 2.1E-6 17.5 18.27 18.27 0.41 2.4 Model parameters According to the specifications and the requirements for pile size in actual projects, the size of the model pile should be designed in a 1:1 ratio[8].
References [1] Yongmei Qian,Rongzheng Zhai,Ruozhu Wang,Analysis of Soil Characteristics Affecting Failure Behavior and Bearing Capacity of the Concrete Expanded-Plates Pile,The Open Construction and Building Technology Journal, Vols.9, 2015.9:188-191
The Research on the Affect of Collapse State and Bearing Capacity of the Soil Layer Properties Adjacent to the Bearing Plate of the Multi-Extruded-Expanded-Plates Pile[J].

Zhao 3,c 1 School of Mechanical and Electrical Engineering, Hohai University, Changzhou 213022, PR China 2 School of Mechanical Engineering, Henan Polytechnic University, Jiaozuo 454000, PR China 3 School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200030, PR China a liq@hhuc.edu.cn, bzhaob@hpu.edu.cn, czhanjc@sjtu.edu.cn Keywords: Hydraulic engine mount (HEM), Structure parameter, Vibration isolation characteristic, Lumped parameter (LP) model, Frequency response characteristic Abstract.
Hydraulic engine mounts (HEMs) are important vibration isolation parts in vehicle powertrain mounting systems, and the structural parameters of HEMs are the main factors which determine their vibration isolation characteristics.
However the results in most studies on the dynamic properties of HEMs are not comparable because of their difference in their configurations.
It is necessary to do quantitative comparison based on the same structure, e.g., the same main rubber, the same upper and lower chamber and the same fluid, and elucidate the rule how the structural parameters of HEMs affect the vibration isolation of HEMs, and then provide a guiding principle for the HEM's selection and design.
Luo: China Mechanical.

Farzalipour Tabriz3,d 1 Department of Material Science and Engineering, Faculty of Mechanical Engineering, K.
ZnO nanoparticles because of their interesting properties and various morphologies, has become one of the most attractive nanomaterials for research objectives.
Its significant properties has made it applicable in UV-Light emitters, varistors, transparent high power electronics, gas sensors, etc., [1].
Introduction ZnO, because of its interesting properties and various morphologies, has become one of the most attractive nanomaterials for research objectives.
Its significant properties has made it applicable in UV-light emitters, varistors, transparent high power electronics, surface acoustic wave devices, piezo-electric transducers, gas sensors, etc. [1].

Simulation and Optimization of the Camshaft Production Line Based on Petri Net Hongjun WANGa, Ting DONGb, Jing ZHANGc, Haiyan WANGd School of Mechanical and electrical Engineering, Beijing Information Science & Technology University, Beijing, China a wanghj86@163.com, bdjdongting@163.com, cfresh35@163.com, d asmylady@163.com Keywords: Camshaft production line; Simulation optimization; Petri net; eM-Plant.
The production line productivity and characteristic are affected by many practical factors of the workshop.
According to the properties of hierarchical modeling of eM-Plant, the simulation modal was established by using hierarchical modeling and setup methods of different objects.

There are many factors that could affect the uniformity of the outlet velocity, especially in the extrusion of asymmetric cross section.
(a) Upper die (b) Lower die Fig. 3 Geometric model of the initially designed porthole die Material Properties.
Table 2 Factors and its levels Level No.
It is indicated that bearing shape has more significant effect on the SDV than other factors.
The effect of bearing on the uniformity is much higher than other factors

It directly affects temperature-rise of the concrete and the variation in temperature stresses of mass concrete, to a certain degree, control occurring of the mass concrete cracks.
Introduction Cement hydration heat is the heat released by chemical reaction which happened when the cement is hydrating, and is a very important influence factor on thermal stress in the mass concrete construction.
Mechanics computation model of temperature field To find the effective method to control the temperature stress, several factors which influence the temperature field and stress field of mass concrete were analyzed by using the large finite analyzing software ANSYS.
Namely, don't consider properties of these materials change with time. 5) Select the appropriate unit on the basis of different elements type provided by ANSYS.
So we use unit SOLID70 in thermoanalysis firstly, and then use unit SOLID45 in structural analysis. 6)In the simulation process, involves the temperature field and stress field, i.e. thermal problems and mechanical problem.

At temperature above 873K the oxidation behavior was affected by the ratio N/C where the oxidation resistance of the alloy increased by increasing N/C ratio.
Authors [10 - 20] found that the presence of nitrogen in austenitic stainless steels improve oxidation resistance, corrosion behavior and mechanical properties The aim of this study is the investigation of the oxidation behavior of developed automotive steel grade DIN X45CrNiW18-9 – used in exhaust valve through partial or total replacement of Ni by Nitrogen and clarifying kinetics of the formation of the oxide film at different temperatures.
By increasing the temperature, the points in the early hours of oxidation are more likely to form straight lines with higher regression factor.
Berns: “High nitrogen steels” structure, properties, manufacture, applications” Springer- Verlag Berlin Heidelberg, Germany, 1999
Jargelius — Pettersson “Factors affecting the oxidation mode of stainless steels’ Materials at High Temperatures, 17, No.2, pp.287-292, 2000

All this leads to appearance of defects (pores, cracks), which significantly impair the mechanical properties, and, consequently, reduces the reliability and durability.
Graphical dependences of the characteristics of the obtained joints on the most influential factors (parameters of technological modes) were obtained.
Gotovschik, Investigating the influence of the power supply type upon the properties of the weld joints under manual arc welding, Adv.
Kocurek, Effect of autogenous laser weld on microstructure and mechanical properties of Inconel 617 nickel alloy, Solid State Phenom. 226 (2015) 43-46
Rethmeier, Influence of heat input and preheating on the cooling rate, microstructure and mechanical properties at the hybrid laser-arc welding of API 5L X80 steel, Procedia CIRP 74 (2018) 748-751. https://doi.org/10.1016/j.procir.2018.08.018 [49] K.T.

At the same time, the proportion of metal foam is only 0.1 ~ 0.6 times for the same volume of metal, the unit volume weight was only about 1/10 of the solid metal material, but also it has good shock absorption, noise elimination performance, and strong mechanical properties.
At the same time, the heat transfer coefficient of the metal foam heat sink is affected by its geometric size.
Fig.1 The comparison coefficient of heat transfer 4.2 The pressure drop In practical applications, the pressure and the fan power are usually the key factors in the cooling of electronics.
It shows that the yield factor of the heat sink decreases with the increase of the fan power.
Thermophysical Properties og high porosity metal foams[J].