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FEM Analysis on the Performances of HSK-E50 Toolholder-Spindle Interface Yong Lu a, Chongqiang Huang b, Tianyang Wang c School of Mechanical and Electrical Engineering, Harbin Institute of Technology, Heilongjiang, Harbin, 150001, China a luyong@hit.edu.cn, bhuangcongqiang85@163.com, charbeer1986@hotmail.com Keywords: Toolholder-Spindle Interface, Finite Element Method (FEM), Interference, Clamping Force Abstract.
Then calculated the stress distribution of toolholder-spindle interface respectively effects by the spindle speed, interference and pull in force and finally find out how this three factors influence the connection characteristics of HSK-E50.
In addition, all bodies are considered to be elastically deformed, with the following physical properties: Young's modulus E = 206 GPa, Poisson's ratio v = 0.3, density ρ = 7.86 × 103 kg/m3, the coefficient of friction f = 0.2.
To find how it affect the connection characteristics of toolholder-spindle interface, the FEM model is simulated with pull in force on 11KN and 20KN in the case of interference value set as 6um.

Properties of surface and subsurface layers are characterized by changes in the structure; change the modulus of elasticity, which is mainly influenced by residual stresses in the surface and subsurface layers of the workpiece.
Their structure, crystal arrangement, the amount, type of shape or direction affect their properties and it has technological and commercial importance [2,8].
Fig. 2 The curve of tensile strain Fig. 3 Iron density change versus temperature [8] The tensile stress created by stretching the material under the surface of grains, thus reducing the life of the material as well as deterioration of the mechanical properties.
When compressive stress on grain pressure is applied by changing their shape and causes their strength and better mechanical properties - thereby increasing longevity [2,11-13].
Math regulation (Eq. 7) which is likewise the third step of machining conditions representing the dependency of the surface finish factor of residual stresses, wherein the correlation coefficient is more than the 80.2% and the standard deviation was 43.07.

Therefore, EAM is one of the most effective ways to simplify the processes, improving the reliability of the manufacturing processes and enhancing the properties of the final products.
As previously reported, another phenomenon involving the electroplastic effect is the dynamic recrystallization and phase transformation at a relatively low temperature occurring in a short processing time, formation of a special texture, and enhanced mechanical properties after EP manufacturing [5].
It is known that a magnetic field influences plastic properties of ferromagnetic mainly by displacing domain walls.
The application of both continuous and pulsed electric current and the effect on mechanical properties and plastic flow will be investigated in similar ways, leading to a better understanding of effect of the various parameters on the metal electroplasticity.
Machlin, Applied voltage and the plastic properties of ‘‘brittle’’ rock salt, J Appl.

The article discusses the photocatalytic properties of titanium dioxide and its use in various industries.
Introduction Ensuring the durability and aesthetics of construction facilities, as well as environmental issues are very important factors associated with the search for modern and innovative materials and technologies [1-3].
Thanks to its specific properties, such as high mechanical strength, low weight and corrosion resistance, it is widely used in the aerospace and aviation industry [4], automotive industry [5], medicine [6,7], and recently also in civil engineering [8-10].
TioCem® cement contains nano-sized titanium dioxide of a polymorph anatase variation, which has photocatalytic properties.
Its physical and mechanical properties allow it to be used in the production of concrete and precast on the same basis as standard consumer cement

Firstly, there are the conditions themselves – physical properties of the material and construction, conditioned by the use of a specific type of stone, the method of placing and the solution of construction details.
In some cases, several of the aforementioned factors combined contribute to the deterioration of stone structures[1].
The change of function is also connected to different requirements for the thermo-physical properties of interior spaces.
In case of perimeter structures, this is mostly the matter of energy criteria relating to heating, air exchange, achievement of minimum thermal insulation properties[2] and achievement of the minimum temperature of interior surface.
The building aspects analysis revealed that the existing state of salinization has been caused by several factors.

Introduction Compared with casting magnesium alloys, wrought magnesium alloys have higher mechanical strength, better ductility and more varied mechanical properties.
Simultaneously, the lower strength under high temperature and creep properties restrict the application of magnesium alloys in high temperature occasion.
The same simulated parameters were used to analyze the differences of mechanics properties, flow rule and temperature between traditional extrusion and thixo-extrusion processes.
The friction model was constant shearing stress model, whose friction factor was 0.65.
Distribution of temperature influenced the stress distribution of workpiece, which affected the local deformation resistance, and also influenced the distribution of strain and deformation fluidity.

The non-autoclaved aerated concrete block with greater than 7.5Mpa compressive strength is produced by using iron tailings, lime, aluminum powder, caustic alkali, water, cement and gypsum in the laboratory after the experimental study on the property of iron tailings produced by Anshan Iron and Steel Group.
Introduction Aerated concrete block is a kind of lightweight material for wall with good performance such as insulation properties, anti-seismic performance, simple-construction, turning waste into treasure and lower price[1] etc.
According to standard for test method of mechanical properties on ordinary concrete, standard rock sample with the size of 100×100×100 is continuous trial pressured.
Water-cement ratio is the most important factor to effect on the strength of aerated concrete.
However, oversized water-cement ratio can affects the overall shape of aerated concrete and leads to the instability because of the bubble.

Moreover, the coated materials exhibit unique optical, electrical, and catalytic properties.
The mechanical properties (e.g. hardness, adhesion to the substrate, internal stresses) as well as electronic properties (optical gap and conduction behavior) may be pre-determined to a certain extent by varying the sp3/sp2 bonding ratio [18].
DLC exhibits repellent properties towards microorganisms which may affect biofilm architecture such as including superhydrophobic low surface energy material [19].
Furthermore, it has been reported that DLC possess antibacterial and antifungal properties [49-51].
Unlike previously published data, all these factors were studied carefully, and all prospective variables were taken in to consideration.

Wear Mechanism of Nano-structured Surface Layer Under High Impact Energy Qihong CEN1,2,a, Yunhua XU 2,b , Liang FANG 1,2,c , Jinhua ZHU1,d 1 School of Mechanical and Electronic Engineering, Xian University of Architecture & Technology, Xian 710055, P.
China 2 State Key Laboratory for Mechanical Behavior of Materials, Xian Jiaotong University, Xian 710049, P.
The result showed from the wear tests of Hadfield steel and AISI 1045 steel that nanocrystalized process of subsurface becomes one of control factors to affect wear losses and wear mechanism under high impact energy.
Introduction Wear mechanism of materials is not only dependent on original microstructure and properties, but also on their evolution procedure during service.

Traditional engineering analysis commonly used the certainly mechanical model.
If considering the randomness of the structural material properties, element size, physical, boundary conditions, and external load etc, the fatigue life of the structure is almost impossible greater than the design life, this often lead to that the structure cannot satisfy the requirements to the design safety.
The randomness of the tower derrick component resistance is caused by the mechanical properties of materials, the variation of geometry and the uncertainty of the structural design calculation pattern.
The derrick modeling shown in Figure2, and the material properties shown in Table 2.
Table 2 Material properties of the derrick bar Elasticity modulus /Pa Poisson ratio Density /kg/m3 Yield limit /MPa Ultimate strength /MPa 2.1×1011 0.3 7850 345 470~630 Fig.2 The establishment of double derrick finite element model (1) Maximum weight of the drill string.