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Stress Analysis and fatigue life estimation of Bridge Rubber Bearing Li Chunshu a, Yuan Guangming b , Feng Haoc School of Mechanical Engineering, Hebei University of Technology, Tianjin, China achunshuli@126.com, bygming@hebut.edu, cfhhaohao@126.com Keywords: Bridge Rubber Bearing ; Stress Analysis; Finite Element ; Fatigue Life Abstract.
The rubber bearing take an important effect on the normal load and security of bridge of its mechanical properties and reliability.
Simply supported bridge compared to continuous beam bridge in the same span conditions rubber bearing will produce greater relative displacement, and the properties of rubber bearing also affect the dynamic response of the bridge.
Shape factor of the plate rubber bearing in highway bridges is generally from 5 to 12 in[8].When the shape factor S>20,the shear stress of the finite element consistent with the incompressible elastic force theory and when S<20,the rubber layer and the steel plate attached at the edge of shear stress concentration phenomenon exists.
The following is amplification coefficient and shape factor as a function of type: (2) where K is amplification coefficient, S is shape factor.

The mechanical properties of the composites were higher than those of the composites containing micro-scale CaF2, and the fracture toughness of the composites was higher than that of the composites without CaF2.
A12O3 ceramic tool has excellent high temperature mechanical properties and wear resistance, but it is brittle.
Table 7 Table of primary and secondary order of various factors of AT tool Table of primary and secondary order of various factors of AT tool Test index Primary and secondary order Cutting force F ap>fz>v Cutting temperature T ap>fz>v Surface roughness Ra v>ap>fz Table 8 Table of primary and secondary order of various factors of ATC tool Table of primary and secondary order of various factors of ATC tool Test index Primary and secondary order Cutting force F fz>ap>v Cutting temperature T ap>fz>v Surface roughness Ra v>ap>fz As can be seen from Tables 7 and 8, the addition of solid lubricant did not change the order in which the amount of cutting affects cutting temperature and surface roughness.
Thermophysical properties of Cu - matrix composites manufactured using Cu powder coated with graphene.
Effect of nanosized CaF2 on mechanical properties of self-lubricating ceramic material.

However, after conventional fusion joining, e.g. after laser beam welding, heat affected zones, porosity or grain growth may occur and impair the local properties [1, 2].
Beside mechanical properties of compound the formation of bonding zone are presented.
Due to the different material properties the production process of compounds has to meet sophisticated requirements.
The emphasis of the investigations is thereby on the formation of the bonding zone and the determination of the compound properties of the compounds.
The influences of the initial joint before the co-extrusion process and the material combination on the bonding properties are of interest.

Both UML and OCL, while typically related to software, may be used also for modeling systems from other engineering subject areas, such as electrical or mechanical engineering.
A class diagram is the UML main building block that shows, at an abstract level, elements of the developed system, their properties and operations – thus it possess the capacity to reflect effectively the structure of the system.
Mutation operators are key elements in mutation testing, as the number of mutants they generate and the quality of these mutants affect the process, costs and the results of mutation testing.
Data collected during the experiment were used to calculate, for the evaluated mutation operators, their contribution factors (CF), mutation scores (MS) and impact indicators (II).
However, the results seem also to suggest that some of these operators may be rejected without affecting depreciatingly the mutation testing, while other should always be applied.

Introduction Al-Mg-Si alloys (6xxx series) are widely used for extrusions comprising up to 80% of the extruded shapes due to easy fabrication and good combination of mechanical properties and corrosion resistance [1, 2].
Homogenization temperature is also an important factor affecting the dispersoid density and size during homogenization [9] for alloys containing Mn.
Rometsch, Wang, S.C., Harriss, A., Gregson, P.J. and Starink, M.J., Aluminium Alloys: Their Physical and Mechanical Properties. (2002)
Hatch, Aluminum: properties and physical metallurgy. (1984) [15] B.
Nes, Aluminium Alloys: Their Physical and Mechanical Properties. (2000).

Introduction Intermetallic γ-TiAl based alloys are considered as promising materials for aerospace and automotive industries, and potentially can be used for manufacturing of gas turbine blades, turbine rotor discs, and automobile valves due to low density and good high-temperature properties [1, 2].
Gleeble 3800 thermo-mechanical machine was used for the tests.
Mechanical behavior.
The combination of a number of factors (high deformation temperatures, small grain size, the existence of soft β phase laths limiting the α grains/particles coarsening and contributing to faster diffusion) promotes SP flow of the alloy at high strain rates.
Mayer, Design, processing, microstructure, properties, and applications of advanced intermetallic TiAl alloys, Adv.

The ductility of coupling walls is a key factor affecting the ultimate bearing capacity of coupled shear wall structure.
It can be seen by making a comparison of the results, that different opening forms have a great effect on the mechanical properties .With the increase of pore porosity, the hysteretic behavior and the maximum bearing capacity show a declined tendency.
The mechanical properties of opening up-down is better than the other opening forms, and with the increase of pore areas, its performance decline slightly.
The mechanical properties of biserial opening form and central opening form is similar while uniserial opening form is the least efficient.
Based on the Kriging agent model to optimize damper coupling beam analysis Through the preliminary analysis of various forms of holes coupling beam dampers on the mechanical properties, we can select better mechanical properties focus on opening up and down even in the form of beam dampers for further optimization design.

Effect of Milling Parameters on the Structural, Microstructural and Physical Properties of Alumina-Titania-Graphite Nanocomposite Farah Wahida ISMAIL1,a, Mohd Hasmizam RAZALI2,b, Nik Nurul Anis NIK YUSOFF1,c and Mahani YUSOFF 1,d * 1Faculty of Bioengineering and Technology, Universiti Malaysia Kelantan, Locked Bag 100, 17600 Jeli, Kelantan, Malaysia 2School of Fundamental Sciences, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia afarahwahidaismail@gmail.com, bmdhasmizam@umt.edu.my, canis.ny@umk.edu.my, dmahani@umk.edu.my Keywords: Alumina matrix; Nanocomposite; Milling time; Milling speed Abstract.
This study focused on evaluate the effects on the structural, microstructural and physical properties of Al2O3-TiO2-graphite nanocomposite.
Higher milling time and speed produce finer and flaky shape of Al2O3-TiO2-graphite particles which then affects the green density of the composite.
Graphite addition in ceramic composite also improve the mechanical properties of ceramic based composite [6].
The instrument contributing factor, Bi was removed by following Gaussian peak shape function [9]: (Eq. 2) where Bi is broadening due to instrumental and Bo are the broadening due to size and strain.

Manufacturers need to chose tools with the shape and geometry which are suitable to profile turning to ensure gouge-free cutting condition, delicate roughness, physico-mechanical properties of part surface, the rigidity of the technology system and the tool-life.
The main factor directly influence on the cutting process is the clearance angle that is measured in the normal section of the edge.
- Materials: SUS304 steel has chemical composition, mechanical properties according to JIS G-4303-91 standard
The result is consistent with the theory. 2) The processing surface roughness is significantly affected by the part profile.
Tuyen, “Theory of surface shaping and application in mechanical engineering”, Vietnam education Science and Technics Publishing House, Hanoi, 2013

Generated heat in NiTi wire depends on various factors such as length and diameter of materials, resistivity, and the properties of given electrical current.
Austenite phase formed the basis for the properties of Super Elasticity (SE) ​​on SMAs, while the martensite phase will produce Behavioral Shape Memory Effect (SME).
The variation of electrics power affect to the temperature change of SM495 NiTi wire.
Bruncko, Microstructure and properties of NiTi and CuAlNi shape memory alloys. (2004:2) [3] Claude G.
II: Mechanical Behavior and Scaling,”ASCE Journal of Engineering Mechanics, 133(9), 1019-1029. (2007) [5] Filipo Morra, Rezia Molfino, Francesco Cepolina, Miniature-gripping device.