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The ideal axis compression member occurs at the branch point instability, where it mutates from one equilibrium state to another equilibrium state, and with mechanical properties having different fundamental changes.
Figure.1 The facade of the main bridge The Establishment of the Modal .The unit type and material properties are shown in Table.1.
Table.1 The unit type and material properties Component Grade Unit type Elastic modulus [MPa] Poisson's ratio Density [kg/m3] girder C55 Solid65 3.55 × 104 0.2 2,600 pylon C50 Solid65 3.45 × 104 0.2 2,600 pre-stressed steel Φs15.2 Link10 1.95 × 105 0.3 7,850 Adopt fixed constraint at the bottom of the piers.
The security factor of the single free-standing tower is 42.3.The security factors of two conditions are greater than 4.
(2) The security factors of the bridge and the single free-standing tower are greater than 4, They meet the requirement of related specification.

Such a deposited surface can functionalize and reclaim the factors extending their service existence [2].
When metal like steels are hardfaced, the microstructural changes occur in the substrate material especially in the Heat affected Zone (HAZ) and this will consequently influence the mechanical properties and in turn on the service behaviour of the hardfaced component.
Tyagi, Study on microstructure and wear properties of different nickel base hardfacing alloys deposited on austenitic stainless steel, Surf.
[11] Manikandan M, Hari P.R, Vishnu G, Arivarasu M, Devendranath Ramkumar K, Arivazhagan N, Nageswara Rao M, and Reddy G.M, Investigation of microstructure and mechanical properties of super alloy C-276 by continuous Nd:YAG laser welding, Procedia Mater.
[12] Luciano da Silva Ferreira, Karin Graf and Adriano Scheid, Microstructure and properties of nickel-based C-276 alloy coatings by PTA on AISI 316L and API 5L X70 steel substrates, Mater.

The mechanics properties of the contact surface between beam and rock can be simulated more accurately by using the finite element method, so as the deformation and force analysis of the whole crane girder.
The anti-sliding stability safety factor [KS] =1.30, the tensile-strength safety factor of tensile anchor bolt [Kt] =1.60, the corresponding design allowable tensile stress [σ] =210MPa.
From the calculation results, we know that the axial tension of upper tensile anchor bolt and tensile-strength safety factor of result two is same as result one ,but the anti-sliding stability safety factor is bigger than result one.
Some mechanical properties of rock and crane girder are not very homogeneous, which causes great difficulties to use the finite element method for simulation.
The rigid body limit equilibrium method is flawed, and the finite element method is easy affected by the parameters.

Modeling of test platform was built to study the mechanical structure in theory.
However, the gear system displays undesirable characteristics such as the backlash, which becomes a mechanical imperfection.
Design of key part The platform uses a flexible coupling which allows a certain deviation in the case which does not affect the vibration and the life of the entire connection.
Gear meshing Fig.8 Total deformation Compared with the property of the material, the custom-made couplings can meet requirements.
Analysis static structure The backlash caused by shape-changed of the gears is one of the main influence factors, so it is important to analysis the static structure to find out the maximum deformation, equivalent (von-Mises) stress and equivalent elastic strain.

Macroeconomic risks Under the economic environment, those factors that affect planning of charging facilities mainly include the speed of economic growth, urbanization level, people disposable income and so on.
Evaluation factors set is the collection of the various factors influencing the evaluation objects, establish factor set as , it should meet requirement that ,,.Then divide into sub factors set as .
To reflect the importance of these factors,we use to show the corresponding weight of factors.
The policy and legal risks are the most critical factors that affect business investment, technology and industry risks rank only second to police and legal risks.
Therefore, land resource is the second factors that affect the construction of charging facilities

Mechanical properties, including modulus of rupture (MOR), modulus of elasticity (MOE), internal bond strength (IB), and water resistance are very important specifications for particleboards.
Mechanical properties were determined by using a testing machine and follows an ASTM standard method （GB/T 9846.1～9846.8, 2004）.
Results and discussion Physical properties of Modified UF resin.
A critical factor for strorage stablity of resin is pH.
The results of this study demonstrated that the water-resistance and mechanical properties particleboard improved with increasing of melamine intensity.

There are 3 key factors to determine that the brucite fiber can be used in asphalt concrete. (1) The adhesion property with the asphalt. (2) Tensile strength. (3) Construction performance: dispersion uniformity and heat resistance.
Results of the low temperature anti-cracking performance of the brucite fiber asphalt binder, the burcite fiber asphalt concrete and the related factors affecting the possible application of brucite-fiber-reinforced asphalt concrete are reported.
From Table 1, it can be seen that brucite fiber have some excellent properties, such as the high tensile strength which is acceptable mechanical performance and the stable chemical composition.
The properties of asphalt binder in low temperature are decreased by the addition of fiber.
(2) Properties of asphalt concrete in low temperature are improved by adding brucite fiber.

Acoustic properties of building structures are currently very actual theme with regard to the development of new building and insulating materials, while the methods for estimating the airborne sound reduction index evolved mainly in the second half of the 20th century.
Representative value, which is compared with standards - CSN 73 0532 Acoustics - Rating of sound insulation of buildings and acoustic properties of building elements – Requirements, is then single number value expressed as a weighted sound reduction index RW, R´W.
This type of construction was chosen especially considering the fact, that the characteristics of the individual cladding materials are still evolving and their mechanical parameters can be significantly different from the parameters of materials used at the time when the selected prediction methods were determined.
Factors Affecting Sound Insulation Ability of Light-weight Wall Constructions Airborne sound insulation of double building structures (Fig. 1 and Fig. 2) is very complex characteristic which is affected by many factors.
Vodickova, Airtightness and acoustic properties of family house from straw.

Introduction In the realm of mechanical engineering, thermal management is a crucial aspect that ensures optimal system performance.
Factors influencing temperature distribution include the convective heat transfer coefficient, the thermal conductivity of the fin material, and the fluid flow rate.
The convective heat transfer coefficient is affected by fluid velocity, fluid viscosity, and fluid thermal properties.
Changes in the value of h significantly affect the time it takes for the fin to reach a steady state.
The value of h also affects the heat transfer from the fin to the surroundings or the surrounding fluid.

The fiber-reinforced composites subjected to compressive loads can also exhibit different failure modes [2], and show different aspects and sequence of events to fracture, besides being governed by different properties.
One example is the work by Stecenko and Stevanovic [10] on how the fiber waviness affects the compressive behavior.
As the fracture propagates accordingly to the laminate properties, further applying the load after the specimen failure will only evidence the failure modes and not alter it.
Chambers, Understanding the factors affecting the compressive testing of unidirectional carbon fibre composites, Compos.
Rezende, Evaluation of mechanical properties of four different carbon/epoxy composites used in aeronautical field, Mater.