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Deformation characteristics of determination of mechanical properties of experimental teaching of cohesive soil under Constrained Conditions Yuling Zhao School of Civil Engineering and Architecture, University of Jinan, Jinan, Shandong, China, 250022 cea_zhaoyl@ujn.edu.cn Keywords: Confining conditions; Cohesive soil; The deformation; The compression modulus Abstract.
The size of the deformation directly affects the safety of the buildings.
Factors that affect the deformation is mainly the geological structure, such as moisture content, density, soil after being compressed volume smaller feature is the compressibility of soil.
Concluded that many years of practice teaching, a lot of factors influencing the strength indexes of soil, mainly including moisture content, test method, the internal structure of soil mass, etc.
Acknowledgement The national natural science youth fund fund project: Experimental study of shape memory alloy micro mechanical behavior of (project approval no. : 11302082) References [1] Geotechnical experiment technology standards

This paper presents a 2-D thermo-mechanical (TM) model of a 2-D MOSFET half-cell for assessing the TM stress in the gate-source insulating layer during SC including the phase change behavior and the temperature-dependent properties of the source metallization.
The layer of gate-source insulation marked as PMD oxide in Fig. 1 is implemented in COMSOL by using constant material properties of silicon dioxide (SiO2) due to a lack of knowledge on the material properties of the actual pre-metal dielectric (PMD) layers.
Therefore, the second study is run with dM,Cu = 4 µm using the copper material properties provided by COMSOL and from [15] for the source metallization material.
Summary The aim of the presented work is to show how the thickness and material properties of the source metallization can affect the thermo-mechanical stress in the gate-source insulating layer and to correlate the simulation results to the failures of SiC power MOSFETs observed in the short-circuit experiments.
Accordingly, the developed modelling approach represents a baseline for evaluating how different material properties can affect potential failures of SiC power MOSFETs at very high internal device temperature.

The technology is widely applied in the mechanical design and mechanical manufacturing field.
Suitable for mechanical product customization.
Whether accuracy and mechanical properties of metals can meet the requirements of industrial printing is still a problem.
Improve the processes and the structure of printing devices of 3D printing technology, to make mechanical properties of printed products better.
Through improving its printing device, Stepping speed, printing thickness and other factors, to achieve the purpose of increasing accuracy.

School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094) azyj627010@163.com, bxucheng62@163.com Keywords: Weapon, FEM, Thermal Analysis Abstract: Thermal is a important factor that affect weapon firing accuracy and security in the process of weapon fire, so thermal analysis of weapon has important meaning .
Heat is a major factor causes destruction of the weapon barrel bore, at the same time, barrel fever in varying degrees affect the weapons and usability of photoelectric sights.
Consider the impact of temperature on the thermophysical properties of materials and mechanical properties, and get the above parameter values change with temperature by engineering materials manual in the table 1.
The principles are: One, ensure to fully reflect the mechanical properties of the actual structure.
Generalized thermoelasticity of an infinite body with a cylindrical cavity and variable material properties[J].Journal of Thermal Stresses, 2005,28(5):521-532.

The radial force is the most basic mechanical property of intraluminal stent.
However, the development of medical intraluminal stents which have suitable mechanical properties and help tissue cells reproduce is still a hot research topic [1,2].
The radial force describing the ability of stent to withstand external forces is the critical pressure when buckling failure occurs and is one of the most important mechanical properties of intraluminal stent [3].
These three factors are separately changed to find the relationship of the braiding process and the radial supporting force of stents, which are twelve kind of braided intraluminal stents with different pore sizes braded by a domestic spindle type braiding machine.
The relationship of gear ratio of braiding machine and the radial compressive properties of the tubular stents is shown in Fig. 4.

The importance of the use of partial safety factors of FRP and concrete in the reliability design of concrete filled FRP tube columns is studied.
Numerous investigations have been conducted on the mechanical performances of FRP confined concrete columns.
The statistical properties of the model error are given in Table 1 [2].
Table 1 Properties of the strength model error d m s COV Distribution Eq.(2) 1.07 0.22 0.21 Lognormal Note that m=average value; s=standard derivation; COV =coefficient of variation.
However, under a relative high confinement ratio (i.e., Rf =1.9), the FRP partial safety factor is no longer affected by the variation of concrete strength but will be in a high level.

shengjijin@sina.com Key words: Tunnel Group; Excavation; Mechanical Properties; Numerical Simulation Abstract: To rely on nuclear power plant water tunnel project, through the numerical simulation methods, we analysized the extent of rock deformation and stability of the process of excavation and supporting to reveal the deformation near the working face of rock tunnel.The research results show: When carrying out tunnel excavation, the plastic deformation zone in the horizontal direction perpendicular to the tunnel axis and the vertical downward direction are extended, the vault appears to sink, but also occurred in surface subsidence.
The other is a concrete retaining inner arch, in a bracing balance has not reached the limit before the inner arch to bear the load, thus providing the required safety factor.
Tunnel group does not affect by the boundary conditions, along the axial direction we take 80m, 70m vertical holes section to take the boundary conditions for the modeling.
Other factors related to it set to 0, the quality of being passive unit does not include the results in solving them.
Simulation of mechanical parameters of material design values and sprayed concrete parameters are as shown in Table 1 and Table 2. which include E-modulus of elasticity, C-cohesion, φ-angle of friction, μ-Poisson's ratio, γ-heavy, w-gravity factor, EA-nominal rigidity, EI-bending stiffness[3].

Effect of B4C on the Mechanical Properties and Microstructure of ZrB2-SiC Based Ceramics Liu Xuana, Xu Qiang b, Zhu Shizhenc Department of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China a lxbeing@126.com, b xuq@bit.edu.cn, c zhushizhen@bit.edu.cn Key words: B4C; ZrB2-SiC; mechanical properties; microstructure; high temperature strength Abstract: ZrB2-SiC-B4C is sintered at 1700°C by spark plasma sintering process.
The effect of B4C content on the mechanical properties and microstructure of ZrB2-SiC based ceramics is studied.
In this paper the SPS method is used to produce dense ZrB2-SiC-B4C composites and their mechanical properties and high temperature strength are investigated.
Results and Discussion Relative density and mechanical property.
The mechanical properties of ZrB2-SiC-B4C are summarized in Table 1.

The mechanical properties of 22MnB5 steel sheet and the key process parameters are introduced in detail.
The mechanical properties of 22MnB5 steel sheet and the key process parameters are introduced in detail.
Mechanical properties Table 1 lists the common chemical composition of 22MnB5 steels [9].
These two factors lead to temperature increasing.
And heat loss determines the blank temperature which influences the mechanical properties in return.

Numerical Investigation on Key Process Parameters Affecting Blanking of Steel Sheet by Using Finite Element Method M.
In the blanking process, some factors such as the punch-die clearance, the tool geometry and the mechanical properties of the materials influence the quality of the cross section and the dimension precision.
The tensile properties of steel sheet were investigated by applying tensile tests to the flat sample with standard geometry according to DIN50114.
In this regard mechanical properties tend to be lower in the transverse direction which is perpendicular.
The blanking tests were performed on a mechanical press with a speed of 30 strokes/min.