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In the past, researches on the mechanical properties of the CFST columns mainly included the bearing capacity, deformation behavior and energy-dissipation ability under the influence of the confinement coefficient and steel ratio [1-5]; But under the same steel ratio, the research on how variation of section shape of steel tube affected the mechanical behavior of CFST columns was relatively rare.
The working mechanism, ductility and ultimate bearing capacity of this new type composite CFSST short column was studied and the effects of variation of steel tube’s section shape on the mechanical properties of CFSST short column were analyzed with the change of confinement index, concrete strength and steel ratio.
C30 and C60 concrete were used in the specimens, the concrete material properties were determined by testing the concrete cubes.
This indicates that the mechanical properties and working states of specimens can be improved better by the adjustment of column’s section form and no increasing of the steel ratio, the mechanical state of composite columns was close to ideal elastic-plastic body.
The load-displacement curves for four specimens with different parameters are showed in Figure 4, the influence laws of various factors on the mechanical properties of the composite CFSST columns are analyzed as follows: Figure 4 Load-placement curves 1.

The analysis of variance showed that the charcoal types (A), and screw press speed (B) significantly affected pressing capacity and properties of charcoal block, but screw press speed did not significantly affect heating value and utilization efficiency (Table 2).
Sokhansanj, Process conditions affecting the physical quality of alfalfa pellets, American Society of Agricultural Engineers, Vol. 12, No. 3, p. 345–350, 1996
Young, Effect of colloidal binder and other factors on pelleting, Feedstuffs, Vol. 45, No. 49, p. 21–22, 1973
Pulkinen, A study of factors affecting pellet durability and pelleting efficiency in the production of dehydrated alfalfa pellets, A Special Report.
Mahuttanyavanitcha, Physical and mechanical properties of Jatropha curcas L. fruits nuts and kernels, Biosystems Engineering, Vol. 97, p. 201– 207, 2007

In the paper, the basic principle and connection influence factors of copper-based shape memory alloy pipe joint were described.
Now, these pipes have possessed many excellent properties such as high resistance to mechanical abrasion, high chemical stability, good heat resistance, good acid resistance, good alkali resistance, salt resistance, water resistance, and anti-microbial erosion, but pipe connection problems have not been solved well yet in China.
The minimum wall thickness of pipe joint is decided by the maximum stress required by the actual environment and the elastic properties of the connecting pipe.
The main performance indexes of the copper-based shape memory alloy pipe joint used in experiment (1) The mechanical properties of the copper-based pipe joint: tensile strength≥700MP a; yield strength≥700MP a; elongation percentage δ5≥30% (2) The memory shrinkage rate of the shape memory alloy pipe joint: ⊿L/L≥1% (3) The gas pressure that can be withstood by the gas pipeline at work: P≥680MPa (4) The oxidation resistance propertyy of pipe joint: 0.00002g/m m2 is weighted for 1h at the air furnace insulation 600℃ (5) The corrosion resistant property of pipe joint: weightlessness at room temperature 20℃ and soaking in 5% HCl is 3h≦0.1008g, 10h≦0.4797g and 20h≦1.0723g Sample production and result analysis The selection of materials For the memory alloy seal pipe joint used in the study, the copper shape memory alloy material smelted in a non-vacuum induction furnace is used.
The pipe joint made of the copper-based shape memory alloy material features excellent compactness, and also this type of material owns high connection strength and good tightness property.

Introduction Seepage is one of the key factors in affecting the security and stability of mine tailings dam.
(a) The initial dam (b) The accumulative dam Fig. 1 Photos of the target tailings dam According to the tailings geotechnical study and the dam design information, material partition of the tailings was shown in Figure 2, and the mechanical parameters of materials were listed in Table 1.
Table 1 Mechanical properties of each stratum Lithology Specific weight /KN/m3 Cohesion /kPa Internal friction angle/º Permeability coefficient /cm/s Elastic modulus /MPa Poisson’s ratio Initial dam 22 0 38 0.2 70 0.22 Plain fill 19.23 46.52 15.41 9.28×10-3 25 0.35 Phosphorus gypsum 16.0 0.3 30 5.56×10-4 33 0.3 Highly weathered sandstone 25.5 13.1 37.07 1.17×10-4 10000 0.2 Based on the actual dam shown in Fig.1, a numerical model was established by using ANSYS software.

Study on block structure optimization of single degree of freedom crankshaft fillet rolling machine Shaojun Han1, a, Chao Chen2, b, Xiong Li3, c 1Department of Electrical and Mechanical Engineering Wuhan University of Technology Wuhan, China 2Department of Electrical and Mechanical Engineering Wuhan University of Technology Wuhan, China 3Tri-Ring Group Corporation, Wuhan, China ahanshjun@163.com, b578908786@qq.com, c249444797@qq.com Keywords: SDOF rolling arm, ANSYS, Optimization Abstract.
According to the Q235 steel characteristics defined in Table1, to define the material properties.
The main factors affecting the strength of the rolling arm are the arm thickness, material and structural shape.

The cause of tension yarn breaks is always excessive spinning tension, which affects the weakest yarn point i.e. the point, between the take-off nozzle and the take-up roller.
Spinning stability in rotor spinning is largely influenced by the following four factors.
One of those factors is Σ the numbers of fibres in the yarn cross-section.
Fig.2 Yarn tension on rotor schema Observation: Assuming that there is rotation of Oxyz framework (rotor) which is affect yarn at ϕ', while x-axis is along with yarn movement, and it has rotation on y-axis.
,Wrapper Fibres in Open-End Rotor-Spun Yarns: Yarn Properties and Wrapper Fibres,FIBRES & TEXTILES in Eastern Europa,2005.

In case of samples used in the fundamental study of the metals absorptivity behaviour and the factors affecting the absorptivity evolution, in the carried out experiments the austenitic stainless steel AISI 316L was used [9], whose properties are listed in table 2.
Table 2- AISI 316 stainless steel properties Density [Kg/m3] Thermal conductivity [W/m*ºC] Specific heat [J/Kg*ºC] Elasticity modulus [MPa] Electrical resistivity [Ω*m] The latent temperature of melting [J/Kg] The latent temperature of vaporization [J/Kg] Melting temperature [ºC] Vaporization temperature [ºC] 8000 16 500 193*103 74*10-4 300*103 6500*103 1400 3000 Neglecting the radiating power and convection losses, which are generally low, the laser power absorbed by the material may be expressed by the equation: P=ρwtvCpTa-T0+Lm+Pcon (1) Where ρ, Cp and Lm represent the density, the heat capacity and the melting latent temperature of the metal, T0 is the ambient temperature, Ta is the preheating temperature of the material.
Conclusions Weld seams with excellent quality can be obtained for different types of laser unit but differ fundamentally from the point of dimensions, quality and mechanical properties.
Laser welding is a complex process and through preheating the material, the geometry, microstructure and physical properties of weld bead are modified.
[8] K.Suresh Kumar, Analytical Modeling of Temperature Distribution, Peak Temperature, Cooling Rate and Thermal Cycles in a Solid Work Piece Welded By Laser Welding Process, Procedia Materials Science 6 ( 2014 ) 821 – 834; [9] Danial Kianersi , Amir Mostafaei , Ahmad Ali Amadeh, Resistance spot welding joints of AISI 316L austenitic stainless steel sheets: Phase transformations, mechanical properties and microstructure characterizations, Materials and Design 61 (2014) 251–263;

To improve thermal shock resistance of MgO-C materials, the properties of MgO-C materials with different graphite size distributions are researched.
The graphite in the MgO-C materials is the important factor influencing the properties of materials.
Through adjusting the graphite content with different size, as shown in Fig.2, the properties of MgO-C materials with different graphite size distributions are researched.
Cylinder specimens of Ф100mm×700mm are prepared for thermal shock resistance testing. 1.3 Properties testing After heat-treatment, the properties of materials are characterized by measurement of modulus of rupture at room temperature and at 1400℃, elastic modulus, corrosion resistance, bulk density, thermal expansion coefficient and apparent porosity.
A B C Fig.3 (A)Bulk density , (B) Apparent porosity and (C) E of MgO-C materials with different graphite size 2.2 Mechanical properties Fig.3(C) is the elastic modulus of MgO-C materials with different graphite particle distributions.

Radiation-induced swelling is one of the factors restricting an increase in fuel burn-up for claddings made of these steels [1-3].
Swelling, i.e. void formation and growth, leads to fuel pin deformation, thus affecting thermohydraulic characteristics of the reactor core.
Moreover, porosity changes physical and mechanical properties of the cladding material.
Acknowledgments The study was supported by the Research Institute of Nuclear Materials, JSC and the Russian Foundation for Basic Research (research project No. 18-33-00135-mol_a) using the equipment in the Laboratory of Structured Analysis, and Material and Nanomaterial Properties of the Ural Federal University User Facility.
Stiegler, The effect of thermo-mechanical treatments on void formation in irradiated stainless steel, J.

Introduction A liquid crystal, as a typical anisotropic material, consists of rod-like or disc-shaped molecules, whose physical properties such as dielectric constants, magnetic susceptibilities, viscosities, and elastic constants depend on the orientation state of the molecules; in other words, it has anisotropy [1].
Our laboratory (LIQUID CRYSTAL LAB OF HENAN UNIVERSITY OF TECHNOLOGY) is dedicated to the study of the anisotropy of liquid crystals from the mechanical viewpoint and aims to develop disciplines in the mechanics or dynamics field of liquid crystals, to apply the findings to elementary techniques in mechanics, and to develop novel microfluidics drive and control technology that is considerably different from conventional ones [2].
Previous research showed that many of the most important physical phenomena exhibited by the nematic phase, such as its unusual flow properties or its response to electric and magnetic field, can be studied by regarding the liquid crystal as a continuous medium.
With the 1-D model, there are two important factors affecting the kickback effect: the gap of the cell and the velocity of the upper plate when the electric field is released. 2.
Liang, The influenced of carbon fiber orientation on the mechanical and tri-biological behavior of carbon fiber/LCP composites, Materials Chemistry and Physics, 102(2007), 187-194 [6] Y.