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The results show that the slit in the floor open-angle measures, due to the reinforcement in the slab near the beam end is cut off, the beam end flexural capacity reduced by 19%, the column end bearing capacity is very small, the bearing capacity of the beams side of the gap increases, the does not affect the bearing capacity of the premise to ensure strong column and weak beam seismic requirements.
"Strong column and weak beam of many factors, of which the floor slab reinforced the negative moment of the beam end flexural capacity had a significant effect.
The calculation of floor slabs reinforced stress required reduction calculation, equation (5), (6) and were plate top and the bottom plate of steel stress reduction factor.
Member section size: beam 350mm x 700mm, corner posts, side column 450mm × 450mm, middle column 600mm x 600mm, thickness of plate 180mm, concrete grade C30 , the mechanical properties of the standard value.

The process is quite simple, and it has no adverse effect on other properties of concrete.
Both of the two factors result in slump loss of concrete. [4] Material analysis.
Both of the two factors above can increase the consistence of fresh concrete, thus decreasing the slump of fresh concrete.
Properties of aggregate, such as the maximum grain size, shape, texture, graduation, water-absorbing capacity and so on, can affect the workability of fresh concrete on different levels.
Unit water dosage is the most important factor for the fluidity of concrete.

This paper describes observations related to the fundamental properties of reinforcing steel such as buckling, hardening, diminishing yield plateau and growth of curvature, Bauschinger effect, and low-cycle fatigue and strength degradation that are relevant to the overall task of developing an accurate material model for use in seismic response analysis of reinforced concrete structures.
A simple bilinear model, however, is still commonly adopted as the constitutive model of reinforcing steel in nonlinear analysis for RC structures while confined concrete properties are modeled using confined models proposed by Mander et al [1], Hoshikuma et al [2], etc.
(a) (b) Figure 1: Comparison of interstory drift demands in a moment frame building subjected to a strong ground motion - (a) Different models of reinforcing steel and Mander model for confined concrete; (b) Different models of reinforcing steel and Hoshikuma model for confined concrete Although there certainly are other important factors affecting seismic structural response such as concrete confinement, non-stationary characteristics of earthquakes, beam-column joint properties, etc., this paper, however, only focuses on thoroughly investigating and describing the main features of reinforcing steel, which need to be incorporated in a robust constitutive model of reinforcing steel.
The concepts described here are expected to contribute to future research on improving the modeling of reinforcing steel as well as to comprehend essential and critical properties of reinforcing steel bars observed during both monotonic and cyclic tests.
Coffin: American Society of Mechanical Engineers, Vol. 76 (1954), pp. 931-950

the Casting Process of The High Chromium Cast Iron Grinding Ball in Mill Zhebo Zhou1, a, Qinghong Zhou2, b, Haizhen Liang3, c, Jinlong Zhang4, d and Nannan Zhu5, e 1Department of Mechanical Engineering, Anhui University of Science and Technology, Huainan, China 2Department of Mechanical Engineering, Anhui University of Science and Technology, Huainan, China 3Department of Mechanical Engineering, Anhui University of Science and Technology, Huainan, China 4Department of Mechanical Engineering, Anhui University of Science and Technology, Huainan, China 5Department of Mechanical Engineering, Anhui University of Science and Technology, Huainan, China azhouzhebo@21cn.com, bzhou_qinghong@sina.cn, clianghaizhen2010@163.com,dzhangjinlong063@126.com,e zhunannan021@126.com Keywords: Grinding ball, High chromium cast iron, Metal mold, Casting processes Abstract.
The casting of the grinding ball 2.1 The choice of chemical composition 1) Carbon Carbon content is the important factor which decides hardness and toughness of high chromium cast-iron of grinding ball.
It results in grinding ball’s seam being too big, so it affects its surface quality and causes grinding ball being capsule form which influence grinding ball’s roundness.
Through the chemical composition analysis, the test of metallographic organization and mechanical properties, and service performance test, every indicator of grinding ball accords with the requirements of the standard.
[3] Zhongcheng Zhang, Study on Impact Wear Properties of High Chromium Cast Iron [J], FOUNDRY TECHNOLOGY

Vacuum degree of The vacuum chamber is a direct influence factor on the adsorption properties of the absorption hole airflow, which required the maximum can be calculated though the following formula[12]
(5) Where, Hcmax is vacuum maximum value of the vacuum chamber, kPa; d is suction hole diameter of the seed plate, cm; C is distance between the center of seed gravity and the suction seed plate, cm; m is one seed quality, kg; v is line speed at the center of the suction hole on the row seed plate, m/s; r is turning radius at the suction hole of the row seed plate, m; g is acceleration due to gravity, m/s2; λ is seed frictional resistance combined factor, λ=(6 to 10) tan θ, θ is natural angle of repose of the seed; K1 is coefficient of reliability of the absorption seed, taking 1.8 to 2.0, thousand grain weight of the seed are small and shape spherical, taking a small value; K2 is outsidecondition factor, taking 1.6 to 2.0, it take greater when the seed grain weight is large.
Because the distribution location of the suction holes centers in the diameter direction were different, the airflow field of the vacuum chamber correspondly changed, and the suction seed performance was affected.
Fig.4 Vacuum chamber export flow velocity of the suction hole different distribution location Seed metering performance testing and analysis Airflow field finite element analysis of the air-suction seed metering device of no-tillage planter ignored the effects of vibration on the flow field, for the vibration amplitude of the device is smaller and the vibration is only on the overall airflow field and is not its internal disturbance, exciting and traditional Metering performance test of air-suction metering device have been done to further understand the static and dynamic airflow field`s impact on seed adsorption properties.
[12] Chinese Agricultural Machinery Institute, in: Practical Mechanical Design Handbook (below). edtied by Mechanical Industry Press, China, (1998)

Influence of microstructure and stress ratio on fatigue crack propagation in TiAl alloy Yanrui Zuo 1,2,a, Zhiyuan Rui 1,2,b, Ruicheng Feng 1,2,c，Dechun Luo 1,2,d, Changfeng Yan 1,2,e. 1Key Laboratory of Digital Manufacturing Technology and Application, The Ministry of Education, Lanzhou University of Technology 2School of Mechanical and Electronical Engineering, Lanzhou University of Technology, Lanzhou, 730050, China azuoyanrui_reena@126.com, bzhiy_rui@163.com, cfrcly@163.com, d119244238@qq.com, echangf_yan@163.com Keywords: fatigue crack propagation; TiAl alloy; microstructure; stress ratio Abstract.
The fatigue crack propagation rate is affected by many factors, such as temperatures, environment, stress ratio, microstructure and Experiments preformed by A.H.Rosenberger [5] has found the influence of environment on fatigue crack growth of γ-TiAl alloys.
Mid-range crack growth rates can be described by the Paris relation as: (1) Whereis the effective stress intensity factor range. is the crack growth rate.
Fatigue properties of TiAl alloys.

Effect of the Friction Coefficient on Large Strain Extrusion Machining Ping Lina, Zi Chun Xieb and Qing Lic School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, China a511086793@qq.com, b375141000@qq.com, cliqing6029@qq.com Keywords: Large strain extrusion machining (LSEM); Bulk nanostructured materials; Deformation behavior; Friction coefficient Abstract.
The material of workpiece is pure copper and the properties for it are as follows: Young’s modulus of 120 GPa, Yield stress of 150 MPa, and Possion’s ratio of 0.3.
Meanwhile the value of the friction coefficient affects the machined surface, as shown in Fig. 4.
In spite of a lot of studies published recently, factors of the inhomogeneous deformation were not elucidated systematically.
Friction is probably the most important factor in all metal forming processes, including LSEM.

Introduction Closed cell aluminium foams are lightweight materials of cellular structure with unique combination of physical and mechanical properties, i.e. high specific stiffness, high absorbing ability for mechanical, acoustic, and electromagnetic energies, etc.
Difficult process control causes foam properties to low reproducibility.
Mechanical testing.
As shown in Table 1 average cell size of CaCO3-foams is at least smaller by factor 2 than that of TiH2-foams.
Characteristics Material σy [MPa] σpl [MPa] εD Apl [MJ/m 3] CaCO3-foam 8.5 14.9 0.48 4.4 TiH2-foam 7.0 13.7 0.50 3.9 The cell wall material can largely affect deformation behaviour and mechanical performance of closed-cell foams.

Based on different steering power sources, the steering system can be divided as mechanical steering and dynamic steering.
Affect on Ride Performance and Comfort.
In sum, we should fully consider the impact of various factors, according to the overall objective function optimization to determine the engine start/stop strategy.
Frequently starting/stopping the engine during the moving will bring drivers some psychological pressure, and even psychological panic and lack of driving confidence, thereby affecting the judging of driving and the accuracy of operation [9].
Xue, etc: Chinese Journal of Mechanical Engineering, Vol. 44 (2008) No.4, pp.87-91.

Study of high-pressure waterjet characteristics based on CFD simulation Liping Cao1,a, Shi Liu2,b,Yaosong Huang1,c and Qian Liu and1,d Zhihong Li1,e 1School of Power, Energy and Mechanical Engineering, North China Electric Power University, Beijing 102206, China 2School of Control and Computer Engineering, North China Electric Power University, 102206 Beijing, China aclp198@126.com, bliushi_ncepu@yahoo.com.cn, chys1986@126.com, dliuqian0607@163.com, elizhihong@ncepu.edu.cn Keywords: High-pressure water jet, flow field, axial velocity, dynamic pressure Abstract.
Nozzle spacing is an important factor influencing the effect of high-pressure water jet cleaning.
The inlet boundary condition: inlet pressure of jet MPa, the volume fraction of water is 1; the exit boundary condition: the exit pressure of jet Pa; wall condition: no-slip wall condition; material property setting: water density is 1000 kg/m3 and viscosity is 8e-04 kg/(m3·s).
If the overlap is too small, within the effective range of a row of nozzles, in some places there will be not good to cover the entire bundle width, thereby affecting the cleaning effect.