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Presently, the study on tensile properties of rocks is mainly using the experimental methods of indirect tension and direct tension.
The direct tension is regarded as the best way to study tensile properties of rocks [8], so in the light of this thought, related study was carried on by some scholars.
Then, the experiment will have to be ended and the study on tensile properties of rocks in post-peak area can not be done further.
l Spring used for a long time will be out of shape and shrinking, affecting its performance.
Using two magnets has the merits of low cost, long service life, small mechanical loss and easy installation.

Table 1: Geotechnical soils properties.
Therefore, the linear elastic law (Hooke's law) is used considering the mechanical properties; Young’s Modulus E and Poisson ratio u.
This can be explained by the fact that the pore pressure variation depends on the volume change of the skeleton, which depends of the material properties.
Geotechnical properties are summerazid in Table 1.
Scott, Shear Moduli and Damping Factors of Earth Dam. 

Researches on Resource Allocation of Virtual Enterprise Based on Multi - Agent Wang Ni1, Zhang Tianrui2, Cai Dongdong3 and Li Kai4 1, 4School of Business Administration, Northeastern University, China, tianjiangruixue@126.com 2School of Mechanical Engineering and Automation, Northeastern University, China 3School of Economics, Shenyang University of Technology, China Keywords: Multi-Agent, Virtual Enterprise, Resource Allocation, Partners Abstract.
Introduction For enterprises, it was an important factor to make full use of its resources to keep competitive advantage if they want, in order to realize the optimization of resource integration and utilization.
(5) Management of invisible property :intangible assets was the concentrated reflection of the overall strength of virtual enterprise, the condensation of the technology of virtual enterprise, the design level and technology level, development level, management level and the level of marketing .
Table 2 Comparison table of BRP implementation stages of component, task and typical activities Phase component The task and typical activities Phase 1 Discover Mobilize; assess; select; engage Start the project; The development of communication strategy; Challenges and build team; Establish a vision; Assessment of organizational culture Phase 2 Design Mobilize; analyze; innovation; commit The continuous assessment of both the process (cultural and technological factors); Finally summarized, and ensure the organizational change Phase 3 Implement Mobilize; act; link The comprehensive integration of organizational change and structure, process, technology, personnel and other factors Virtual Enterprise Resource Planning Based on Agent Virtual enterprise was generated by the advent of the Internet.
Although through the implementation of MRP Ⅱ and ERP, enterprise resource was configured more efficiently, the limitations of its single enterprise affected resource configuration effect.

Statistics show that the environment failure factors in airborne electronic equipment, the failures caused by the temperature factor are 45% of the all failures, and caused by vibration is 27%, the total failures that they are caused are more than 70%, temperature and vibration are the two key factors that affect product reliability.
Analysis it’s structure CAD model, establish it’s finite element model(FEM), in order to reduce computational resources without changing the structure mechanical characteristics and calculation accuracy, simplify the CAD model locally[4], such as remove chamfering, bolt, screw holes and small round holes, model components by using same weight and volumetric mass, etc.
Choose appropriate meshing partition method, set up the contact relationships and constraints, set material property to get the finite element model for analysis(figure 2).

Interactive job shop experiments system on education Ning Zhao 1,a, Chuanbiao Xu 1,b 1 School of Mechanical Engineering University of Science and Technology Beijing Beijing 100083, China azhning@sina.com, bxcb617736@126.com Keywords: Job shop problem, education, interactive scheduling experiment system, Group adjust,Critical path.
The makespan Cmax is affected by operation Oi,jk,l, since parameter i,j and k is specific, therefore parameter l is the only key factor for Cmax.
Apparently, critical path is the key factor to make span Cmax.
A neighbourhood property for the job shop scheduling problem with application to hybrid particle swarm optimization[J].

The Real Gas Equation of State The real-gas equation of state can is well expressed as (1) Z is the compressibility factor ，which depicts the degree of real gas deviated from ideal gas.
The (k+1) th iterative calculation result of the Eq.(9) as .A SOR factor was adopted to quicken the iterative process.
On the other hand, the amount of substance of real carbon dioxide was more than ideal carbon dioxide at the same high pressure condition and seal gap because of the property of real carbon dioxide easy compressed.
The opening force and the radial leakage was different degree affected for the difference real carbon dioxide and ideal carbon dioxide in the T—groove dry gas seal.
Chinese Journal of Mechanical Engineer.

Experimental Study Ore property.
For the gold dissemination of this sample in each grade is average, complete monomer dissociation and exposing of particle were difficult to achieve by mechanical grinding.
Fig. 3 Results of the leaching time experiments According to Fig. 3, leaching time greatly affects the rate during the initial leaching period.
The experiments of size mixing in different regulators were conducted after considering these factors.

Effect of cryogenic minimum quantity lubrication (CMQL) on cutting temperature and tool wear in high-speed end milling of titanium alloys Yu Su 1, a , Ning He2, b, Liang Li2, c 1 College of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China 2 College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China a suyuliu@sohu.com,b drnhe@nuaa.edu.cn,c liliang@nuaa.edu.cn Keywords: Cryogenic minimum quantity lubrication, High-speed end milling, Cutting temperature, Tool wear, Titanium alloy Abstract.
Introduction Titanium alloys have been widely used in the aerospace, chemical, automotive and petroleum industries because of their superior mechanical properties and corrosion resistance [1].
In the high-speed machining of titanium alloys, cutting temperature is a key factor that has great effect on tool wear and machined surface quality.
The results obtained from the machining experiments have shown that tool wear was significantly affected by the cooling/lubrication conditions.

Study on the design of a preload adjustable ultrasonic vibration extrusion system HU SJ1, a, CHEN YR1, b, HOU JB1, SHU Q2 1School of Electrical and Mechanical Engineering, Lanzhou University of Technology, Lanzhou 730050,CHINA 2School of Foreign Language, Lanzhou University of Technology, Lanzhou 730050,CHINA a731501029@qq.com, b872452076@qq.com Key words: Vibration, Ultrasonic, Extrusion processing, Impedance characteristic Abstract.
Finally its vibration performance was verified by impedance characteristic test and conformed to the processing requirement. 1 Introduction With the rapid development of mechanical processing industry, more and more attention is paid to the quality of parts by every walk of life.
Figure of vibration mode of extrusion vibrator 4 Research on impedance characteristics of ultrasonic extrusion processing vibrator The impedance characteristics of ultrasonic extrusion processing vibrator is one of its important performance parameters, the ultrasonic extrusion not only affects the sound-electricity transducing efficiency of ultrasonic extrusion processing and the stability of its working, but also indirectly reflects whether the assembly of the ultrasonic vibrator is successful.
The result shows that the resonance frequency of the vibrator which is matched with system is 26.7 kHz, the motional impedance is 42.1Ω, mechanical quality factor is 387.1, these parameters could basically satisfy the performance index of ultrasonic extrusion processing system and then achieve the goal of the design.
Admittance circular curve. 5 Conclusions Ultrasonic vibration extrusion processing system will be widely used because it has good processing properties, it is suitable for small and medium-sized lathes and easy to handle.

The focus of the investigations was on the influence of the thermal(1) or the acidic(2) activation on the structure and properties of the materials.
Is it possible to generate materials with exploitable binder properties?
To optimize the materials properties, the addition of fine grains of metallic iron and different mineral powders to the fresh mixtures was tested.
Influence of additions on setting behaviour and materials properties.
Van Denventer: Geopolymers, Structure Processing, Properties and Industrial Applications, CRD Press, Woodhead Publ., Oxford, 2009, p. 3 [2] H.