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Cutting heat and temperature which is caused by cutting heat is one of the important physical factors which affect metal cutting.
Shapes and influencing factors of the cuttings: Generally speaking, in metal processing,scraps can be in the shape of ribbon cuttings, collapse, C shape, tight rolls and spiral ones etc.
When the concentration of chemical elements of tool and work-piece material has large difference, they will spread to each other in solid, which makes the chemical reaction of the tool, decreases the material properties, causes the tool wear and abrasion, which is called diffusion wear[2].
In other factors, such as the ap = 0.15 mm, f = 0.1 mm/r and so on remain unchanged, the deformation of the chip have a main connection with temperature.
(Beijing: Mechanical Industry Press, China 1991)

The original equipment manufacturing mode of the multi-species, multi-process and multi-unit is the main mode in Zhejiang manufacturing industry, the workshop layout affect directly the production efficiency and cost.
The paper analyzed the impact factors of discrete operations workshop layout, established the Multi-Agent mathematical model of discrete operations workshop layout by using Multi-Agent theory, put forward the objective function of the workshop layout, and carried out empirical study by typical enterprises.
In 2001, Dobrila et al used SCSIM-Agent technique to analyze the behavior of disturbances and property change of workshop layout before when it is uncertain[6].
This kind of layout affects the fluency of the system and also the production capacity, cost and production flexibility.
There are 601 economic zones of the block characteristics (mechanical, electronic, metal and plastic products, etc.) whose annual production value is more than one billion yuan in Zhejiang Province.

Pattern for calculating of risk number: R = M x U – P x (M/30) (1) Where: R – is final value of risk number M – risk factor caused by machine U – risk factor caused by environment P – factor of person’s capability to handle the risk Value of coefficient which are assigned to each item of reviewed factors are from exactly defined intervals, even when sensitivity of scoring scale depends of specific conditions and lonely reviewers [11].
When we valuate chosen system (machine, activity, work space etc.) such properties, characteristics and aspects are identified which may be possible cause of damage, accident, health treat or other negative event.
Solitary selection of these variables for mentioned criteria of reviewed factors machine, work environment, human element is accessible only after confirming Edit button form menu of this form.
In frame of capability of person to handle the risk examination, following criteria regarding operator qualification, physical and mental factors and work organization are revied.
Among mental factors which may generate danger belong: · work load · spaciousness of workplace · influence of conflicts on workshop · influence of decision in affect · reactions in emergency situations During valuation of physical and mental factors mental and physical suitability of person for responsible work is examined.

Coal and gas bursting is an important factor of causing coal mine safety accident, it may cause major accident, even effect on the safety of human life.
Human disturbance is an important factor of causing coal and gas outburst.
It will seriously affect the normal production of mine, and can lead to significant casualties.
According to the properties of coal seam, the length of expanding is different also, its length from 300 mm to 1000 mm..
Fig.3 Mechanical model of injecting water hole According to the elastic theory, the stress of the dot that the distance is between the dot and the injection hole center can be shown as: (2) (3) For the injecting hole, the crack must be appearing at the edge of the hole firstly, that is the most dangerous dot is the dot of the edge.

Microwave Absorbing Properties of Flaky Fe-Si-Al Alloy Powder-Rubber Composites Kyung-Sub Lee1,a , Yeo-Chun Yun2,b , In-Bum Jeong 3,c , and Sung-Soo Kim 4,d 1-3 R&D Center, Changsung Corporation, 11-9, Namdong Industrial Area, Namdong-ku, Incheon, Korea 4 Department of Materials Engineering, Chungbuk National University, heungduk-ku, Gaesin-dong 12, Cheongju 361-763, Korea a kslee121@changsung.com, b ycyun@changsung.com, c ibjeong@changsung.com, d sskim@chungbuk.ac.kr Keywords: magnetic composite, absorber, reflection loss, permeability, permittivity, flake Abstract.
The frequency profile of complex permeability (μr) and permittivity (εr) and their relationship with microwave absorbing properties are investigated in soft magnetic metal-polymer composite materials.
Thin flake Fe-Si-Al particles were prepared by mechanical forging of spherical powders using an attrition mill.
It is evident that the permittivity of magnetic composite was strongly affected by the thickness of flaky powder and aspect ratio variation as shown in figures 3 and 4.
This is believed that the decrease of the permittivity and density of the flexible sheets manufactured in calendaring process may be factors responsible for the shift to high frequency of maximum reflection loss peak.

Introduction The hexapod parallel mechanisms of simulators is a simulation device which is characteristic of instantaneous overload and innervations from six degrees of freedom for the operator to make maneuvers including the pitch, the roll, the yaw, the vertical, the longitudinal and the lateral directions, whose dynamic and static response performance is one of the key factors affecting the simulator’s innervations fidelity.
The update laws to tune the unknown parametersin (2) are given as: (4) Where is a positive diagonal adaptation matrix which composes of weight factors of each degree of freedom.
By utilizing the structure property of the hexapod parallel mechanisms model [8, 9]: .
“Present State and Perspectives of Research on Kinematics and Dynamics of Parallel Manipulator”, Chinese Journal of Mechanical Engineering. vol. 17, no.9, pp.979-984.
“Coupling Analysis Based on Joint-Space Model of Parallel Robot”, Chinese Journal of Mechanical Engineering. vol. 42, no. 6, pp.161-165.

Introduction Cavitation erosion is a major failure form of fluid machineries, which seriously affects the work reliability, efficiency and lifetime.
Scientists has done a lot of works with regard to cavitation erosion mechanism[1], analysis of cavitation flow field[2], cavitation-erosion resistance of materials[3], cavitation erosion factors[4], and bubble dynamics[5], etc.
The magnetostriction apparatus is widely used as an important measure to determine the cavitation-erosion resistance properties of materials and explore the cavitation erosion mechanism.
To resolve the problem, considering the vibration with a very small amplitude, a spring-base smoothing method for all cell types with the spring constant factor of 0 was employed to update the grids in this case.
Yu, Journal of Mechanical Engineering. 47 (2011) 167-173.

The choice of material properties: the modulus of stone is 5.0Gpa and Poisson's ratio is 0.27; the modulus of filler is 1.25Gpa and Poisson's ratio is 0.3 [4,5].
The key indicator of structural dynamic properties is the size of its fundamental frequency.
This effect may be largely due to the suspension line structure and the suspension line arch provides a greater role in the mechanical properties of stiffness.At the same time I found higher stiffness of the basis due to the bridge is located in the rocks, Consolidation is better than the bridges of other regions located in Shaoxing where the mud presences.
At the top of arch Because there are many stone falls from the upper of arch, affecting the stiffness of the parts of the structure.
Remaining static mechanical properties and stability of the ancient bridge structure inYUqing.

It is the functional liquid material which exhibit normal liquid behavior coupled with magnetic properties.
Currently, viscosity characteristics of the ferrofluid reflect its rheological properties which are very useful and can be applied to many applications.
Researchers believe that the factors influencing the viscosity of ferrofluid are pH, surfactant, solid content, particle size and temperature.
Temperature model correlated with change of the behavior of ferrofluid was build and it was strongly shown that the temperature is one of the factors that change the viscosity.
In our opinion, thickness of the coating layer was increased with the increasing of oleic acid and for that reason the ferrofluid properties are affected.

Kinematic optimization of a new high-speed press using a GA-DE algorithm Xi-Yang Sun1,a, Shuan-Hu Wang2,b 1,2School of Mechanical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing, Jiangsu Province, China aSunyang.89@163.com, bshuanhuwang@tom.com Keywords: Kinematic optimization; High-speed press; GA-DE algorithm Abstract: The objective of this paper is to implement the optimal design of a high-speed press with a new transmission mechanism for punching.
Given this, the longer crank length is, the larger resisting arm affecting the transmission becomes.
Therefore, crank length, as one of important factors influencing motion property of high-speed press, is taken as the optimal object.