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In the process of tunnel construction, surrounding rock stress will redistribute, the vault and the two groups will generate displacement gradually over time, and displacement is a function of time, so the displacement at different time form a time series, but the time series is influenced by various factors on site, thus, it is not an equal interval series, use the previously described treatment methods: changing interval into equal interval time series, and handle the abnormal values, after these processes, you can form a distance time series: (3) Where: are the parameters of affecting the law of the vault and two groups’ displacement, expresses time.
If All the parameters and functions which affect the law of the vault and two groups displacement can be found, then the function can be directly used on the displacement time series prediction of the tunnel vault and two groups, however, the factors affecting the displacement of the tunnel crown and two groups can not accurately determined, and this function does not exist an explicit expression.
The good property of neural network can approximate any non-linear systems in any precision, which can effectively simulate the displacement timing changes of the tunnel crown and two groups.
There are so many factors influencing crown subsidence and the convergence of two groups, mainly containing depth, rock type, rock mechanical properties, surrounding rock structure, tectonic stress, time and forms of initial support, tunnel boring method, and so on.
Many factors are difficult to accurately measure, so it should not be directly as the input of neural network.

Properties of steel welded structures depend on many factors such as welding technology, filler materials, and state of stress.
Chemical composition of metal weld deposit could be regarded as a very important factor influencing properties of weld metal deposit (WMD).
In typical low alloy steel weld structure the best mechanical properties correspond with maximal amount of acicular ferrite (AF) in weld metal deposit (WMD) and minimal amount of MAC phases (self-tempered martensite, retained austenite, carbide).
Dobrzanski, Structure and mechanical properties of gradient coatings deposited by PVD techniques onto the X40CrMoV5-1 steel substrate, Journal of Materials Science 43 (2008) 4300-4307
Tański, J Domagala-Dubiel, Unique properties, development perspectives and expected applications of laser treated casting magnesium alloys, Archives Of Civil And Mechanical Engineering 12/3 (2012) 318-326

Repeatability versus accuracy Input and Output of the Problem In this paper, the two input parameters affecting the dynamic behavior of the robot are link length and link mass.
These two variables can be used by robot controller to affect its locomotion.
It should be noted that length and mass are for properties of each link where as α0 and s are used for the entire robot.
The x-axis of these two figures represents the 5 levels for each of the four input factors.
Seireg: Journal of Mechanical Design (1990), p. 501

The dynamic properties of ball screw feed system can be predicted at the design stage by establishment of dynamics model and dynamic analysis carried out by simulation results.
Literature [3] analyzed the composite stiffness of CNC machine tools, made the theoretical calculation of the errors caused by stiffness, and proposed measures for improvement, but the influence of stiffness on dynamic and static properties of system is not researched in depth.
Ignore the influence of non-linear factors such as clearance and friction on system performance.
Model description of the system does not take into account nonlinear friction factors, with certain limitations, and the higher plus can easily lead to system instability [9].
Therefore, the next focus of the study is how to establish a comprehensive mathematical model accurately of mechanical transmission components including friction, reverse gap and other non-linear factors, and conduct further study of error compensation.

The impact can be direct or indirect via punch wear. [4] Geometry and quality characteristics of a fine blanked part depend on a variety of influencing factors.
One of those material properties is micro hardness.
Especially the steel temperature during a forming process is crucial for the mechanical properties of the steel [14].
In: Materials Science Forum Vol. 818 (2015), pp. 264-267 [8] Bubphachot, B.: Microstructure affecting cutting quality in fine blanking process.
Doctoral thesis, RWTH Aachen University, 2002 [14] Merklein, M., Lechler, J.: Investigation of the thermo-mechanical properties of hot stamping steels.

All these three factors determine the material removal rate in the grinding process.
The lubricating properties of fluid affect the surface roughness directly.
The fluid’s physical and chemical properties will be studied to explain the different performances.
As a semi-synthetic fluid, TRIM® SC520 has similar properties to TRIM® C270.
Its viscosity is less than soluble oil, providing better settling and cleaning properties.

Rheological Properties of Hydroxyapatite Synthesized Clamshell mix with Palm Stearin Binder System Istikamah Subuki1, a, Nurul Huda M.
Some of the critical issues by such process are inhomogeneity of the powder mixture which originated from many factors, such as powder shape and size, fraction and binder selection [8].
The desired rheological properties include low viscosity, low activation energy, consistent flow index and low yielding stress [11].
Owing to high viscosity for the synthesized HAp, mainly originated from the bimodal powder system, greater heat input was desired to get the optimum rheological properties.
Sapra: National Conference on Advancements and Futuristic Trends in Mechanical and Material Engineering (2010)

Thus, the tribological properties of self-lubricating spherical plain bearing are the key factors affecting its life and performance.
Table1 The material properties of different spherical plain bearings Numbering Material of inner ring Material of outer ring bearing liner Bonding glue GCr15 20steel PTFE fibre woven AB brand glue GCr15 GCr15 PTFE fibre woven 801 brand glue GCr15 GCr15 PTFE fibre woven AB brand glue Test apparatus.
In order to reveal the differences of friction and wear properties among the three kinds of bearings with PTFE woven liners under the same conditions, SEM of frictional surfaces of three kinds of spherical plain bearings with PTFE woven liner are compared.
Conclusions Under the experimental conditions, the bearing I shows good tribological properties at the higher load (load ≥ 6kN) and suitable working in this condition, and the bearing Ⅱshows better performance, stability and good wear resistance but the anti wear property of bearing Ⅱ is little worse than that of bearings I.
He, in: Mechanical Engineering Material Data Sheets(Mechanical Industry Press, Beijing 1994)

The characteristics of drying shrinkage and creep tend to be the same as each other and are affected by environmental factors such as curing temperatures, relative humidity, and member sizes and internal factors such as water-binding material ratios, unit cement quantities, the types of binding materials, and the sizes and types of aggregates.
The used LSP affected reduction in hydration heat as well as with increasing compressive strength at early age.
The fly ash used was modified one with increased fineness through mechanical grinding for correction of initial compressive strength.
In general, factors that affect creep can be regarded to include intrinsic factors such as cement paste structures and concrete mix details and external factors such as load stress that acts as external force and stress/strength ratios.
Hou, Effects of Fly Ash on the Properties of Environmentally Friendly Dam Concrete, Fuel. 86(7) (2007) 1208-1211

But the mechanical properties of this material are low, that affecting a wide range of application of the material, so it is imminent to study the material strengthen research.
A large number of closed holes generate when foam mixed in AMP and cement slurry, while the three main factors to affect the material properties of pore structure are hole shape, porosity and pore size distribution.
(1) To improve the early strength of the material, on the one hand, through physical or chemical methods to improve the activity of the AMP, or adding chemical admixtures with early strength properties, on the other hand, we can improve the conservation conditions.