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Loading and Axial Deformation of Finite Element Analysis of Down-hole Strings used for Hydraulic fracturing Ding Feng 1,a, Ao Xiao 1,b, Zuo-jie Liao 1,c, Yu Xie 1,d, Chao Ruan 1,e, Jia-wei Wang 1,f 1School of Mechanical Engineering, Yangtze University, Jingzhou, Hubei, China, 434023 afengd0861@yahoo.com, bxiaoao4411@sina.com,c136827215@qq.com d360047329@qq.com, e364373174@qq.com, f wangjiawei1860@126.com Keywords: hydraulic fracturing; down-hole Strings; finite element analysis; fluid-solid coupling Abstract: The string is loaded by ground thermal stress, fluid squeeze pressure and gravity in horizontal wells in the process of fracturing.
Effects of fracturing strings are safe operation of important factors.
Fracturing fluid properties is defined according to the usual operation material attribute.
Parameters of total model are set as follow: casing, external diameter is 139.7,internal diameter is124.26,E is 210,Poisson ratio is 0.3, K-factor is 10;tubing, external diameter is 77.44,internal diameter is 62mm,E is 210,Poisson ratio is 0.3, K-factor is 10;fracturing fluid, density is 1040, viscosity factor is 3.93, flow coefficient is 0.5,K-factor is 10, entrance discharge is 2.4.
The string is affected by the formation temperature which is caused its temperature up.

The deformability of structures thus is evaluated by an elastic analysis of members treated as prismatic (ie. with constant cross-sectional properties).
A reduction factor 1α of 35% was found to be an effective tuning parameter for the deflection prediction as seen in Fig.6 to Fig.10.
A reduction factor 1β of 25% was found to be an effective tuning parameter for the deflection prediction as seen in Fig.6 to Fig.10.
Since eI is a function of the cube of the compression block thickness, a small error in the calculation of this dimension will significantly affect stiffness and deflection prediction.
The simple analytical equations greatly simplifies the analysis process since the entire load-deflection response is calculated based on basic linearized equations after determining the section properties that the designer would need to compute in practice anyway.

This article is in the current situation font design of the computer age, to explore how computer technology affects the font design.
We should stop and think about: In this era of technological innovation what is good font design, computer technology and how it affects the font design.
The impact of computer technology on handwriting Handwritten Fonts (Script) is characterized by well reflect the artificial handwritten marks, also can increase human touch works, and mechanical sensitivity and symbolic sense, as no decorative line body (Sans Serif Typefaces), unlike the previously mentioned too .
In the past a very long time due to limitations and other technical factors, a single letter in English with only a handwritten font, so the same letters appear in the same text is the same as Sneli Roundhand, Coronet, Mistral and so we compare familiar handwriting.
At the same time, also because of a computer handy copy function, making a lot of font design is copied tampered with, thus greatly violated the interests of the original designer, especially in China, font design property protection and other relevant laws and regulations are not perfect, thus reducing Font designers labor rate of return.

Many factors involved in libraries energy saving, such as air-conditioning systems, lighting systems and other electrical systems.
Lighting has become one of the main factors directly affect the efficiency, therefore, more and more attention aroused.
Design lighting environment based on the luminance of the light, taking the uniformity of the luminance, the degree of glare, the properties of color rendering and the sense of three-dimensional etc.
It can be seen that achieve 82.6% of the lighting energy saving effect, exclude lamp power factor can be achieved 30.3% of the lighting energy-saving effect.
Many factors involved in libraries energy saving, such as air-conditioning systems, lighting systems and other electrical systems.

It also provides the information about various mechanical properties.
Properties of Fiber Reinforced Concrete Apart from the factors that affect the properties of conventional concrete, fiber reinforced concrete is affected by following factors · Transfer of stress between matrix and fiber · Aspect ratio · Quantity of fiber · Orientation and distribution of fibers Transfer of stress between matrix and fiber: · Modulus of elasticity of matrix must be lower than that of fiber for efficient stress transfer
Vairagade et al (2015) states that the inclusion of steel fiber in the concrete mix leads to an improvement in mechanical properties and a better resistance to heating effects.
An important negative aspect to the synthetic fibers is that they will soften at elevated temperatures and melt at about 150- 160⁰C, thus losing all their mechanical properties.
Mechanical Properties The tensile strength of concrete improves by adding reinforcement fibers.

The ductile damage model parameters of the damage model described above have to be calibrated in order to be considered true material properties of the material under analysis.
The cell properties, , of both CA arrays were used to store the material information of interest throughout the analysis.
And the mechanical properties of the plate steel, in the rolling direction, are described in Table 2.
Mechanical properties of the plate steel
Based on above observations, it is suggested that the material parameter D, controls the load needed for fracture propagation and consequently crack arrest properties of the steel.

In the actual permanent magnet synchronous motor servo system, the load changes are a major factor that affects system performance.
Voltage equation is: (1) Flux equation is: (2) For surface PMSM, Ld=Lq=L,torque equation is: (3) Mechanical equation of motion is: (4) In the above equations, ud, uq, id, iq, Ld, Lq are the voltage and current of axis d and axis q. r is the stator resistance. np is the pole pairs of motor. ψf is the flux of permanent magnet and the stator cross chain.
Different m can get different dynamic properties

Meanwhile, for material processing characteristics, the main factor that affects the quality of materials processing is the change of the material internal stress, and such state characteristics of the material can be described as a point on the stress-strain-strain rate surface.
Mechanical Mechanism Modeling.
Simulation and Results Analysis For material processing characteristics, the main factor that affects the quality of materials processing is the changing of the material internal stress.
This material state property can be described as a point on the stress-strain-strain rate surface.
Using this property, making the deformation of material processing along the optimal curve, we can obtain well processing results.

The affecting of initial pH value on decolorization rate.
When pH of 3, higher H+ concentration cause a inhibition of hydroxyl radical generation, oxidative degradation affect the heterogeneous Fenton system, thereby affecting the decolorization rate.
The affecting of H2O2 dosage on decolorization rate.
The affecting of dye solution temperature on decolorization rate.
The affecting of reaction residence time on decolorization rate.

A central challenge in this field is the economic efficiency analysis which was identified as a main key factor for successful MID-Projects.
There are manifold mechanical and electrical functions which can be realized furthermore; optical, fluidal and thermal functions can also be integrated in one part.
Already during the system design relevant properties of the developing system are defined.
This is in particular necessary for complex products, whose concept is affected by the considered manufacturing technology, e.g. mechatronic integrated devices.
They are based on the technology property cards by Peitz [8].