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Based on the analysis to the factor influencing the cost of heat medium transportation system, the mathematical model to optimize the heat medium transportation velocity is constructed.
Introduction The value of the heat medium transportation velocity not only affects the heat loss of the heat pipe surface and the mechanical transportation energy consumption, but also affects the initial investment of pipeline system.
In the process of design, the heat medium velocity will directly affect the total loss cost of the heat medium transportation system.
Beijing: Mechanical Industry Press, 1994
Thermodynamic Properties of Water and Steam charts [M].

Mechanical Properties on the Welded Connection of Pipe and Hollow Spheres Joints Yajie Yan1, a, Honggang Lei1, b, Xue Yang2, c 1Taiyuan University of Technology, College of Architecture and civil engineering, 030024, China 2Shandong Yingcai University, College of Architecture and engineering, 250104, China atylaoxi@163.com, blhgang168@126.com, cyangxue-123321@163.com Keywords: Steel Pipe; Hollow Sphere; Welded Connection; Mechanical Property Abstract.
Introduction Steel pipe as a reasonable force component, widely used in mechanical, civil engineering.
Third different matching pipe - sphere of stress concentration The formula of computing bearing capacity of hollow sphere joints at Shell procedures and other literature used , we can see by the expression that ratio of pipe diameter and sphere diameter d / D is one of the important factors of bearing capacity of hollow sphere joints.
By analyzing the stress distribution of pipe-sphere joint in diameter d, sphere diameter D, pipe thickness t, hollow sphere thickness T under the action of individual factors, stress concentration factor results in Table 3, the rules show as follow: (1) As d increases, the stress concentration factor was a decreasing tendency; (2) As D increases, the stress concentration factor was an increasing trend; (3) With t increasing, the stress concentration factor was an increasing trend; (4) As T increases, the stress concentration factor was an increasing trend.
In Chinese [6] Pei Xu, Yaguo Xue: Mechanical analysis and experimental research on large welded hollow spherical joints, Journal of Southeast University (Natural Science Edition), 1997, 103-108.

Due to a very complex character of operation and specific load, were tested in order to determine the dynamic properties by means of DMTA method, thus to determine the storage modulus E’ and the mechanical loss factor tgδ, responsible for dispersion of mechanical energy.
Due to a very complex character of operation and specific load, were tested in order to determine the dynamic properties by means of DMTA method, thus to determine the storage modulus E’ and the mechanical loss factor tgδ, responsible for dispersion of mechanical energy. , were then tested in order to determine the dynamic properties by means of DMTA method, thus to determine the storage modulus E’ and the mechanical loss factor tgδ, responsible for dispersion of mechanical energy.
Assessment of dynamic mechanical properties by means of DMTA method was carried out within the range of temperature from -50°C to 120°C, with the frequency of sinusoidal vibrations of 1 and 20 Hz, amplitude of 120um and the heating rate of 2°C/min.
The results of testing of dynamic mechanical properties for the samples not used in human body are presented in Fig. 3.
DMTA thermogram for SIMPLEX P not used in human body Use of polymethyl methacrylate in human body over a period of ca. 10 years causes insignificant changes in mechanical properties of PMMA (Fig. 4).

Study on Reconstruction Property of Revolved Surface based on B-spline Ruo-can Sun a, Dan Liub, Ji-qing Zhaoc, Ying-ping Qian, Guo-feng Yi The School of Mechanical Engineering of Hubei University of Technology, Wuhan a1026959107@qq.com, bwww10230@163.com, c763069615@qq.com, Keywords: B-spline, least squares, surface reconstruction, surface-point cloud deviation Abstract.
The factors affecting the accuracy of the surface reconstruction were discussed.
The paper focused on the selection of the section point cloud and the factors affecting surface reconstruction precision based on B-spline curve fitting theory [5].
Surface Reconstruction Factors Affecting the Accuracy of Surface Reconstruction.
The number of control points and order are two main factors affecting surface fitting accuracy when using B-spline surface reconstruction .

Another purpose of applying pressure is to produce a complete casting with the desired shape and improved mechanical properties.
This phenomenon enable increased in hardness value and better mechanical properties to be achieved.
Conclusion It is obvious from the results obtained that using fine sand grain for moulding and applying pressure affects the properties of lost foam casting.
It is found that applying pressure during solidification of Al-11Si cast alloy produced better mechanical properties of the alloy.
LEE2), Density and Mechanical Properties of Aluminum Lost Foam Casting by Pressurization during Solidification.

The mechanical properties of the cryogels have been investigated by dynamic mechanical measurements.
In conclusion, the biomaterial obtained provides good swelling properties, mechanical resistance and it is ideal for extended drug release implantable systems.
The mechanical properties of the pva biomaterial may be influenced by several factors.
These factors include: weight percentage of the respective components of the cryogel (water and pva); the number of freeze/thaw cycles; and the duration of the freeze cycle.
Conclusions In this study we developed a type of criogel based on polyvinyl alcohol and ketoprofen with good mechanical properties and hydration.

This paper analyzed the steel reinforced concrete members’ Torsion properties under combined force by method of the finite element analysis.
Considering the main affecting factors like compression ratio to reveal the SRC structures under the force of monotonic torque’s characteristics of the damage and capacity, etc.
When analysis concrete strength 's influence on reinforced concrete component limit supporting capacity ,ensure conditions ,such as axial compression ratio, the concrete strength, the component section size, Stirrup spacing and the vertical steel ratio and other factors unchanged, analysis the SRC through changing concretes strength rank to get component's ultimate torque.
To analysis with steel size as influencing factor, SRC-2, SRC-7, SRC-8 three specimen sizes are taken to be 100 × 100 × 6 × 8,150 × 100 × 6 × 9,200 × 100 × 5.5 × 8, axial compression ratio, concrete strength, reinforcement ratio and other factors remain unchanged.
Therefore, by increasing the rate of stirrup component can increase ductility, improve the steel reinforced concrete columns' seismic performance, and also can achieve the purpose of enhancing the mechanical properties.

The orthogonal table L9 (34) was used to array the factors.
Results and discussion Effect of Additives and Processing Conditions on the Rheological Properties The torque rheometer was used to study rheological properties as affected by additives and processing conditions.
Range analysis on equilibrium torque for PA/LCP blends Average for each levels Factors A/ % B /% C /℃ D /rpm k1 1.70 1.43 2.32 1.55 k2 1.76 2.02 1.90 2.03 k3 1.80 2.53 1.76 2.39 range analysis 0.10 1.1 0.56 0.84 As LCP content was the main factor influencing the equilibrium torque for the PA/LCP blends, the melt flow rate (MFR) was used to measure the flow properties affected by LCP content; the corresponding results are shown in Fig.1.
Melt flow rate (MFR) changes with content of LCP Conclusions The rheological properties and mechanical properties of PA66/LCP blends depend strongly on LCP content.
Cidade, PP/LCP Blends: Influence of the LCP Content on the Mechanical, Rheological and Morphological Properties, Materials Science Forum 455-456 (2004) 476-479

(a) beam RC1, RC2 (b)beam RC3, RC4 Fig. 3 Comparison of load-displacement curve between corroded beams and reinforced beams The mechanical properties of corroded reinforced concrete beam The properties of corroded steel bar.
With the increase of working time, the mechanical properties of reinforced concrete beam degenerate gradually, in these influence factors, the reinforcement corrosion is the main factor.
After steel corroded, it is material mechanical properties such as yield strength, ultimate strength and ultimate strain changes, and yield platform shorten until disappear.
The properties of aging concrete.
Un-carbonated concrete account for the most part in reinforced concrete beam, its material mechanical properties directly influences the bearing capacity of components.

Mechanical properties of the as-rolled sheets.
Figure 4 shows the mechanical properties of the as-rolled sheets.
Mechanical properties of the annealed sheet.
Figure 8 shows the mechanical properties of the annealed Mg-2.0Zn-0.8Gd alloy.
As discussed above, the annealing process has great influences on the microstructure and texture, which affect mechanical properties.