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Temperature and moisture substantially affect the water elimination procedure, occurring in the drying stage, of ceramic blocks used in building construction.
The following conditions are associated with the model: · Constant thermo-physical properties; · No internal source of energy; · Homogeneous and isotropic body; · Uniform properties at the beginning of the drying process; · 3-D axial symmetry around the center; · Convective boundary conditions on the body surface; · No volume variation throughout the process; The general differential equation that describes the diffusion in the body shown in Fig. 1, with dimensions 2R1 x 2R2 x 2R3, is: (1) where is the nabla operator.
The main properties needed for the simulation were presented by Pereira et al [11] and shown in Table 1.
In order to attend these conditions, several factors, such as drying velocity, air temperature, atmosphere relative humidity, area/volume ratio of the block and material porosity should be controlled.
· In spite of considering the same heat transfer coefficient for all faces of the block, a control of the thermal properties and drying parameters was successful in achieving a ceramic product with required quality

A two-story frame column longitudinal reinforced HRB400, three-tier framework of beam longitudinal reinforcement HRB335, the stirrups HPB235 reinforced productions, the average mechanical properties of the reinforcement is shown in Table 1.
The model cell size is 0.03 m .for the element shape all hexahedral size model unit deformation of the cell, affect the calculation accuracy.
Fig.5 Geometry plastic-strain chart of frame body Comparison of ductility factor results between the simulation results and the tests is shown in Table 2.
Table 2 Comparison of ductility coefficient results Results Displacement ductility factor Mean of Displacement ductility factor Comparison of results (simulated value / experimental value) Forward Reverse Mean The test results Forward 3.29 3.89 0.824 0.855 0.843 Reverse 4.49 The simulation results Forward 2.71 3.28 Reverse 3.84 Conclusion It’s possible for simulation the reinforced concrete frame structure with specially-shaped columns by ANSYS10.0.

Nesquehonite whiskers can not only be used for preparation of high purity magnesium oxide, magnesium hydroxide, basic magnesium carbonate, magnesium sulfate, magnesium nitrate and other magnesium salt products, but also they can be directly used in enhancing and modifying plastics, rubber, coatings and inks, etc. because of their good mechanical properties.
With special physical and chemical properties and practical applications, nesquehonite whiskers have attracted wide interest of researchers [1-4].
In this paper, low-temperature aqueous solution method was used and through strictly controlling the reaction temperature, reaction time, surfactants and other main factors, the optimal synthesis conditions of high aspect ratios nesquehonite whiskers were explored.
Taking whisker morphology, reaction yield and other factors together into account, high aspect ratios whisker can be obtained when the reaction temperature range was controlled at 45 – 50°C.
The results (Fig. 4) showed that when reaction time reached 50 min, the whisker formed a better morphology (Fig. 5), but taking yields and other factors into account, the reaction time should be more than 60 min.

Glass fiber is an excellent-performance material, and has good insulation property, heat resistance and high mechanical strength.
Therefore, this study uses carbon fiber and glass fiber as reinforcing materials into PU foam solvent, intended to improve acoustic absorbing, thermal insulating and mechanical property of PU composite board via additions of reinforcing fibers.
Burst strength, acoustic absorption, and thermal conductivity properties of organic/inorganic fiber-reinforced PU composite foam boards were finally evaluated.
Although reinforcing fibers affect the nucleation of PU composite foam, acoustic absorption property cannot be influenced.
This is due to two factors.

Introduction Temperature non-uniformity distribution is a typical operating environment of the aero-engine rotor and such complex temperature environment would change the related material properties [1].
The above factors could affect the engine dynamic performance and breeding failure.
For the engine shaft also with complex properties, such as inertia, elasticity, heat scalability, and these properties are all affected by temperature environment obviously.
The complexity non-uniform distribution of the temperature field and the fast time-varying characteristics would change the properties of the shaft; thereby change the natural frequency of main rotor system.
Thus the complexity of the temperature environment is an important influencing factor of the failure and devastating accident of engine main rotor system, also as one of the worthy research problems in rotor dynamics and mechanical design [4-6].

The reclaimed sand can be obtained by the process of high-temperature baking followed by mechanical reclamation and separation of micro-powder.
Sand preparation, reclamation process and properties determinations were all conducted in laboratory.
At last, different types of chemical bonded sand were prepared using this reclaimed sand and detected their related properties.
Different types of reclaimed sand were obtained by the reclamation process of high-temperature baking followed by mechanical reclamation.
This factor maybe increase the acid demand value of reclaimed sand, and also the increased acid demand value maybe affect the technological properties of reclaimed sand.

Topology Optimization Of QY70G Truck Crane Turntable Structure Ye FEI1a,WANG Xingkun2b,Wenmin LIU3c School of Traffic and Mechanical Engineering,Shenyang Jianzhu University,Shenyang,China,110168 a feiye0@sina.com, b 916890480@qq.com, c levinlwm@163.com@qq.com Keywords : Truck Crane; Turntable ;HyperWorks ;Topology Optimization Abstract: Turntable is the main bearing component of truck crane, its structural-load-carrying capacity influences the operational capability directly.
Turntable is one of the important components of truck crane，it bears hoist boom, lifting, luffing mechanism and bob-weight and so on, it is the transfer center of truck crane when it works, the structure will directly affect the lifting performance of the machine.
But, the rotary table structure design is affected by the vehicle shape size and installation and space layout.
The topology optimization method for structure The common structural topology optimization methods have based structure method, homogenization method, variable density method, among them the variable density method takes variable material with its density value between 0 and 1 as structural optimization area, artificially assume the relationship between density and properties (such as allowable stress and elastic modulus) of the designed material, make the density of each unit as design variable, specify the density of each unit is the same, change the solution of structural topology into material density distribution.
The first order buckling mode of turntable factor is 2.186, the structure load as the basic arm under rated load 700000N, on the basis of buckling theory, The buckling critical load of structure=Buckling load factor X structure, therefore, the critical load simulator optimized for 1530200N, the turntable structure is stable. 3.3 Model comparison before and after optimization In contrast to the structure by finite element analysis table before and after the optimization, figure 5 gives only the comparison of the maximum stress before and after optimization of the basic arm turntable under other conditions, the results in table 3.

Introduction Metallic foams (cellular materials) and honeycombs are widely used due to their attractive mechanical and thermal properties.
It is also known that age of the foams can affect its thermal properties.
Their geometrical properties are listed in Table 1.
Geometrical properties of honeycomb structures.
By decreasing the intercellular wall thickness by factor 2 (decrease in relative density by 50 %) the heat transfer through the cellular structure is not significantly affected.

Overheating is one of the main factors in the reduction in braking efficiency of tribo-contact.
High temperature loading not only affecting brake pad material, thermal stresses also causing cracking disc material, simultaneously [7].
Therefore, the structure of the material has a great influence on the physical and mechanical properties.
Table 2 demonstrates the material properties which is used in modelling.
Investigation of microstructure and mechanical properties of nano MgO reinforced Al composites manufactured by stir casting and powder metallurgy methods: A comparative study.

In filled composites, three types of influence of interfacial interactions on properties are determined: surface, bulk and diffusion [6].
In this case, the main factors of this influence are the total number of surface-active centers and their acid-base ratio, which characterizes the overall acidic, alkaline or neutral nature of the filler surface.
Calculations showed a significant influence of the energy properties of fillers on the FSE of epoxy composites ED-20+DETA+filler.
Therefore, the value of γds can be a reflection of some properties of polymer composites.
Lebedev and others, Physic-mechanical properties of composites based on secondary polypropylene and dispersed of plant waste.