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Energy absorption Properties of Folded Honeycomb Structure Consisting of Corrugated Paperboard Funded by the National Natural Science Foundation of China (No 50905120).
China sxxawdm@sina.com 2 School of Mechanical and Electrical Engineering, Shenzhen Polytechnic, Shenzhen 518055, P.
The cushioning properties of the folded honeycomb structure can be changed by modifying the size and basis paper.
Effect of corrugated size on cushioning properties of folded honeycomb structure.
In order to find out the factors affecting the cushioning properties of the folded honeycomb structure, we considered the relative density of corrugated sandwiches which is correlated to the shape and size of corrugates.

Residual stress distribution on the surface of the workpiece often affect the fatigue strength.
So it is very important to study the distribution of surface residual stress that improve the fatigue property of the workpiece [1-3].
During the cutting, elastic plastic deformation occurs in the conditions of high temperature, high strain and high strain rate, it should be considered that the impact of various factors on the flow stress of the material.
The tissue layer is mainly caused by the mechanical stress elastic deformation.
Journal of Materials Processing Mechanical Technology. 62 (1996) 448~453 [5] S.

This technique requires geometry, properties and symmetric boundary conditions but don’t requires symmetry in application of assumed loads.
The two primary thermal mechanisms affecting the temperature of the clutch plates are heat generation (caused by the slipping that occurs during engagement and disengagement) and forced convective heat transfer [5].
Borozan, Automotive mechanical face seal – Tribological Simulation, Journal of the Balkan Tribological Association, 2011, pp 1-12, Vol. 17, No. 1, ISSN 1310-4772, www.scibulcom.net, Indexed in ISI Thompson Scientific Impact factor= 1.104 http://www.worldcat.org/title/automotive-mechanical-face-seals-tribological-simulation/oclc/721927839&referer=brief_results
Farkas, Calculation by Finite Element Method (FEM) of Temperature Distribution in the Components of a Mechanical Seal, Journal of the Balkan Tribological Association, 2011, pp 13-20, Vol. 17, No. 1, ISSN 1310-4772, www.scibulcom.net, Indexed in ISI Thompson Scientific Impact factor= 1.104 http://www.worldcat.org/title/automotive-mechanical-face-seals- tribological-simulation/oclc/721927839&referer=brief_results
Mayer, Mechanical Seals, ,Butterworth & Co Ltd., ISBN 0 408 00307 3, London 1977

It is therefore essential to improve the engineering properties of such problematic soil with suitable stabilization technique as and when encountered.
Therefore, it becomes vital to improve the engineering properties of weak subgrade soils before the beginning of road construction.
Moreover, for improving the engineering properties of soft soil, lime is considered as a benchmark stabilizer [4].
On the other hand lime treatment shows many advantageous effects on the engineering properties of clayey soils that included a reduction of swelling and shrinkage potential, workability improvement and an increment of mechanical strength [6].
This test also serves to quantify the effectiveness of stabilizer in improving the geotechnical properties of soil.

CRH3 type EMU operate on the Beijing-Tianjin high-speed line, because of its high speed, wheel load conditions change often, coupled with the track’s irregularity and other factors, so that the wheel is under a complex random loading, therefore, the analysis method study of the wheel’s fatigue strength is very important.
The model is based on ensuring the premise that the mechanical properties of original structure does not change, and the non-critical area characteristics can be ignored to simplify model, in order to improve the subsequent finite element post-processing and finite element analysis of solution efficiency.
In the stress - time history, the stress cycle can affect the fatigue life.
Distribution of wheel safety factor is shown in Figure 4.
Fatigue safety factor of the wheel is above 1.376, which can meet the requirements of the fatigue life.

Effect of the severe deformation by multi-pass rolling on microstructure and tensile properties was analyzed in terms of rolling temperature, plate thickness, and cooling rate for a modified API X65 steel containing B.
Results and Discussion Mechanical Properties.
Mechanical properties are presented in Table 2.
Mechanical Properties of an Alloy Containing Boron.
At present, howerver, since heat 1(WQ) may have a lower hardenability, as compared to heat 2(ACC) due to the difference in matrix composition according to unknown factors, it is impossible to directly compare these specimens in terms of cooling rate.

Elasto-Plastic analysis on Wellbore Stability under the Condition of Permeation Jianbing Sanga, Sufang Xingb, Chenhua Luc, Wenjia Wangd, Bo Liue* School of Mechanical Engineering, Hebei University of Technology, Tianjin, 300130, China asangjianbing@126.com, bsufangxing@sohu.com, cluchenhua0617@163.com, dikarugas@126.com, eliubo@hebut.edu.cn Keywords: wellbore stability, permeation, elasto-plastic analysis, SD effects Abstract.
Maintaining the wellbore stability is a key factor for oil and gas drilling operations.
Majority of rocks around wellbopre contain crevice fluid, which affect not only the mechanical properties of rocks but also the stability of wellbore.
Mechanical Model and Basic equation In initional condition, formation rocks are acted only by ground stress.
Fig1 is the mechanical model of well.

Because of its beautiful appearance, good physical and chemical properties, all-ceramic crown restorations are more widely used., However, due to the brittleness of ceramics and the stress mismatch between different materials, dropping or fracture phenomenon of porcelain veneer is often occurred in clinical application during the service period of all-ceramic crowns.
However, due to the brittle performance of ceramics, porcelain fracture and spalling fracture were often occurred and the use of all-ceramic restorations was greatly affected.
Meanwhile, the metal ions of the ceramic alloy not only make the porcelain prosthesis occurred fade, and some patients have metal allergies [3], the existence of these factors impels the development of the all-ceramic systems without metal basement structure.
However, the brittleness of the ceramic restoration is still the Achilles heel of restricting its application, greatly influence the reliability and stability of the material properties, also limit its features to play and practical application.
The main mechanical properties of all ceramic crown and crack germination, extension, penetrating and failure process was simulated in this paper and the results has important guiding significance for the clinical use of all-ceramic crown restoration.

Research on the engineering properties of fly ash as backfill Feng Wei1, a 1 Department of Construction Engineering, Yulin College, Yulin,Shanxi, 719000,China awl2582010@sohu.com Keywords: Fly Ash Material, Backfill,Laboratory Experiment, Loading test, Mix Proportion.
These aboved experiments can research  strength change of admixture, compressibility and strength properties under different mixture ratio and the effect of curing period on compressibility and strength properties.
Compressibility of the soil directly affected the settlement of earth structure.
Compressibility is one important engineering properties when fly ash are used into coal storage yard.
In order to study the foundation bearing capacity and compression properties of fly ash filler, loading test were carried out on the foundation of fly ash to acquire bearing capacity.

Due to their properties, the composite materials began to replace traditional materials (ferrous and non-ferrous) in a lot of industries leading out the development of new methods of machining or adaptation of the classic.
As a general definition, composite materials are a mixture of two or more different components whose properties complement each other, and the result is a material with superior properties to those specific to each component [2].
Due to several factors, various errors can occur, as shape errors and errors related to the hole size.
Through specific changes in the grain size of the carbide and the relationship between hard material and matrix component, hard metals with different properties can be produced.
Also here is explained how several factors, as drill geometries that are used currently in this domain, and coatings influences the drilling process.