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Mechanical properties of new cold-formed flange-closed welding section members WU Sheng1, a 1 College of Civil Engineering, Northeast Forestry University, China ajackiebessie@163.com Keywords: Hollow flange beam; Cold-formed steel members; Finite element analysis; Mechanical properties Abstract.
Being subjected to flexure and also being subjected to compression, combined compression and bending are suitable for the mechanical properties.
New kinds of cold-formed steel sections (a) HFB (b) HF1 (c) HF2 Fig.1 New cold-formed flange-closed welding sections After analysis the main factors that effect on the mechanical properties of the cold-formed steel members, the HFB section height ratio of triangular hollow flange to the total section (hs/h) has been suitably increased then the first kind of new cold-formed steel section, which is named as cold-formed triangular flange-closed welding section HF1 is formed, as Fig.1 (b) shows, the ratio of hs/h ranges from 1/6 to 1/2.
Mechanical properties comparisons The relationship curves of compression load to axial displacement (P-⊿) in the centroid of the moveable end of the three typical section members are shown in Fig.4.
The members show some mechanical properties in developing the compression ratio increase, such as flexural carrying capacity decrease, ductility reduction and ultimate curvature decrease.

Metal matrix composite has been developed to improve mechanical properties for the automotive component application.
One crucial factor in achieving excellent mechanical properties is improving the properties of the aluminum matrix of composite by the heat treatment process.
The test results show that the mechanical properties of aluminum matrix composite tend to increase after the heat treatment process.
These two particles will further increase the hardness of the composite.(12) The percentage of Fe and Mn element does not significantly affect the mechanical properties of aluminum composite matrix.
Effect of matrix strength on the mechanical properties of Al – Zn – Mg / SiC P composites. 2000;31:1139–45.

Hybridization of synthetic fiber and natural fiber is one of the potential strategies to enhance the mechanical properties as well as the degradability of such composite materials.
It was found that, the optimized factors that affects the coefficient of friction and wear is at load 30 N and sliding velocity of 52.36 m/s.
The generated equation models are bounded within the wear test control factors and ranges.
In addition, regression analysis was used to derive the mathematical models of the control factors and their interactions.
Pal, S.K., Mechanical properties of woven jute–glass hybrid-reinforced epoxy composite, J.

Mechanical properties are the most important characteristics of insulating materials, since they determine working ability of the whole construction.
Therefore, study of insulating materials mechanical properties is an urgent task.
Mechanical properties of RIN-insulation specimens obtained during tensile tests Specimen No.
This shows that this type of insulation is not affected by the temperature factor.
It has been established that the most preferred method for mechanical properties of RIN-insulation determining is static bending test.

Some researchers had proved that there are many factors affecting the PTC property of polymer-based composites.
These factors include the property and structure of polymer, the type, structure, morphology, surface property and concentration of fillers, and the distribution of fillers in polymer matrix [6-9].
The external electric field and magnetic field can change the structures of polymer and improve the dielectric and mechanical properties of polymer.
This will cause a decrease of PTC intensity and mechanical properties, an increase of brittleness and a deterioration of processability of composites.
The PTC composites with magnetic field treatment present good comprehensive properties

In view of this, it is very important to stabilize the pressure at the entrance, but pressure fluctuations arising from complex factors are difficult to solve one by one.
Low-frequency fluctuations caused by changes of the supply voltage, water pressure, atmospheric temperature and other external factors that are hours-periodic.
Of them the important factor is the solid broken.
In addition, parameters can not screw with the process parameters and material properties to adapt, for example, the starting point compression section is too short or melting occurs too late, etc., will have instantaneous flow of solid-phase plug.
In view of the pressure fluctuations in the extruder parts, superposition of several factors result from the effects.

The effect of the mechanical properties of Ti6Al4V on the onset of ASB is investigated based on the Johnson-Cook model.
The investigation reveals the main factors that affect the onset of ASB during the HSC process.
The temperature in the temperature term is affected by two major factors: (a) plastic deformation and heat transfer.
Table 1 Material properties of the JC model for Ti6Al4V [1].
Shastry, Material Factors in Adiabatic Shearing in Steels.

The paper deals with the tribological properties of investigated types of hard-faced materials under erosive wear conditions.
From achieved results concluded that inclination angle is one from determining factors on to material’s wear measure.
Nevertheless, the abrasion resistance of a hardfacing alloy depends on many other factors such as the type, shape and distribution of hard phases, as well as the toughness and strain hardening behavior of the matrix [3].
Their application allows the creation of suitable combination of surface layers and support components properties.
Dománková, Low-carbon sheet metals treated by nitrooxidation in fluid layer and their properties, Scientific Bulletin.

The present study investigates the effect of process parameters like tool rotational speed and tool feed on the mechanical and tribological properties of friction stir processed AZ31B magnesium alloy.
The experiments were conducted with 3 level 2 factors full factorial design with two replications.
However, the formability and the tribological properties of magnesium alloys are not significant [7, 8].
The responses were evaluated using ANOVA and the significant factor which affecting these properties were identified.
The experiments were conducted on the basis of 2 factors 3 levels full factorial design with two replications.

In order to intensively study the stability influencing factors of rockfill dam slope in tailing pond, it was simplified to the common rock slope.
Combining the two results through the above two methods, the main affecting factors of the rockfill dam slope’s stability are: rock density, slope angle and the angle of internal friction.
In this paper, RS theory and PCA method are combined to research main factors affecting rockfill dam slope’s stability, and provide the evidence for the stability evaluation and analysis.
Data collecting and processing According to the influence factors of slope stability, we collected 45 groups’ typical examples.
(2) For rockfill dam slopes’ stability influencing factors, rock density of is the largest one, so before choosing damming material we should test the stone material mechanical performance and then choose the density larger stone, such as: granite, syenite, gabbro, diorite, etc.