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Equilibrium State of Football Players Affected by Disturbance Chunping Dong Jilin Agricultural University, Changchun, Jilin 130118, China dcping1974@163.com Keywords: Mechanical Balance, Stability, Mechanical Interference Abstract.
The paper use bio-mechanical principles study human balance strategies, we will first discuss the stability of the human body measurement problems, and then discuss the footballer walking process disturbed the balance of input recovery strategy, and the results of this study provide enhancements for the body to balance the theoretical support.
Introduction With the bio-mechanical research continues to depth, the use of bio-mechanical principles study of human balance strategies for human balance enhancements for theoretical support, has gradually become a cutting-edge field of rehabilitation engineering and hotspots.
Although at this time the swing foot contact with the ground yet, but soon formed a new support, in this process, if the new legs and perfect function without outside factors interfere, will be able to walk smoothly into the next step, to achieve a stable and secure walking.
Moreover, the proportion of the energy absorbed by each joint with disturbance intensity variation and the ratio of the energy produced is not consistent, but the main show complementary properties.

Two heavy metals (Mn, Ni) were added in different amounts to find out the influence of dosage of heavy metal on the mechanical properties of the matrices and the leachability.
Increasing of addition of heavy metals led to decrease of mechanical properties of matrices.
The physical fixation is linked with the mechanical properties of matrix mainly with the compressive strength and the porosity.
Lorenzen, Factors affecting the immobilization of metals in geopolymerized fly ash, Metal.
Qu, Study on the factors of affecting the immobilization of heavy metals in fly ash-based geopolymers, Mat.

The mechanical properties of 3D braided composites are depended on many factors, such as braid forms, manufacturing, cut-edge conditions and fiber volume fraction etc. 3D braided composites have the complex braid configuration.
There are majority of domestic and foreign scholars to study the mechanical properties of 3D braided composites [1-7].
In the present study, the macroscopic tensile mechanical properties of 3D four-directional braided composites are studied by experimental method.
Some main parameters of mechanical properties are obtained.
The effective properties of the 30° braided composites affected by thickness are less than that of the 45° braided composites.

The research can provide some mechanical parameters basis to physical mechanics properties of sandstones.
Therefore, the studies on the physical and mechanical properties of rocks under the condition of water chemical environment and temperature effect are of great importance to know well the deformation and strength properties of rocks.
In the mechanical properties of rocks under the effect of water chemistry, many foreign and domestic scholars also have conducted studies.
Third, rock's strength damage is affected by many factors, and the rock the practical engineering is often under coupling action of many factors.
Determination of some thermo mechanical properties of Sirahama sandstone under subzero temperature condition [J].

One of the main aspects to be considered while optimizing the mechanical properties of CFRPs is the fiber-matrix-adhesion.
This is because the interface/interphase between fiber and matrix affects in large the properties of a composite material [3].
As discussed above, the adhesion between fiber and matrix is significant for the mechanical properties of the hybrid composite.
Fig. 5: Maximum bending stresses of composite samples The bending properties of the composite plates were also affected by the steel fiber integration.
Furthermore the amount of integrated steel fibers and the distance between fibers are major factors.

In the present paper, a theoretical model and an experimental investigation on the axial tensile properties of MFWT is presented.
Theoretical Mechanical Analysis Model of the Tubes Elastic Properties and Strength of Uniaxial Laminae.
Obviously, it is a structure of laminate, whose properties depend on the elastic properties and stacking sequence of uniaxial lamina.
This is a key factor which can inevitably affect the actual strength.
And other factors can also affect the strength in reality, such as the inter-woven filaments, the porosity, and so on.

FATIGUE PROPERTIES OF ALUMINIUM ALLOYS FOR UNIAXIAL CYCLIC LOADS Ewelina Böhm1,a*, Tadeusz Łagoda2,b 1Opole University of Technology, Faculty of Mechanical Engineering, Department of Mechanics and Machine Design, ul.
The load for which we are able to state for an individual cycle his properties as for example its amplitude is called cyclic.
Lately, a stronger interest in aluminum alloys for use in structures has grown, and therefore it is necessary to know the mechanical properties of aluminum alloys, including fatigue behavior [5,8].
The results of the cyclic tests have proved that the corroding atmosphere reduces the strength properties of aluminum.
The analysis of literature included many factors affecting the fatigue life of the aluminum.

Determination of the Y flaw shape factor.
Fractography at a sufficient magnifications (N= 5000-10000x) allows of determining the necessary features required by the quantification of their affect.
These properties are among the others the characteristic dimensions, e.g. the diameter of a circular or axis of an elliptical pore parallel and perpendicular to the direction of fracture, or.
Soc. for Test. and Mats., Philadelphia, (1997) [3] Advanced technical ceramics - Monolithic ceramics - Mechanical properties at room temperature, Part 6: Guidelines for fractographic investigation (CEN/TS 843-6:2004) [4] V.D.
Richerson: Modern ceramic engineering - Properties, processing and use in design Marcel Dekker Inc., New York (1992)

Introduction The durability of metallic structures depends on the presence of heterogeneity in the phase and chemical compositions of materials, the crystal cell orientation, the density of flaws, the structure of borders between phases, the presence of internal stresses and microplastic deformation zones and other factors.
On the other hand, in ferromagnetic materials, these factors exert a great influence on the formation of magnetic domains, thus affecting magnetic properties of materials [1].
This allows to apply magnetic parameters and properties for testing structures and designing memory deformation or strength gauges [2-7].
At heat treatment, the transformation of the structural phase composition changes magnetic and mechanical properties.
This arises from the redistribution, appearance or disappearance of phase components, which differ in their magnetic properties.

PPNC Nanocomposite Mechanical and Thermal Properties PPNC commonly demonstrate improved mechanical and materials properties, when it was compared to those of pristine polymer.
Further properties shall be highlighted here in terms of mechanical properties and thermal properties such as heat distortion temperature, thermal stability and fire retardancy.
Mechanical properties.
It was concluded that clay content is detected as the second significant factor to enhance the tensile and flexural properties.
However, clay type and maleated polypropylene (MAPP content are two non-significant factors found in this study except that MAPP content has greater influence on the impact properties of nanocomposites [9].