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Introduction It is well known that the mechanical properties of a granular material are governed by various factors such as the characteristics of its constituent particles and conditions of deposition.
Assemblies of circular particles were satisfactory for this purpose as they do exhibit most properties of granular materials qualitatively, such as strain softening, volume increase, and the transition to a critical state at a large strain.
On the other hand, their strength is low and their deformation properties are quantitatively far too different compared to real granular materials.
Influence of Particle Shape on Engineering Properties of Assemblies of Two-Dimensional Polygon-Shaped Particles, Géotechnique, 2002, 52 (3), 209-217
Initial Fabrics and Their Relations to Mechanical Properties of Granular Material, Soils and Foundations, 1972, 12, 1, 17-36

As a result, formation of surface layers with special properties for sliding friction assemblies, for example, journal bearings (JB), is the critical task at present.
The applied materials of anode and cathode, and their some physical and mechanical properties are mentioned in the Tables 1, 2.
Physical and mechanical properties of the materials, applied during electroerosion alloying as cathode (sample) Material grade (DIN) Crystal lattice Tensile strength under tension [Kg/mm] Yield point, [kg/mm2] Hardness, [HB] C 45 CBL (cement bond log) 96.8 84.6 280 41 Cr 4 CBL (cement bond log) 98 86 220 The majority of factors have impact on the quality characteristics during electroerosion alloying, of the list of which the alloying modes should be marked out.
Physical and mechanical properties of materials applied during electroerosion alloying as anode (alloying electrode) Material grade Melting temperature, [ºC] Hardness Thermal conductivity, [W/m K] Coefficient of thermal expansion 10-6 , [grad -1] copper 1084 88HB 401 16.5 silver 817 25HB 453 14.2 tin 232 5HB 59.8 22 indium 157 0.9HB 87 60.5 Fig. 1.
[5] D.N.Reshetov, Machine parts: Textbook for students of engineering and mechanical specialities, Machinebuilding, Moscow, 1989

The KPIs have five factors: Effective stroke ratio (ESR), Non-dimensional Load-carrying capacity (NLC), Effectiveness of energy absorption (EEA), Specific energy absorption capacity (SEA), Stableness of load-carrying capacity (SLC).
Many factors may affect the energy absorption behavior of tubular structures made from different materials or different configurations.
The solidity ratio (φ) is a dimensionless parameter indicating the geometric property of tubes of different configurations.
Slsobky, Further experimental investigation on the eccentricity factor in the progressive crushing of tubes.
Jones, Energy-absorbing effectiveness factor, Int.

The dynamic response of the clamped beam under low velocity impact Wengui.Long1,a, Zhuhua.Tan1,b, Yang.Liu1,c, Furui.Wang1,d 1State key laboratory of advanced design and manufacturing for vehicle body, College of mechanical and vehicle engineering, Hunan University, Hunan, 410082, China.
Jacob [3] conducted many experiments on clamped beams subjected to localized loading, study focuses on the final deformation affected by geometry of the beam.
However, theoretical analysis ignores these factors, and the theoretical model is based on the quasi-static loading condition. (2) The empirical equation about the dynamic yield stress may not apply.
It is found from the figure Fig. 8(a) that in the early-time elastic response, the variation of the stress indicates the dispersive property of the elastic flexural waves: the wave peak in the rear are more intense in magnitude than that at the front of the wave packet .
The dynamic response of the clamped beam is divided into four stages: elastic fluctuation, the overall structural response, unloading response and free vibration, plastic hinge forms in the overall structural response stage, the hinge also affects the variation of the stress, the stress displays a platform on the stress-time curve.

Artificial neural networks model was studied for simulating the property and function of human brain.
Table 1 Measured Data and the Rredictive Value of Neural Network Model Monitoring Time /day Real Settlement /mm Model Prediction /mm Error 0 0 28 -6.87 92 -26.62 183 -49.05 218 -54.30 243 -62.24 280 -68.66 309 -77.86 348 -85.84 375 -91.13 471 -112.30 559 -128.24 658 -146.73 -148.93 1.5 731 -160.70 -164.39 2.3 968 -200.26 -206.66 3.2 1108 -221.10 -225.74 2.1 1287 -245.19 -238.56 2.7 1443 -269.99 -260.27 3.6 Fig.5 Comparison diagram of real data and model prediction Conclusion Embankment settlement of expressway is essentially a nonlinear behavior, and it is affected by many factors.
Not only the external load and the natural environment has a great influence on the embankment deformation, but also the complex nature of the soil itself seriously affects the calculation of the authenticity of embankment settlement.
Beale, Design of neural networks, Beijing: Mechanical Industry Press, September 2002, pp.89–91

The observed adsorption sequence can be explained by the ionic properties of the metal ions.
Separation factors (α21) were calculated for all binary systems to evaluate BC/Fe3O4's selectivity towards heavy metals.
The obtained separation factors across all systems further confirmed the affinity sequence of the three metals for BC/Fe3O4 following the order Pb²⁺ ≫ Cu²⁺ > Cr³⁺.
This reduced effectiveness can be primarily attributed to two factors.
This hydrolysis affects the surface properties and binding sites of the material, potentially leading to the formation of more stable metal-surface complexes that are more difficult to desorb.

With the rapid development of China's industrial technology, Researching and developing the spring with independent intellectual property is imperative.
This disadvantage will affect the service life.In perpendicular direction of the shear direction, Exerting pressure F，Then do the shear stiffness test，In the shear direction，Exerting pressure and measuring deformation.
References [1] Hesheng Zuo .Mechanical impedance method and application[M]Beijing：Mechanical industry press .1987
The resonant vibration of mechanical theory and application .
Mechanical vibration study[M] Shanghai Jiaotong University Press. 1985.3

The pre-ECAP mechanical properties were 232 MPa tensile strength, 65% elongation, and Vickers hardness of 63 (load: 2.9 N).
After eight ECAP passages, the properties changed to 438 MPa, 28%, and 141, respectively.
The fatigue specimens were electrolytically polished (approximately ≈ 25 mm from the surface layer) prior to mechanical testing to remove any preparation-affected surface layer.
[5] P.Cavaliere, Fatigue properties and crack behavior of ultra-fine and nanocrystalline pure metals, Inter.
[11] N-A.Noda, M.Kagita, Variations of stress intensity factors of a semi-elliptical surface crack subjected to mode I, II, III loading, Inter.

This article introduces two kinds of frame structure system structure for steel structure and reinforced concrete structure, analyzes the similarities and differences in the structural properties, structural occupied area, time limit for a project, project cost and comprehensive economic benefits and other aspects.
Reinforced concrete structure makes reasonable use of two kinds of material mechanical properties for reinforcing steel bar and concrete, this application has a history of nearly 200 years [1-4].
Using different structural materials, the upper structure construction period has a greater impact, but also suffers from the influence of environmental and construction season, geological conditions and many other factors.
Moreover, structural material also affects on external wall maintenance cost, but the external costs of maintenance structure is considered to impact of overall cost in this project.
Conclusions This article introduces two kinds of frame structure system structure for steel structure and reinforced concrete structure, analyzes the similarities and differences in the structural properties, structural occupied area, time limit for a project, project cost and comprehensive economic benefits and other aspects.

Selected Properties of Bearings with Helical Groove on the Journal SEP Jaroslaw Rzeszow University of Technology Faculty of Mechanical Engineering and Aeronautics, W.
The paper presents results of tests concerning slide bearing with helical groove on the journal selected properties.
Change of the bearing journal design is one of the possibilities of destructive hard particles affect decrease.
Intensify of oil flow through bearing is a substantial factor of possible effect on easier contaminations removal from bearing and then wear decrease.
Sep, The oil film properties in journal bearings with non-typical geometry.