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The numerical results of stress are different in different position, if the local stress and the stress focus because of sharp corner, eyelet, attachment, weld heat-affected zone exceed a certain value and reach the numerical that could generating the crack.
The establishment of the model and the preliminary check Material characteristics of the drum According to the system design requirements, material of the drum is 16Mn steel, its mechanical properties and fatigue properties refer to literature .
Overall consider the drum’s stress concentration, stress gradient, size effect and the purity and uniformity of material, we must import such factors as follows in the fatigue analysis: 1)Aimed at the phenomena of stress concentration because of the part geometry, we introduce stress concentration factor; 2)Based on the sectional dimension and section form, we introduce the size factor ε; 3)Based on the surface processing of part, we introduce surface coefficient β.
Because in the real working condition, The level affecting the drum’s life is often change, it is necessary to study the drum’s fatigue life, damage and sensitivity that factor of safety at critical region.
Conclusion 1) Before fatigue analysis, by means of finite element method to determine the dangerous points of parts, can reduce the blindness of fatigue analysis, and greatly improve the efficiency of fatigue analysis. we get the weak parts that prone to fatigue fracture distribute the lateral section near the drum’s hub bore,and fatigue life is cycles. 2)Use Ansys to analysis structural static mechanics and fatigue, the drum’s hazardous location, and study the drum’s fatigue life,damage or factor of safety, and the changing load’s susceptibility in critical region of the three factors. 3) Fatigue sensitivity analysis shows: on the basis of the current condition, the decrease of load have good inhibiting effect on the drum’ fatigue damage, and have positive effect.

It could be seen that the geometrical dimension has little effect on the fatigue life of Cu foil for two different thicknesses (t=100, 150 mm), and the grain size became the main factor affecting the fatigue properties of Cu foil.
This caused the different fatigue properties.
Zagar, Characterization of mechanical and thermal properties of thin Cu foils and wires, Sensor Actuat A-Phys. 99 (2002) 172-182
Weiss, A study of the mechanical and fatigue properties of metallic microwires, Fatigue Fract.
Weiss, Size dependency of mechanical properties of high purity aluminum foils, Mater.

In this study, we overviewed several possible factors on the springback with finite element modeling of a simple V-die bending operation, highlighting the effect of the material variables on the final shape.
The basic mechanical properties, which served as input parameters for the yield surface and the isotropic hardening definition were obtained by uniaxial tensile tests.
The basic material properties of the applied steels Y [MPa] UTS [MPa] Ag [%] A80 [%] r0 r45 r90 DP600 444 656 12.8 20.6 0.803 0.910 1.010 DP800 570 879 10.2 16.0 0.654 0.786 0.767 DP1000 758 1099 6.7 10.6 0.752 0.730 0.811 The kinematic hardening parameters were defined by cyclic tension-compression tests, in connection with which, the authors refer their own work.
The impact of the parameters, which affect the change of the Young modulus are similar, and a little stronger effect can be realized by the Young’s reduction factor.
Archives of Civil and Mechanical Engineering, VIII (2008) 103-117

Introduction Poly(vinylidene fluoride) (PVDF) is a chemically stable piezoelectric polymer with particularly excellent electrical properties such as ferro-, piezo-, and pyro-electricity[1].
As a matter of fact, the morphology of the electrospun polymer fibers depends on many parameters, such as solution properties, processing conditions, and ambient conditions.
However, solution properties are one of the most important parameters in electrospinning techniques.
However, the diameter distribution was affected by varied voltages.
The possible mechanism for the formation of β-phase PVDF produced by electrospinning might be attributed to several factors.

Mechanical Properties and Crack Propagation.
It is necessary to discuss the factors affecting the Young modulus, the bending strength, the fracture toughness and the fracture work qualitatively.
Lina, Structure and mechanical properties of selected biological materials, J.
Rouxel, Tape casting of Al2O3/ZrO2 laminates: Processing and Mechanical Properties , J.
Zheng, K.H Zhu, Analysis of mechanical properties and SEM for laminated SiC/W composites.

The gas pressure in rock mass and its changes in time and space are one of the basic factors affecting gas recovery and rock failure.
In addition, from Fig.3, it can be seen that although the hydro-mechanical properties of the model are heterogeneous, initial deformation of the rock specimen is elastic and gas flow takes place along tortuous paths defined by the locations of the most permeable elements.
The modelling of progressive failure and associated fluid flow in rock samples with different homogeneity indices were carried out to investigate the hydro-mechanical response including the axial stress-axial strain and permeability evolution, fracture patterns, and flow vectors in rock samples at the scale of usual laboratory samples and gain a better understanding of the factors that control the behavior of gas flow in rocks or rock masses.
In addition, heterogeneity plays an important role in affecting the evolution of permeability in rock.
This evolution generates discrete structures that characterize the overall macroscopic mechanical response and transport properties at the scale of the overall model.

Analysis shows that use Solid65 element can simulate the nonlinear mechanical properties of the reinforced concrete beam under different reinforcement ratio better.
So we think that the finite element software can be used to calculate the mechanical behavior of the reinforced concrete.
According to the existing regulations, although it can satisfy the requirement of the use and the security, sometimes it considers the economic factors less, causing a waste of materials.
So, if we can simulate the mechanical characteristics of the reinforced concrete structures by finite element software, it will help us to optimized the design and save more money.
Considering the number of elements will affect the calculation speed and convergence, we will reduce the unit quantity and speed up the calculation by the symmetry of structure modeling.

Mechanical properties of the test steel in longitudinal direction (ultimate and proof stress, specific elongation, reduction in area, impact toughness, hardness) were also determined.
Mechanical properties of heat-treated steels of 30KhM type.
Nishimura, Factors affecting surface roughness of low carbon resulfurized free cutting steel, JFE Technical Report. 23 (2018) 43–48
Han, Microstructure and Properties of Graphitized Free-Cutting Steel, Russ.
Composition, Inclusions, Properties, SUSU Publ., Chelyabinsk, 2005.

Effects of Antibacterial Treatment Temperature on the Properties of Copper-Bearing Antibacterial Duplex Stainless Steels Hongliang Xianga, Jinchun Fanb Dong Liuc, and Peipei Guod School of Mechanical Engineering of Fuzhou University, Fuzhou 350108 PR.
However, antibacterial heat treatment would affect other properties of materials.
The aitibacterial properties were studied by film-cover method.
The two factors play opposite role in the formation and stability of passivation film on the surface of stainless steel and the corrosion resistance depends on which is the main factor.
The formation mechanism of the pits could be realted to the erosive properties of Cl-.

Finally, relations between length and width of fibres and shape factors were calculated.
A high shape factor means straight fibres and gives in most cases good mechanical properties in the sheet.
However, significant influence on properties of pulp and paper can have the lower length and width of fibres.
Teischinger, Indented rings (hazel growth) of Norway spruce reduce anisotropy of mechanical properties, Wood Science & Technology, 46 (2012) 1239-1246
Variation in the pulping properties of Sitka spruce (Picea sitchensis), Holzforschung 20 (1966) 155