Search results

For characterization of the mechanical properties of monolithic neat and filled polymers, the mixture prepared as described above (without blowing agents) was poured in plastic ampoules of ca. 14 mm diameter and 80 mm length.
Based on dimensional considerations, relations for mechanical properties of foams, expressed in terms of cell wall material characteristics and foam density, have been derived in [5].
Substantial improvement in foam properties was observed.
Tong, Surface-modifiers of clay on mechanical properties of rigid polyurethane foams/organoclay nanocomposites, J.
Skala: Mechanical Properties and Energy Absorption Characteristics of a Polyurethane Foam (Sandia National Laboratory Report SAND97-8490, 1997).

Introduction The Discrete Element Method (DEM) has become an effective means to investigate the behavior and mechanical properties of granular systems which is originally developed by Cundall and Strack in 1979 [1].
Fig. 1 The viscoelastic contact model and translation of contact force Parameter Optimization of Model We expect the model established above agree with the real lunar regolith in mechanical properties.
The simple variable method is used to analyze the impact of each parameter on the mechanical properties.
The viscoelastic contact model built for the lunar regolith is similar to the real one in mechanical properties, and the values of macro-parameters: cohesion(c) and friction angle(φ) lie in the range of real regolith. 2.
[6] Gromov, V.: Physical and Mechanical Properties of Lunar and Planetary Soils.

With the model, the law that illustrates the influence of sheet properties on the deformation procedure of drawing panels is get, and the criterion for selection of panel material is provided for production.
In contrast with shallow drawing, depth of drawing is greater than 20mm or the total deformation is above 15% in deep drawing, and factors which impact the formability of deep drawing parts mainly are hardening exponent n, planar anisotropy r and yield strength σs of blank.
The material of parts is ST14 cold-rolled sheet steel and its properties are illustrated in table 1 [7].
（a）Shallow drawing part （b）Deep drawing part （c）Bulging-deep drawing part Fig. 1 Typical drawing parts Table 1 Mechanical properties of sheet ST14 Thickness t ［mm］ Young’s Modulus E ［GPa］ Poisson Ratio ν Yield Strength σs ［MPa］ Elongation δ［%］ 1.00 207.00 0.28 162.00 52.10 FEM Model.
Besides mentioned above, the curved surfaces that describe the relation between forming safety margin and blank properties approximate largely under different yield strength σs.

It also shows that first the HPMC-additive compatibility seems to be an interesting factor behind the variation of surface properties of HPMC formulated films, and second that formulation is an effective way to tune surface properties of HPMC biopolymer films.
HPMC films must be optimized to achieve the desired properties (in terms of moisture content, barrier properties, mechanical and surface characteristics …).
Determination of nano-adhesion properties of HPMC – PEG films.
In the present case, it is considered that the factors responsible for adhesion are the distance between AFM tip and sample surface, and the hydrophilic/hydrophobic character of surface.
Determination of nano-friction properties of HPMC-PEG films.

Finite element analysis of the mechanical behaviour of the different cemented hip femoral prostheses M.
Some studies have analysed factors like stem geometry, cement material, surgical techniques, which may directly or indirectly influence the performance of the cemented arthroplasty [1].
The material properties adopted were specified in terms of Young’s modulus and Poisson’s ratio for the implants and all associated components (Table 1).
Material properties used for the Table 2.
The obtained results lead to the following conclusions: - The stress values in the cement and the bone femur are affected by the material, design and shape of the femoral stem.

The determination of evaluation index system The main factors that could affect the performance of candidate leading product are selected as the evaluation index.
In the process of evaluation, the complicated factors of mutual restriction are hierarchical and disorganized, and the effect degree is distinguished according to the evaluation result.
The factors of qualitative evaluation are made quantitative processing, and then the evaluation system is formed.
The mechanical index contains the compressive strength and softening coefficient.
Research of test technology on energy-saving property of wall material [J].

To take further research on mechanical properties and behavior of this type of structure, the proposed preliminary design of a cable-stayed suspension bridge with a main span of 1800m is analyzed.
These factors make the structure competitive for the extra long-span bridge design [4, 5].
Study the effect of structural parameters on structural static and dynamic properties As a composite structure, all the structural parameters of the cable-stayed bridge and suspension bridge may affect the static and dynamic properties of this structure.
The rational value of suspension-to-span ratio can be obtained based on all the factors taken into consideration, which include the layout of structure, mechanical properties, economic efficiency etc.
To select a suspension-to-span ratio, the following factors should be taken into account: the layout of the structure, mechanical behaviors, economic efficiency, etc.

Thus the weld metal, which is intended to give acceptable properties with a slow cooling rate, may not be suitable at the HAZ for the faster cooling weld.
The chemical compositions and mechanical properties of this material are depicted in table 1 and 2.
Mechanical properties of S460G2+M steel [21] HSLA S460G2+M Thickness, t t<16 Yield strength (Ys) 460 MPa(min) Ultimate Tensile Strength (UTS) 540-700 MPa Ys/UTS Max.0.93 CVN (- 40°c) >60J transverse Elongation. % 17% Fatigue Specimen Preparation.
Muda, effect of welding heat input on microstructure and mechanical properties at coarse grain heat affected zone of abs grade a steel, ARPN Journal of Engineering and Applied Sciences. 10 (2015)
Taib (2018), Improvement of Mechanical Properties in HFMI/PIT Spot Welded Joint, Journal of Mechanical Engineering. 6 (2018) 239-247

There are a number of factors may influence the shape and distribution of basal texture, including rolling stress, deformation temperature, rolling passes, per pass rolling reduction, strip thickness, roll diameter, grain size (this refers to the original grain size), shear banding , second-phase particles and so on[6].
The specimens for optical microstructural observation were prepared by mechanical polishing with polycrystalline diamond suspension glycol based solution.
The yield strength of magnesium alloy greatly affected by slip plane and slip orientation of the grain and the orientation of applied stress, which is Schmid Factor.
Grain size and grain orientation distribution function affect the mechanical property of magnesium alloy with texture, the existence of texture results in the anisotropy of magnesium alloy sheet [7].
The essence of the effect of texture on mechanical property of magnesium alloy is to change the slip system, especially to change the Schmid Factor of（0001）[110] basal slip system, thus to strengthen or weaken the texture.

Tensioning System Factors.
Anchorage Factors.
Other Factors.
Other factors mainly include the anchoring the soil creep and group anchor effect and external factors, but because of the uncertainty of the rock mass, it is hard to quantify.
Due to the creep properties of soil, soil anchor cable's anchorage segment creep can also cause stress of the anchor cable losses, especially in poor mechanical properties of soil.