Search results

The present one has a new displacement field which introduces undetermined integral variables, the shear stress free condition on the top and bottom surfaces of the plate is respected and consequently, it is unnecessary to use shear correction factors.
Introduction Nowadays, the electrical, chemical and mechanical characteristics of the nanostructures, including the nanotubes, nanorods and nanoplates have been received a great attention in nanosciences and nanotechnology because of their superior properties such as the electrical, chemical and mechanical characteristics [1-14], and to their wide applications in micro/nano electro-mechanical systems (MEMS/NEMS) and nano actuators [15, 16].
For this end, the geometric and the material properties of nanoplates are taken as , and .
The material properties are Young's modulus , Poisson's ratio and the mass density [24].
On the dynamics of porous nanotubes with variable material properties and variable thickness.

Zhao Jun et al[5]studied the distribution of stress, strain and temperature during the form process of serrated chip, and investigated the mechanism and influencing factor of serrated chip.
Chen et al[7]studied the form process of serrated chip of hardened bearing steel GCr15 by thermal-mechanical coupling finite element simulation, and analyzed the influence of chamfer angle on the cutting force and cutting temperature.
Fig.1 Geomegry model The constitutive relationship is used to describe the material mechanical properties.
The Johnson-cook model is adopted in this paper because it can be used to describe the material property under the condition of high strain rate.
Tabel 1 Material parameters of Johnson-Cook model for hardened 45 steel material A[Mpa] B[Mpa] n c m Hardened 45 steel 553 600 0.234 0.013 1.0 The friction between chip and tool has great inprotant affect on the cutting force and cutting heat.

Fig.1 TRIZ process of contradiction solving model Physical Contradiction and Its Solving Principles Physical contradiction means that a given subsystem (element) should have the property A to execute necessary function and the property non-A (anti-A) to satisfy the conditions of a problem.
It is a typical mechatronic integrated mechanical.
Mechanical push-pull principle is usually selected to implement the working process.
In fact, by analyzing the working conditions of shell pushing machine as above, we know that the main factor is the size.
Mechanical principle and design (China Machine Press, 2004, in Chinese).

Vibration force, impact frequency and site soil are important influence factors on ground vibration attenuation.
The physical and mechanical parameters of different soil are shown in Tab. 1.
Tab.1 Physical and mechanical parameters of calculation mod Soil layer Density (kg/m3) Average depth(m) Moisture content ω% Void Ratioρ cohesion (kPa) Friction Angle (·) Silt 1992 10.27 21.52 0.65 20.6 24.6 Mucky silt clay 1790 17.43 32.92 1.17 18.8 11.2 fine sand 2031 26.91 18.9 0.59 9.7 40.5 powdery clay. 2160 35.2 26.7 1.06 36.9 42.5 Field testing design Test purpose and items.
The vibration attenuates with the increase of the distance from the impacting point .The attenuation of the ground vibration is closely relative to the physical and mechanical properties of the ground media[10].
(4) The attenuation of the ground vibration is closely relative to the physical and mechanical properties of the ground media.

One of the environmental factors that can influence the onset of fatigue is noise exposure.
Result Blibiometric Analysis., A useful tool for doing a quantitative analysis of a particular research subject is provided by bibliometrics, This research method takes into account the bibliometric properties of a research publication.
Of the 28 articles that were selected using a two-factor factorial experiment, the influencing factors and response variables were studied, including the influencing factors in the form of noise levels and noise sources and the observed response variables in the form of changes in the EEG signal on attention, mental workload and stress[22,6,23].Studies using EEG to examine how noise affects cognitive function.
Experimental research constrained variables are solely brought about by free variables and not by other factors.
Affect.

However, many factors tend to accelerate the deterioration of the existing bridge structures, for instance, increasing of aged bridges, increased traffic volume and excessive truck weights, severity of the environmental conditions, and low-level maintenance decision-making.
Meanwhile, the reinforced concrete slab affects the elevation of the bridge deck, some adjustments should be conducted to the deck profile grade.
In fact, the original work system has been changed, there are some different mechanical properties between the new and old work system after strengthening.
According to above mechanical properties, the structural analysis of bridges reinforced with external prestressing can be divided into two phases: the prestressing and live load
Properties of FRP in comparison with steel (4) Steel-sticking technologies: When there are low load-carrying capacity, serious rusted rebars and lateral cracks in main girders of the bridge, the steel plates can be attached to the tensile zones with adhesives and anchor bolts to replace the reinforcement and improve the bridge bearing capacity.

However, it was demonstrated that more than 6500 genes are involved in bone healing: this outlines that multiple biological factors are needed to promote the formation of the complex molecular environment for the optimal formation of bone [5].
Yet, pore size, volume fraction and shape affect the mechanical properties of the material, which significantly influences the osteointegration between implants and surrounding tissues [17].
Until now, before the advent of the CAD-CAM customization of the bone plate that allows splitting the biochemical composition properties from the biomechanical issues, it was a difficult compromise to obtain a bone-like porosity and a sufficient mechanical strength; if mechanical integrity was reduced, this might result in a implant failure.
Hydrophilic and osteoinductive properties have also been improved using HA coating of total surface area to favor a better biological fluids ad cell infiltration and colonization as well as osteogenic differentiation. 2.
The novel mineralization process procedure overcomes two limitations: maintaining the collagen structure and functionality intact and not affecting the HA morphology and cristallinity.

Stabilization is a method used to modify soil properties by application of chemical, biological, or mechanical means for the suitability and attainment of a specific engineering purpose [3].
In the choice of selecting the appropriate stabilizer to be used, different factors determine the type of stabilizer to be used in ensuring the properties of the soil are raised for the intended purpose.
These factors may include soil type, the nature of construction work, and the accessibility of the materials used in the construction [6].
Properties of Soil.
Dalvi, Enhancement of mechanical properties of expansive clayey soil using steel slag, in: W.

The numerical simulation is performed with the thermokinetic software package MatCalc, where the precipitation kinetics is examined for the experimentally applied thermo-mechanical cycles.
One of the key factors determining the resistance against sulfide stress cracking is the type of carbide and nitride precipitation occurring in the production process.
Tempering of martensite is utilized to adjust the mechanical properties of Q&T steel according to its application requirements.
The fact that M3C and M7C3 are found to be cigar-shaped is accounted for by the shape factor of 3 [18].
Obviously, not only M3C and M7C3 are affected by these changes, but also VC precipitates are now in better agreement with the experiments.

The paper presents experimental analysis of steel bridge dynamic properties.
One of the key factors causing excessive noise was the bridge deck as the dominant noise source.
Dynamic properties of the bridge structure.
Therefore, the static and dynamic properties of the bridge structure at different speeds and actions were observed.
Fojtik, Measurement of bridges Dynamic Properties, Bridges 2014, Brno, ČR, April 24-25, 2014, pp. 225-230, ISBN 978-80-86604-62-6