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In high strength concrete a proper binder content is one of the important factors to have a high compressive strength.
The properties of coarse aggregate such as: water absorption, shape, aggregate strength, and surface texture, play a role in the effect of HSC mechanical properties.
Properties of coarse aggregate.
Maslehuddin, “Effect of coarse aggregate quality on the mechanical properties of high strength concrete,” Constr.
Zhang, “Effect of coarse aggregate type on mechanical properties of high-performance concrete,” Cem.

Further testing and comparative study of mechanical properties must be considered in order to define the best process parameters for hollow plastic balls manufacturing by Ultrasonic Welding.
The ultrasonic horn design and material properties are presented in Table 2.
Table 2: Ultrasonic horn design and material properties The simulation results are shown in Tables 3 and 4.
For products where mechanical performance is important (i.e. low load bearings), compressive strength and deformation measurements are required. 5.
Mughal, Optimizing the weld factors affecting ultrasonic welding of thermoplastics.

Introduction Rock mass in-situ stress field is affected by several factors, among which the effect of the structural plane is quite significant and also quite difficult to precisely evaluate, using numerical method to analyze this problem is necessary and feasible.
Considering the complexity of the mechanical properties of the structural plane, it is generally simplified in numerical model, usually adopting rigid or linear deformation model[3,5], but the linear deformation model could not precisely reflect its actual physical and mechanical properties, several non-linear deformation structural plane have been proposed, among which the Barton-Bandis hyperbolic model is widely used[6,7].
Fig.7 shows the distribution of stress concentration factor of the maximum principal stress in the affected zone.
Actual structural plane deformation is non-linear, deformation stiffness is related to the physical and mechanical properties of the structural plane, and vary with the load, the BB hyperbolic model could well reflect the actual deformation process of the structural plane under load.
Effect of Physical and Mechanical Properties of Rocks on Stress Field in Vicinity of Fractures [J].

Low carbon steel shows the typical mechanical properties in tensile test, so this kind of steel is widely used in engineering applications [1].
Tensile test of metal material is a kind of test method used for determining mechanical properties of materials.
The performances of metal material such as elasticity, plasticity, strength and toughness under the external force are called the mechanical properties [2].
Because it hardly affected the material properties, the initial tensile curve was straight line.
It is less affected by external factors, so in general engineering applications modulus of elasticity is regarded as constant.

In this paper, pure metals aluminum was used to study the effects of pulse current on their mechanical properties.
Figure.2 Influence of pulse current on elongation and the tensile strength Analyses Analysis of pulse current on the mechanical property of plastic deformation.
In this experiment, pulse current has a greater impact on the mechanical properties of aluminum 1A99 during stretching: with the rose of elongation, the decline of the tensile strength, which is called electro-plastic effect.
Based on the detailed analysis made above, effects of pulse current on tensile samples can be concluded that their mechanical properties and stress distribution is changed.
In order to acquire the accurate temperature, we should correct the surface emissivity, which was affected by complex factors and increased the difficulty to process the result of a measurement.

Computational fluid dynamics and Numerical acoustic response for ship accommodation areas due to propeller excitation, towards a human factors recommendations Hany Abdelkhalek1,a, Duanfeng Han1,b, Gao liangtian1,c,Qing Wang 1,d 1 College of shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China.
ahany_abdelkhalek@hotmail.com, bhanduanfeng@hrbeu.edu.cn, c gaoliangtian@163.com, dwangqing@hrbeu.edu.cn Keywords: acoustic comfort design, human factors, ship propulsion.
Structureborne sound is directly induced by any mechanical force.
Recently researchers found that Long-term exposure to infrasound and low frequency noise (ILFN, including infra-sound) can lead to the development of vibroacoustic disease (VAD). [9] This acoustical phenomenon affects organs and systems other than hearing, particularly the respiratory tract.
The international studies on maritime accidents has shown that fatigue is continuing to be either the main cause or a contributory factor in a considerable number of casualties at sea resulting in the loss of life and damage to the environment and property.

For the flexible three-dimensional microstructure, the GMC single-cell method was applied to establish the mechanical model of the bending interface, and then the interface micro-element method based on composite materials was performed to work on the interfacial properties of weak interfaces and micro-mechanical behavior.
As a result, a flexible interface model for the interface stress was constructed and it would be helpful to improve the bending properties of the flexible three-dimensional microstructure.
Therefore, it would have a direct impact on the bending properties[1].
Aboudi[2] proposed the GMC general unit cell method and the nonlinear spring element model for analyzing the weak interface bonding properties of composite materials.
Fig.4c shows that under the constant response condition, the bending stress caused by bending moment has the greatest impact on the transverse tensile stress and strain, which is the main factor that affects the bond quality of interface.

In this study, we conducted the experiments to reveal how anisotropic properties of polymetric materials affect to the deformation behaviors near the crack-tip under equal and unequal biaxial stress conditions.
Figure 2 and Table 1 show the shapes, dimensions and optical properties of the specimens.
We examined how the isotropic and anisotropic properties of the polycarbonate materials affect differently on the crack-tip under equal biaxial stress by using photoelasticity and the caustic method.
We examined how the isotropic and anisotropic properties of Fig. 9.
Conclusions The stress intensity factors, KI, KII of polycarbonate band plates with isotropic and anisotropic properties under equal and unequal biaxial stress conditions were found by photoelasticity and the caustic method, and compared.

There are several factors that influence the mechanical properties of FDM-fabricated CFRPs, such as fiber type, fiber volume fraction and matrix material [5].
In addition to fiber type, the matrix material is also affecting the mechanical properties of FDM-fabricated CFRPs.
To the best knowledge of the authors, the mechanical properties of continuous glass fiber reinforced Onyx have not been reported in literature to date and are studied experimentally in this paper.
Stress-strain curves and tensile properties.
Tensile properties of current work and referencing data.

The welded metal bellows stand types of load during working, there are many factors influencing the tear and the elasticity loss of the welded metal bellows.
According to various load and displacement properties, the strength of the bellows is divided into axial strength, flexural strength, and torsional strength [2].
Table 2 The material properties of welded metal bellows Material Properties Young's Modulus (pa) Poisson’s Ratio Density (kg/ m3) Limit of Yielding(Mpa) Plastic Modulus(Mpa) Value 1.93× 1011 0.3 7.80× 103 207 207 An algorithm for generating 3mm tetrahedral mesh for welded metal bellows is adopted. 181 710 cells and 90466 nodes are divided for single layer bellows, 351460 cells and 185540 nodes are divided for double layer bellows.
Table 2 shows the material properties of welded metal bellows.
Chemical Industry Press, 2009, 77-79 [5] Zhaogao Luan, Khonsari M.M: Numerical Simulations of the Flow Field around the Rings of Mechanical Seals[J], Journal of Tribology, Vol.559-565(2006) [6] Flitney,R.K and Nau,B.S.A study of fators affecting Mechanical Seal performance prco.