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Therefore, the ship composite armor structures have good mechanical properties and are very suitable for ship structure protection from underwater explosion.
The key factors related to the dynamic characteristics of ship composite armor structures were also discussed.
(a) EFP formation and penetration into the composite armor structures (b) Experimental results Fig. 5 Simulation results and comparing with the experimental results Main factors affecting the impact resistance.
The damage response of ship composite armor structures to contact underwater explosion is a complicated function of many factors.
One of the important parameters affecting the response is the initial size of the composite armor structures, such as the thickness of the outer steel and the water layer.

Despite the fact that magnesium alloys have appealing properties and advantages, their properties of wear are less known than those of aluminium alloys [7].
Several factors are considered at first, and then the less important factors are eliminated, leaving only the more important factors.
The most significant factor affecting wear is % of reinforcement (R), with a contribution percentage of 80.42%, followed by sliding velocity (S) with 6.75%, sliding distance (D) with 6.02%, and load (L) with 3.29%.
Mechanical properties of magnesium-silicon carbide composite fabricated through powder metallurgy route, Materials Today: Proceedings 27 (2020)1137-1141
Ponappa Evaluation of physical and mechanical properties of AZ91D/SiC composites by two step stir casting process, Journal of Magnesium and Alloys 3.1 (2015) 52-62

Effect of Admixed Recycled Aggregate on Properties of Recycled Concrete Yajun Zhao 1,a, Ying Gao 1 , Lili He 1 1College of Civil Engineering, Hebei University of Engineering, Handan 056038, China azhaoyajun_79@126.com Keywords: Recycled aggregate; Recycled concrete; Mix proportion; Orthogonal design.
Test plan and contents Workability test of RA instead of natural aggregate Consideration of 4 factors, water-cement ratio, sand ratio, fine aggregate, contents of Recycled coarse, fine aggregates instead of natural aggregate, each factor has 3 levels, using L9 ( 44) orthogonal table, it is shown in Table 1.
It indicates that when the water-cement ratio is less, the flow ability and strength can be improved greatly with the water reducing agent adding, but it would be reduced in the end with the water reducing agent adding too much for affecting the bond force of the cement hydrate and postpone growth of the strength.
(2) The water-cement ratio and water reducing agent is the major factors which affect the compressive strength of concrete
[3] R Sir Ravindrarajah,C T Tam.Properties of Concrete Made with Crushed Conrete as Coarse Aggregate[J].Magazine of Concrete Research,1985(3):29-38

Where the variation of these parameters will affect to the mechanical properties of welds (as response) was the shear strength.
Further analysis of the interaction between the welds properties and Friction Stir welding process parameters to obtain the optimum response, was carried out by applying Response Surface Methodology (RSM).
In sticking torque versus shoulder diameter plot, the product of two opposing factors produces a maximum sticking torque.
The variation of these parameters will affect to the mechanical properties (as the response), i.e. the tensile strength of welds joint.
(1) Where Y is the response, x1, x2, ... , xk,are independent factors from 1 to k, and the function Ф is called the response surface or the response function.

These are in turn influenced by the mechanical properties of cells.
These methods have been used also to understand how the mechanical properties of cells change in diseased tissues.
Earlier studies focused on investigating the global mechanical properties of chondrocytes.
Force and displacement data, over time, can then be fitted to acquire cell mechanical properties.
Grodzinsky, Nanomechanical properties of individual chondrocytes and their developing growth factor-stimulated pericellular matrix, J Biomech., 40, 5, (2006), 1011-23

Hence, there is a need to clarify the mechanical characteristics such as fracture strength of such beams.
Until now, many researches have been performed to determine the mechanical properties of MEMS.
Note that the load factor can be obtained by numerically integrating the load factor PDF.
The damages due to the etching process is influenced by many factors such as the plasma gas concentration and flow characteristics, and orientation of the wafer.
It can be considered that the severe damage greatly affected fracture strength.

Factors such as the deflection of tool body, abrasion wear on tool edges, and unstable vibrations caused by tip breakage all affect the results of micromachining.
This model accounts for the parameters of the helix angle, geometrical dimensions, cross-sectional properties, rotation speed, boundary conditions, axial load, rotary inertia and shear deflection.
(1) The drill feed rate is the most significant factor affecting the quality in hole diameter, followed by the peck-drilling return distance.
Others factors contribute little.
Among these four factors, the depth of the centering drill is the most significant one.

The heat developed inside the structure is to be dissipated uniformly without affecting the other components.
The heat developed inside the structure is to be dissipated uniformly without affecting the other components.
Hence the structure for the Nano satellite is designed in considering all this factors.
On comparing the various grads of Aluminium from the point of view of mechanical properties applicable to the satellite structure it is decided to choose ALUMINIUM 6082 for Frames, Ribs and ALUMINIUM 5754 for Shear Panels.
The above mentioned factors are the impact on satellite at the launch, as well as till the satellite deploy from the peapod.

Inadhesion property of aluminum surfaces with bionic morphology Jing Li 1, Qiang Li1, Feng Du2, Wei Zhang1, Chunmin Shang1,* 1School of Mechanical and Electric Engineering, Changchun University of Science and Technology, Changchun 130022, China 2 Changchun Institute of Engineering and Technology, Changchun 130117, China * email: 467189762@qq.com Keyword: aluminum alloy; bionics; reducing adhesion; convex domes; non-smooth Abstract: The bionic inadhesion structures have been built on aluminum alloy substrates by the method of pressing based on the bionic reducing adhesion theory.
The factors influenced inadhesion property were studied.
Table 1 Chemical composition of aluminum alloy Chemical composition Cu Mg Si Fe Mn Zn Ti Gr Al Impurities Purity（wt%） 3.8-4.9 1.2-1.8 0.5 0.5 <0.9 0.25 0.15 0.1 Other 0.15 Table 2 Chemical composition of 45# carbon steel Chemical composition C Mn Si S P Cu Ni Cr Fe Purity（wt%） 0.42-0.5 0.5-0.8 0.17-0.37 0.01-0.035 0.017-0.035 ≤0.25 ≤0.30 ≤0.25 Other The characteristics of inadhesion surface are closely related to the properties of viscous medium.
Separation speed of both smooth sample and non-smooth sample affects adhesive force.
When the move speed of non-smooth sample is greater than 0.3mm/s, the adhesive force is affected but the value still lower than the adhesive force of the smooth surface.

In this paper, based on the structure analysis of feeding system in a certain type of silicon ultra-precision grinding machine, the rigid body coupling virtual prototype model of the feeding system is established using ADAMS, the factors which influencing the stick-slip is analyzed deeply via the dynamic simulation of the virtual prototype.
Introduction As a core part of the silicon ultra-precision grinding machine, the performance indicators of the feed system is one of the key factors which influence affects the machining precision of the silicon wafer.
By combining the function of HyperMesh, ANSYS and ADAMS, the elastic properties of the object can be simulated, so the more practical stick-slip simulation analysis can be achieved.
In order to effectively reduce the occurrence of stick-slip, the factors which influencing the stick-slip of the feeding system in silicon ultra-precision grinding machine is analyzed deeply.
Gao: Chinese Journal of Mechanical Engineering, Vol. 40, 2004, p. 107 [3] J.Y.