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In industrial construction of loess area, rainfall is one of the important factors inducing excavated slope instability.
Rainfall is one of the important factors inducing slope instability.
They emphasized the affect of matric suction to soil slope.
Y direction permeation rate closer to Surface water level were stable and less affected by the terrain.
Defined Mohr - Coulomb constitutive as material constitutive model and determined the material properties by the soil weight, shear strength el. which confirmed by test.

Formability of profiles in bending is generally related to mechanical properties of the material, geometry of the cross section as well as bending method [3].
The key is to establish tight control throughout the process route, providing consistent mechanical properties and forming conditions.
In controlling springback, there are two issues of particular interest: (1) dimensional targeting, i.e. designing a tool (and process) with the capability of producing a dimensionally correct part under standard operating conditions, as well as nominal incoming part geometry and mechanical properties; (2) dimensional accuracy, i.e. dealing with the variability in the bending process (noise) and the incoming part’s geometry and mechanical properties in such a way that the dimensional characteristics of the formed product are within the drawing tolerances provided by internal and external customers (Geometric Dimensioning and Tolerancing, GD&T).
Although the material properties of the profiles were significantly different, this is not clearly reflected in the results.
Conclusions The present work seeks to improve the understanding of factors that affect dimensional accuracy in industrial bending operations.

F is a scaling factor in the optimal range of 0.5 to 1.0.
The properties of the materials constituting the studied structure are presented in the Table.3.
Material properties.
Material properties SAC305 FR4 resin EPOXY copper Young's modulus (GPa) 51.3 17 17 115 Poisson’s coefficient (without) 0.35 0.39 0.24 0.31 Density (Kg/m3) 7400 1800 1800 8890 Coefficient of thermal expansion (mm/K) 20 18 22 17 Shear modulus (GPa) 19 2.4 7.4 44 The temperature cycle applied to the structure is of a duration of 60 min.
Tan, Development of convective reflow- projection moiré warpage measurement system and prediction of solder bump reliability on board assemblies affected by warpage.

In the open-die forging simulation，heat transfer coefficient between blank(880℃) and open-die (200℃)is 11, the surrounding environment temperature is 20℃, friction factor is 0.3.
Therefore, flash parameter is an important factor which influences on metal filling, forging force and flash materials consumption.
Added value does not affect the equipment tonnage selection, larger bridge width leads to Smaller loss of metal flash, higher material utilization and life of mould bridge width, we suggest adjusting the bridge width for 11 mm in the mould design.
Closed-die forging Closed die forging blank is formed in the complete closed mould cavity, therefore solid metal flow properties is considered, namely, whether the solid metal under pressure can realize volume redistribution, and fill the mould cavity.
Fig.6 Mould structure chart of conductive body closed-die forging 1. lower plate 2. die pad 3.top plate 4. supporting ring 5. ejector pin 6. core retaining plate 7. core 8. core mounted plate 9. liftout ring 10. cope plate 11. upper clamping plate 12. male mould glutting 13. male mould 14. male mould mounted plate 15. female mold 16. shrink ring 17. tommy 18. die shoe 19. carrier rod Conclusions T2 copper conductive body with basic shape but low material utilization ratio and difficult subsequent processing was obtained by open-die forging. it is difficult to be forged with unsuccessful local filling by closed-die forging. conductive body with accurate sizes, shapes and compact texture was got by open-die forging. partial casting defects was eliminated, while other properties of forging are relatively improved comparing to castings, electrical conductivity can meet the requirements, and the internal and external complicated shapes need no mechanical processing. it

This paper mainly uses the fault tree method to analyze the security of lightning protection system of the BIPV, to identify the main factors of influencing the lightning accidents caused by the loss of life, and provide a reliable basis for determining the safety performance of the lightning protection system, to achieve the purpose of preventing lightning accident prediction.
Secondly, lightning surge generated in PV devices will introduce into building through the PV system, resulting in electronic equipment damaged and personal life damaged, incalculable economic loss of property and loss of life.
(Layer 7) ①“Insulation aging” caused by “Environmental Factors” or “Insulation material does not meet the requirements”, so using logical OR gate connections.
The “Environmental Factors” is a function of a normal state of the event, so the symbol is a space. ②Like (6)--①. ③“Corrosion of earth termination equipment” caused by “Environmental Factors” or “Earth termination system made of different materials Interconnect ” , so using logical OR gate connections.
And then analyze the main factors affecting the safety work of the building and solar photovoltaic power generation system.

The adhesion of oral bacteria on the denture surface is influenced mainly by three factors, including microorganism, dental materials and host [2,3].
There may exist different surface physicochemical properties, corrosion resistance, solvent resistance, biological toxicity in different types of prosthetic materials.
In the machining process, acrylic resin can be affected by various factors including its poor physical and mechanical properties, thus resulting in structural aging and chemical changing to make it more conducive to bacteria adhesion.
To some extent, the alloy materials can reduce bacteria adhesion. because their physical and chemical properties are relatively stable.
Shearing force played an important role in cells cultivation as a parameter affecting cell growth and metabolism.

The influences of main structure lateral stiffness related factors on the plasticity developing process are researched.
A plastic shear cross section is defined to consider the plastic shear properties of the component.
The order of the factors impacts is inclined column cross section the largest, wall thickness second and coupling beam height the smallest.
Fig.11 shows the factor influences on the structure plastic story drifts, where enlarging the factors can increase the structure lateral stiffness and decrease the structure story drift.
The order of the factors impacts is coupling beam height the largest, inclined column cross section secondary and wall thickness the smallest.

At the same time, the low content of carbon conducive to obtain uniform acicular ferrite and bainite structure during continuous cooling and improve the mechanical properties of steel.
The inclusions in the steel to is the root causes of the HIC, the formation of SCC are closely related to HIC, and important factor affecting the overall performance of the steel.
Pipeline steel future needs not only higher strength and toughness, but also with high deformation resistance and resistance to acid corrosion, stress corrosion properties, etc.
In the production of pipeline steel not only to control refining outside the furnace should be considered, also considering the comprehensive influence of rolling and other factors [27, 28, 29].
Materials factors influencing the initiation of near-neutral pH SCC on underground pipelines [A], 2000 International Pipeline Conference Volume 2 [C], ASME, 2000, 979 ~ 988

A390 alloy possessing above excellent properties mainly relies on the microstructure with many small primary silicon grains distributed uniformly.
Compared with Figure 2, the primary silicon grains in Figure 3 are obviously refined and the shape factors are modified somewhat.
These factors can make the primary silicon grains larger.
Owing to the higher silicon content in A390 alloy, a refining modification treatment generally is required when solidified, so that the equivalent diameter of the primary silicon grains can only meet the requirements of the mechanical properties.
Wu, Mechanical properties and microstructures of Al alloy tensile samples produced by serpentine channel pouring rheo-diecasting process, Transactions of Nonferrous Metals Society of China, 21 (2011) 1473-1479

Polycrystalline diamond (PCD), is a tool material and widely used in nonferrous metal processing due to its excellent properties, such as high hardness, high wear resistance, high thermal conductivity and low friction coefficient.
Wang yongsheng et al. [7] established the finite element model of orthogonal cutting in deform-3D software, and considered the key factors affecting cutting simulation, such as the constitutive relation of workpiece material, automatic repartition of local grid, chip friction and chip separation, and obtained the qualitative relation between cutting speed and residual stress.
Therefore, it is the key to ensure the accuracy of the finite element model to build a constitutive model that can truly reflect the characteristics of the material processed by comprehensively considering the influence of various factors on the material flow stress.
In addition, with the increase in feed, milling cutter and chip contact length increase, increase the area of cutting heat, chip take away more heat, several factors affect each other, so that the temperature increases.
Mechanical science and technology, Vol. 27 (2003), p.42