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Online since: July 2012
Authors: Zhong Ju Feng, Feng Ma, Jin Wei
The corresponding prevention measures to different influencing factors were presented in the end.
Mechanical Analysis on the Substructure Stability due to Landslides and Mudslides Bridge pile foundation general would not directly influenced by external force, but if bridge pier was affected by an external force such as landslide thrust, the internal force of pile foundation inevitably increase.
Fig.1 Typical section of bridge pier column Fig.2 Pier column’s force diagram impacted by landslide thrust and debris flow pressure Usually, landslide affects pier on one side, but debris flow had fluid properties, so it affects the pier on both sides, the bending moment diagram of pier subjected to two kinds of external force as shown in Fig.3.
The lack of soil around the pile which caused by soil erosion could be an important factor affecting the pile safety, shown in Fig.4.
The bearing characteristics, internal forces, displacements and other characteristics of the pile were influenced by the degree of soil erosion around the pile, the properties of soil around the pile, the material and size of the pile and other various complex factors.
Online since: August 2014
Authors: Takahiro Matsueda
Introduction While it is very important to detect crack size and shape in fracture mechanics, it is hard to measure their precise shapes and mechanical factors.
Using these approximations, we can evaluate various properties of fatigue phenomena.
In Fig. 3, b’ was defined as the length when stress intensity factors K at point D is the same as at D’.
Keer, ‘Stress intensity factors for cracks of arbitrary shape near an interfacial boundary’, Engineering Fracture Mechanics, 1987, 21, (1), 27-41
Takase, ‘Stress concentration factors for round and flat test specimens with notches’, International Journal of Fatigue, 1995, 17, (3), 163-178
Online since: July 2011
Authors: Jiu Hua Xu, Zhi Bo Yang, Li Mei Zhang, Peng Fei Luo
The 3-D solid elements are used in FEM model, and nonlinear factors of temperature-dependent material properties are considered.
Among these three categories of bonding agents, metallic bonding agents offer optimal mechanical and thermal properties and are the optimal bonding material in the fabrication of diamond tools.
Laser beams with high energy density and low energy input have the properties to function in such an application.
All of these phenomena become the important factors, influencing the quality of brazing structure and the usable capability.
The thermal physical nature of material properties changed rapidly with the change of temperature.
Online since: March 2008
Authors: Bai Mei Tan, J.Y. Yuan, X.H. Niu, H.L. Shi, Yu Ling Liu, Chun Xiang Cui
In this paper, the CMP mechanism and the effect of abrasive on SiO2 dielectric were analyzed; the different factors of affecting the CMP were analyzed.
CMP is an integrated process including chemical effect and mechanical effect[4].
It takes the function of mechanical grinding. ②Transmitting material.
To get the high remove rate and control the metallic ion content of the slurry, pH conditioner should have similar property with NH4OH but no volatility.
Summary The removal rate and surface perfectibility of dielectric film CMP are influenced by many factors, such as pH value, abrasive concentration of slurry and slurry flow.
Online since: June 2014
Authors: Qiang Yu, Xiang Yu Ding
Because of its "sealing ring thin-walled, large deformation, precision" on the whole, the development of metallic sealing rings are extremely difficult, and the design analysis process is affected by many factors, design analysis affected by many factors.
Under high temperature, the strength of the material is still very good, its oxidation resistance, fatigue, fracture toughness, plastic and other comprehensive performance are very good also, the basic mechanical properties parameters are shown in Table 1[3].
These factors have a lot of uncertainty and is unable to avoid, Therefore, are considered in the analysis is very difficult.
This article selected the plane that W metallic sealing ring contact with the top and bottom of flange as the target surface, Considering the influence of friction factors, choose the coulomb friction model, According to mechanical design manual [5] standards, selected the friction coefficient of 0.15.
Mechanical design manual[M].Bei Jing: Mechanical industry press,1992
Online since: March 2024
Authors: Yue Zhang, Hikaru Miyaki, Jianliang Zhang, Atsushi Sakuma
In Figure 1(a), 'compression touching' represents a perceptual indicator involving various factors, such as fabric structure, yarn material properties, and surface characteristics.
A simplified model was adopted to exclude the variable factors.
The finding indicates the need for a closer examination of the factors that influence the magnitude of such inherent stress.
Physical Properties of Textile Fibres.
Modelling for predicting the mechanical properties of textile composites-A review.
Online since: March 2019
Authors: Shan Tung Tu, Guo Yan Zhou, Peng Yang Duan, Dong Xing Wang
There is no complete and reliable testing standard for mechanical properties of brazing joints.
Chen [1] studied the mechanical properties of BNi-2/316L brazed joints by uniaxial stretching.
Analysis of Factors Affecting Peel Performance Effect of base metal thickness on peeling performance.
There is not enough wetting in the brazing angle, which results in poor mechanical properties.
Considering the factors of crack initiation and expansion, it is more appropriate to select the two-layer brazing filler metal.
Online since: July 2016
Authors: Katya Brunelli, Mariano Angelo Zanini, Carlo Pellegrino, Flora Faleschini
The quality of the aggregates also significantly affects concrete properties; therefore, the use of recycled aggregates is mostly not recommended in HPC design, due to their high absorption capacity, unstable properties and weak strength [7].
Results and Discussion Fresh concrete properties and mechanical strength.
Fresh concrete properties and mechanical strength.
[12] US-EPA, AP-42 Compilation of Air Pollutant Emission Factors, U.S.
[13] UK NAEI, Vehicle speed emission factors.
Online since: May 2007
Authors: Xiao Dong He, Li Ma, Zhao Hui Hu, Yue Sun
Optimum Design�Microstructure and Mechanical Properties of Ti/Ti3Al Multi-layered materials L.
This study concerned with the optimum design, microstructure and mechanical properties analysis of a multi-layered metal/intermetallic materials consisting of Ti and Ti3Al prepared by the electron beam physical vapor deposition (EB-PVD) technology.
The properties of these constituents are summarized in Table 1.
In the calculations, the plastic of materials was considered and the yield stress was determined according the mechanical properties of component material as shown in Table 1.
The stress-strain curve is one of the fundamental properties that determine mechanical properties in ductile phase reinforced composites [8].
Online since: December 2016
Authors: In Kyu Kwon
Mechanical properties of SM 520 and SM 570 at high temperatures.
At here, a SM 520 showed a little fast increasing pattern than others and this is assumed that a specific heat of the SM 520 is regarded as one of a major factors.
After calculation using mechanical properties and thermal ones, as the structural strength is increased the structural stabilities turned out to be worse.
Taleff, Experimental Investigation of Mechanical Properties of ASTM A992 Steel at Elevated Temperatures, Am.
Kwon, Evaluation Study on the Mechanical and Thermal Properties of High Strength Structural Steel at High Temperature, J.
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