Search results

There are two typical seismic damage characteristics to the masonry building with frame shear wall structure at first two stories, and the lateral stiffness ratio of the third storey to the second storey is one of the key factors mostly affecting the seismic performance of this kind of building.
Also, the factors that considered in an experiment are limited.
So the lateral stiffness ratio of the third storey to the second storey (K3/K2) is one of the key factors mostly affecting the seismic performance of this kind of building.
For there are no damaged plasticity models for bricks, considering the brick and concrete are brittle materials and the two constitutive relation curves are similar, we can consider mechanical properties of the two materials are similar.
Modal properties.

The main properties of the part surface layer able to affect the part service properties are the surface roughness, the hardness and the state of the residual stresses.
Over the years, the researches was directed inclusively in the field of service properties of the metallic parts surfaces previously affected by vibratory ball burnishing processes.
Patel and Kumani considered in 2011 that there many factors able to affect the results of the vibratory ball burnishing process [3].
The main factors able to affect the results of the vibrorolling process are the mechanical properties of the workpiece material, the properties of the vibrorolling tool material and the dimensions of the active zone of the vibrorolling tool, the presence and the properties of an eventual processing liquid, the characteristics of the motions specific to the vibrorolling process, the force exerted by the vibrorolling tool against the workpiece surface layer etc.
Thus, the ball vibrorolling could be applied to improve the service properties of the cylindrical parts made of steels able to be affected by the results of the ball vibrorolling process.

Abstract: Residual stress in green compact is an important factor to influence the quality of the compact and corresponding powder metallurgy product.
Drilling, turning and milling, which are common operations in the green state, require a green compact of high strength, with no defects and excellent mechanical properties.
These stresses can decrease the properties of materials and cause flaw.
Two compaction types including single action and double action with different lubricant conditions have been studied which give a better understanding of the factors affecting the final stress state.
As the density increases, the mechanical properties of the compacted body are affected.

The different in composition of glass fibre is expected to yield different response hence can be used to determine the properties of the material.
However, in dynamic situations their behavior is very complex due to a large number of factors that govern their response.
These factors include impact velocity, specimen geometry, impactor size, clamping mode, matrix properties and reinforcement geometry [2].
Also the mechanical behavior including impact behavior of composites is much dependent on the fiber volume fraction.
Influence of fibre length and concentration on the properties of glass fibre-reinforced polypropylene: 1997;28:277–88

The paper embarked from the analysis the chemical and physical properties of potato starch.
An orthogonal experiment of L27 (313) was designed to identify the main factors affecting them.
The conditions of this chemical reaction are likely to affect considerably the swelling properties of the microspheres in biological media and their biodegradability.
According to range analysis, orthogonal experimental design can ascertain the significance sequence of all the studied affecting factors and the optimal level of variables.
B Wurzburg, in Modified Starches: Properties and Uses, CRC Press: Boca Raton, FI (1986)

Previously, the micro- and macro- tribological properties of carbon nitride coatings in various gases have widely been studied [2-11].
Experimental procedures Deposition method and mechanical properties' measurements of a-CNx coating.Prior to deposition, SiC disks (φ30 mm×t 4 mm) were ultrasonically cleaned in acetone and ethanol for 30 minutes.
The deposition rate was 20Å/s, and the coating thickness was about 0.5µm.The mechanical properties of a-CNx coatings were evaluated using a Nano Indenter MZT-4T.
Ball-on-disk wear test and microanalysis of sample surfaces.The physical properties of SiC ceramic used in here are shown in Table.1.
Surface roughness and mechanical properties of a-CNx coating and SiC disk.

Study on Hybrid Vehicle Regenerative Braking Control Parameters Affecting to Vehicle Performance Analysis and Simulation Zhongwei Zhang1, a 1Sino-German school of mechanical and electronic, Wuxi Professional College of Science and Technology, Wuxi 214028, Jiangsu, China azhangzhzsd@126.com Keywords: Hybrid vehicles, Regenerative braking, Energy conservation, Computer simulation, Parameter optimization Abstract.
Computer Numerical simulation and simulation results show that the regenerative brake control parameters for hybrid vehicle fuel consumption and greater impact on the SOC, and the regenerative braking may affect the minimum speed limit of the regenerative braking effect, the lower the minimum speed limit the greater the braking energy recovery, thesis research is regenerative braking hybrid vehicle control parameters selected to provide a reference.
Sugawara developed an emission-optimized track assignment model that used average speed CO emission factors developed by the California Air Resources Board.
Influence Analysis The dynamic property of the hybrid electric vehicle is not affected by the regenerative braking control parameters.
In the event of larger participation extent of the regenerative braking, the power generation torque of the motor will be greater, the batteries will have more in-depth charging opportunities, SOC will maintain good level, and the loss of mechanical braking power will be less, thus, the fuel consumption will be superior in case of higher regenerative braking proportion compared to that of the lower regenerative braking proportion.

This paper mainly studied and discussed crawler walks the organization design principles and exercise stress analysis, summarized the influence factors of walking organization for the future, the design of the machine can achieve reasonable structure, safe and reliable, action flexible have laid a good foundation.
l Influence of the mobile mechanism adhesiveness caterpillar, remove soil properties, factors of caterpillar bearing length and width outside, main and mechanical weight, shoe thorn height and crawler supporting surface pressure distribution than.
l Increase mechanical weight can improve adhesion properties, especially in sandy soil.
In fact, caterpillar walk institution in machinery industry has been widely, the factors affecting its walk not only and mechanical structure and parameters, but also on the properties of soil and the ground have a close relationship.
(Mechanical Industry Press, Beijing, In Chinese, 2001)

It has moderate carbon content and excellent comprehensive mechanical properties, such as high strength, good toughness, and excellent weldability.
Its chemical compositions and mechanical properties are shown respectively in Table 1 and Table 2 according to GB700-88.
C Si Mn P S 0.12－0.20 0.12－0.30 0.30－0.67 ≤0.045 ≤0.050 Table 2 The mechanical properties of Q235B steel.
The crack growth rates were higher in the welding fusion zone due to its poor mechanical properties and non-uniform structures
Dynamic Stress concentration factors.

Introduction Titanium diboride has drawn great attention due to its refractory properties and high conductivities and extensive research activities have been done on the processing and properties of TiB2containing composites [1-6].
But it is not easy to study the evolution of nanostructure of the powders during spraying which is essential for controlling the structure and properties of the coatings.
Due to the low temperatures involved, cold spraying makes it possible to retain valuable properties of the powders.
The problem is in the preparation of an appropriate composite structure from the phases dramatically differing in mechanical properties.
So, in detonation sprayed coatings, the size of particles increased compared to that in the powders due to high temperatures involved, the mode of spraying greatly affecting the microstructure.