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Online since: April 2004
Authors: Hiroshi Okada, Masanori Kikuchi, S. Endoh
Kikuchi2
1
Department of Nano Structure and Advanced Materials, Kagoshima University
1-21-40 Korimoto, Kagosima 890-0065, Japan
2
Department of Mechanical Engineering, Tokyo University of Science
2641 Yamazaki, Noda 278-8510, Japan
Key Words : Finite element method (FEM), S-version finite element method (S-FEM),
Virtual Crack Closure Integral Method (VCCM), Stress intensity factor (SIF)
ABSTRACT
In this paper, a simple but highly accurate analytical method to evaluate stress intensity factors
based on an element overlay technique is presented.
INTRODUCTION Fracture analyses are very important in modern engineering activities.
INTRODUCTION Fracture analyses are very important in modern engineering activities.
Online since: October 2008
Authors: Hong Fang Li, Chang Gong, Zhi Fang
The stress lag in external tendons can be
prevented and material benefits can be maximized using the technique in structural strengthening.
Corrosion free, high strength-to-weight ratio enable CFRP composites to be a potential replacement for ordindary steel external tendons in engineering applications.
It is expected that failure mode of the beams is concrete crushing rather than tendon rupturing for engineering safety.
Li, in: Composites in Civil Engineering, edtied by A.
China civil engineering journal, Vo. 32, No. 4(1999), p. 37-44.
Corrosion free, high strength-to-weight ratio enable CFRP composites to be a potential replacement for ordindary steel external tendons in engineering applications.
It is expected that failure mode of the beams is concrete crushing rather than tendon rupturing for engineering safety.
Li, in: Composites in Civil Engineering, edtied by A.
China civil engineering journal, Vo. 32, No. 4(1999), p. 37-44.
Online since: October 2012
Authors: Hui Zhang, Tie Hang Wang, Xing She Lu
With the implementation of Western China Development, the scale of engineering projects such as road engineering and hydraulic engineering in the loess plateau keeps increasing.
The engineering properties of unsaturated loess in shallow strata are key factors that determine whether the projects will succeed or not.
The soil sample used in the experiment was a column wrapped by heat-insulating material to ensure the one dimensional heat transfer in the soil sample along the axial direction.
Transient Seepage Model for Saturated-unsaturated Soil System: A Geotechnical Engineering Approach[J].
Chinese Journal of Geotechnical Engineering, 2001, 23(1): 3-13.
The engineering properties of unsaturated loess in shallow strata are key factors that determine whether the projects will succeed or not.
The soil sample used in the experiment was a column wrapped by heat-insulating material to ensure the one dimensional heat transfer in the soil sample along the axial direction.
Transient Seepage Model for Saturated-unsaturated Soil System: A Geotechnical Engineering Approach[J].
Chinese Journal of Geotechnical Engineering, 2001, 23(1): 3-13.
Online since: August 2013
Authors: Chye Heng Chew, Ghim Ping Ong, Tien Fang Fwa, Jia Sheng Yang
Finite-Element Analysis of Effect of Wide-base Tire on Tire-Pavement Noise
JIA SHENG YANG1,a,Tien Fang FWA1,b,Ghim Ping ONG1,c and Chye Heng CHEW2,d
1Department of Civil Engineering, National University of Singapore, 1 Engineering Drive 2, Singapore 117576
2Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576
ayangjiasheng@nus.edu.sg, bceefwatf@nus.edu.sg, cceeongr@nus.edu.sg, dmpecch@nus.edu.sg
Keywords: Tire-pavement noise, Finite-element analysis, Wide-base tire
Abstract: This paper investigates the effect of tire width to tire-pavement noise.
Although past experimental efforts allow the development of empirical relationships between tire-pavement noise and the factors affecting noise, they do not provide detailed engineering information (such as spatial, temporal and frequency distributions of sound pressure as well as sound pressure variations in the nearby field) which is essential for an in-depth understanding tire-pavement noise generation mechanisms.
Key material properties include: dynamic viscosity = 1.51 x 10-5 kg/m.s, bulk modulus = 142 kPa and density = 1.205 kg/m3 [14].
An infinite element for analysis of transient fluid-structure interactions, Engineering Computations, 2 (1985) 319-329
Mioduszewski, Certificatoin of Vehicles Used for Tire/Road Noise Evaluation by CPX Method, Noise Control Engineering Journal, 57 (2009) 2009
Although past experimental efforts allow the development of empirical relationships between tire-pavement noise and the factors affecting noise, they do not provide detailed engineering information (such as spatial, temporal and frequency distributions of sound pressure as well as sound pressure variations in the nearby field) which is essential for an in-depth understanding tire-pavement noise generation mechanisms.
Key material properties include: dynamic viscosity = 1.51 x 10-5 kg/m.s, bulk modulus = 142 kPa and density = 1.205 kg/m3 [14].
An infinite element for analysis of transient fluid-structure interactions, Engineering Computations, 2 (1985) 319-329
Mioduszewski, Certificatoin of Vehicles Used for Tire/Road Noise Evaluation by CPX Method, Noise Control Engineering Journal, 57 (2009) 2009
Online since: October 2014
Authors: Xiao Han Cheng, Shan Ming Luo, Xue Feng Chang, Dan Xie
Chinese Journal of Mechanical Engineering,2003, 39(3)
Journal of Fluids Engineering, 1996
AUTOMOTIVE ENGINEERING,2003,25(4)
Proficient in CFD Engineering Simulation and Case Combat—FLUENT GAMBIT ICEM CFD Tecplot, M.
[9] H.J.Gerhardt,C.Kramer.The Aerodynamic Optimization Of The ZAKSPEED Formula 1 Racing Car[J],Journal of Wind Engineering and Industrial Aerodynamics, M.
Journal of Fluids Engineering, 1996
AUTOMOTIVE ENGINEERING,2003,25(4)
Proficient in CFD Engineering Simulation and Case Combat—FLUENT GAMBIT ICEM CFD Tecplot, M.
[9] H.J.Gerhardt,C.Kramer.The Aerodynamic Optimization Of The ZAKSPEED Formula 1 Racing Car[J],Journal of Wind Engineering and Industrial Aerodynamics, M.
Online since: August 2021
Authors: Xiang Li, Da Hai Hu, Ke Fu Chao, Zhi Qiang Song, Yi Zhi Ma, Yehejong Saqier, Xin Ran Wang, Feng Xiang Wang
Far-infrared luminescent materials can not only be used for plant lighting and growth.
So the adapted blue LED package produces white light garnet phosphors dominate Gd3Al4GaO12 which is a novel and highly stable material in the matrix of many luminescent materials[10,11,12].
Compared with the commonly used garnet, Synthetic raw materials are low-priced oxides[13].
Experimental Section The raw materials selected were Gd2O3 (99.99%), Al2O3 (99.99%), Ga2O3 (99.99%), and Cr2O3 (99.99%).
[9] Chen L, Lin C, YehC, Liu R, Light converting inorganic phosphors for white light emitting diodes, Materials. 2010,3, 2172-2195
So the adapted blue LED package produces white light garnet phosphors dominate Gd3Al4GaO12 which is a novel and highly stable material in the matrix of many luminescent materials[10,11,12].
Compared with the commonly used garnet, Synthetic raw materials are low-priced oxides[13].
Experimental Section The raw materials selected were Gd2O3 (99.99%), Al2O3 (99.99%), Ga2O3 (99.99%), and Cr2O3 (99.99%).
[9] Chen L, Lin C, YehC, Liu R, Light converting inorganic phosphors for white light emitting diodes, Materials. 2010,3, 2172-2195
Online since: December 2010
Authors: Zhe Zhang, Zi Hua Guo
Erection of Pearl Bridge by Bear Angle Vertical Swivel Method
Zihua Guo1, a, Zhe Zhang2,b
1 The Design Institute of Civil Engineering and Architecture of DUT, Dalian 116023, China
2 Institute of Bridge Engineering, Dalian University of Technology, Dalian, 116024, China.
aguozh_1979@163.com, bzhangzhe@dlut.edu.cn Key words: Pearl bridge; Bear Angle Vertical Swivel; Construction; Arch Bridge; China Abstract.
This method has the following properties: saving construction materials, reducing construction equipments, constructed rapidly and safely, not influencing navigation and not interrupting traffic, etc.
aguozh_1979@163.com, bzhangzhe@dlut.edu.cn Key words: Pearl bridge; Bear Angle Vertical Swivel; Construction; Arch Bridge; China Abstract.
This method has the following properties: saving construction materials, reducing construction equipments, constructed rapidly and safely, not influencing navigation and not interrupting traffic, etc.
Online since: October 2011
Authors: Ya Feng Li, Jia Yuan Liu, Yan Zhang
Startup of Denitrification Bioreactor and Influence of Temperature and DO for Treatment
Yafeng Li1, a, Jiayuan Liu2,b and Yan Zhang3,c
1.2.3Municipal and Environmental Engineering School of Shenyang Jianzhu University
Shenyang, China
ayafengli88@sina.com, bjiayuan5335@163.com, c747176778@qq.com
Keywords: COD;nitrogen remove; temperature; DO; effect factors .
Materials and methods A.
The temperature of simulation sewage is 30˚C, DO is at the range of 0.3-0.5mg/L, pH value is 8, to simulate the start operation of practical engineering at a certain extent.
The essence of biological wastewater treatment is the use of enzymatic and biochemical reactions in micro-organisms’ body to achieve the degradation of organic matter, so the types and quantities of enzyme in their body is the key point to decide whether the bioreactor can play processing performance.
Materials and methods A.
The temperature of simulation sewage is 30˚C, DO is at the range of 0.3-0.5mg/L, pH value is 8, to simulate the start operation of practical engineering at a certain extent.
The essence of biological wastewater treatment is the use of enzymatic and biochemical reactions in micro-organisms’ body to achieve the degradation of organic matter, so the types and quantities of enzyme in their body is the key point to decide whether the bioreactor can play processing performance.
Online since: September 2011
Authors: Jing Jing Yuan, Hong Sheng Qiu, Shu Guang Liu, Xiao Min Huang
The material properties are listed as table 2:
Table 2 Material parameters of the structure
The main parts of the overpass(Q370 and Q345)
Stayed-Cables
Elastic modulus(MPa)
210
195
Poisson ratio
0.3
0.3
Coefficient of linear expansion
Therefore, combining with the structure characteristics, the car overpass FEA model of whole bridge has been built by spatial plate beam method in ANSYS.
Vol.6(2009), p.71 [2] Jingjing Yuan,Hongsheng Qiu, Shuguang Liu, Xiaoming Huang, “ The Study on Selection of Urban Car Overpass”, in Key Technologies of Railway Engineering ICRE2010, Beijing, China, pp.746-751,2010 [3] Zehan Jiang, Shuguo Zhou, Ping Lu: Vibration, Measurement & Diagnosis.
Vol.2(1992), p.20 [4] Ju Yan-zhong, Zhou Guan-nan, Bai Jun-feng, “Finite Element Analysis and Test Study of Dynamic Behavior of Single-tower and Double-face Cable-stayed Bridge”, in 2010 International Conference on Mechanic Automation and Control Engineering, MACE2010, Wuhan, China, pp.2814-2817 [5] Xiaoxin Ma, Renda Zhao: Sichuan Architecture.
Vol.6(2009), p.71 [2] Jingjing Yuan,Hongsheng Qiu, Shuguang Liu, Xiaoming Huang, “ The Study on Selection of Urban Car Overpass”, in Key Technologies of Railway Engineering ICRE2010, Beijing, China, pp.746-751,2010 [3] Zehan Jiang, Shuguo Zhou, Ping Lu: Vibration, Measurement & Diagnosis.
Vol.2(1992), p.20 [4] Ju Yan-zhong, Zhou Guan-nan, Bai Jun-feng, “Finite Element Analysis and Test Study of Dynamic Behavior of Single-tower and Double-face Cable-stayed Bridge”, in 2010 International Conference on Mechanic Automation and Control Engineering, MACE2010, Wuhan, China, pp.2814-2817 [5] Xiaoxin Ma, Renda Zhao: Sichuan Architecture.
Online since: December 2013
Authors: Ibragim Suleimenov, Grigoriy Mun, Polina Obukhova, Sergei Panchenko
The Impact of Ion Exchange on Nature of Polyacrylic Acid and Nonionic Polymer Complex Formation
Ibragim Suleimenov1, a, Grigoriy Mun2, b, Sergei Panchenko2, c, Polina Obukhova3, d
1Almaty University of Power Engineering and Telecommunications, Baitursynova Str.126, Almaty, 050013, Kazakhstan
2Al-Farabi Kazakh National University, Al-Farabi av. 71, Almaty, 050038 Kazakhstan
3Satpayev Kazakh National Technical University, 22 Satpayev str.,050013 Kazakhstan
aesenych@yandex.ru, bmungrig@yandex.ru, cserj129@gmail.com, dpolina055@mail.ru
Keywords: Hydrogen bonding; Hydrophobic interactions; Interpolymer complexes; Non-ionic polymers; Ion exchange
Abstract.
Interest in using these materials for biomedical purposes has already been established, particularly in drug delivery systems [10-12].
The key factor is the high sensitivity of reaction history to external conditions, i.e. mechanism of self-organization processes is often related with local changing of substance under low fluctuations of control parameters, which are also local (for instance local phase transition).
Bryant, BIOMATERIALS: Where We Have Been and Where We are Going, Annual Review of Biomedical Engineering, Vol. 6 (2004), p. 41-75 [7] Guro E.
Interest in using these materials for biomedical purposes has already been established, particularly in drug delivery systems [10-12].
The key factor is the high sensitivity of reaction history to external conditions, i.e. mechanism of self-organization processes is often related with local changing of substance under low fluctuations of control parameters, which are also local (for instance local phase transition).
Bryant, BIOMATERIALS: Where We Have Been and Where We are Going, Annual Review of Biomedical Engineering, Vol. 6 (2004), p. 41-75 [7] Guro E.