ORIGINAL_ARTICLE
Vibration Analysis of Timoshenko Beam reinforced with Boron-Nitride Nanotube on Elastic Bed
In this paper, free vibration analysis of a polymer-based nano-composite beam reinforced by boron-nitride nanotubes and subjected on elastic foundation, is studied. Smooth and defect-free nanotubes with uniform and directly- orientated in matrix are intended. Also, nanotubes’ distribution in the thickness direction of beam is regarded as a uniform distribution of the three different targeted ones. The properties of nano-beam are obtained by using a micromechanical model. The governing equations based on Timoshenko beam theory are derived by using the Hamilton principle. The equations are solved by the extended differential Quadrature and the natural frequencies are obtained. The effect of various parameters such as volume fraction of nanotubes, carbon-nanotube (CNT) distribution in the thickness direction of the beam, elastic media, boundary conditions and the aspect ratio is investigated on the natural frequency. The results show that a change on these parameters has a significant impact on the natural frequency.
http://jsme.iaukhsh.ac.ir/article_516003_87cc33f08c24420c997903848c7582e7.pdf
2014-12-22
1
12
Boron nitride nanotube-reinforced composites
Timoshenko beam
quad-Richter differential method
the elastic substrate
Free vibration
I.
Abdolahi
1
MSc Student, Department of Mechanical Engineering, Razi University, Kermanshah, Iran.
AUTHOR
M.H.
Yas
yas@razi.ac.ir
2
Assistant Prof., Department of Mechanical Engineering, Razi University, Kermanshah, Iran.
LEAD_AUTHOR
[1]Zhi C., Bando Y., Tang C.,GolbergBoron, D., nitride nanotubes, Materials Science and Engineering, Vol. 70,2010, pp.92–111.
1
[2]Dolati S., Fereidoon A.,Kashyzadeh K.R., A Comparison Study between Boron nitride Nanotubes and Carbon Nanotubes, International Journal of Emerging Technology and Advanced Engineering ISSN 2250-2459, Vol. 2, Issue 10, 2012.
2
[3] Verma V.,Jindal V.K.,DharamvirK., Elastic moduli of a boron nitride nanotube, Nanotechnology,Vol. 18,2007, 435711 ,6pp.
3
[4] Golberg, D., Bando, Y.,Tang,C.,Zhi, C., Functional Boron Nitride Nanotubes, Materials Science and Engineering, Vol. 70,2010, pp. 92–111.
4
[5] TerronesM., Romo-HerreraJ. M., Cruz-SilvaE., López-UríasF., Muñoz-SandovalE., Velázquez-SalazarJ.J., TerronesH., BandoY., GolbergD., Pure and doped boron and nitride nanotubes, materialstoday, Vol. 10 ,No.5, 2007, pp.30-38.
5
[6]Zhi C.Y., Bando Y., Wang W.L., TangC.C., Kuwahara H., Golberg D., Mechanical and Thermal Properties of Polymethyl Methacrylate-BN Nanotube Composites, Journal of Nanomaterials, 2008, Article ID 642036, 5 pages.
6
[7]Yang J., ChenY., XiangY., JiaX.L., Free and forced vibration of crackedinhomogeneous beams under an axial force and a moving load, Journal of Sound andVibration, Vol. 312, pp.166-181.
7
[8]Ke L.L., Yang J., Kitipornchai S., Xiang Y., Flexural Vibration and Elastic Buckling of a Cracked Timoshenko Beam Made of Functionally Graded Materials. Mechanics of Advanced Materials and Structures, Vol. 16, 2009, pp. 488-502.
8
[9]YingJ., LuC.F., ChenW.Q., Two-dimensional elasticity solutions for functionallygraded beams resting on elastic foundations,Composite Structures,Vol. 84, No.3, 2008, pp. 209–219.
9
[10]YanT., KitipornchaiS., YangJ., QiaoH., Dynamic behaviour of edge-cracked sheardeformable functionally graded beams on an elastic foundation under a moving load,Composite Structures, Vol. 93,2011, pp.2992–3001.
10
[11] YasM.H., SamadiN., Free vibrations and buckling analysis of carbon nanotube-reinforced compositeTimoshenko beams on elastic foundation, International Journal of Pressure Vessels and Piping,Vol. 98 ,2012, pp.119-128.
11
[12]HeshmatiM., YasaM.H., Dynamic analysis of functionally graded multi-walled carbon nanotube-polystyrene nanocomposite beams subjected to multi-moving loads,Materials and Design,Vol. 49,2013, pp. 894–904.
12
[13]Mallick P.K., Fiber-reinforced composites:materials, manufacturing, and designbyTaylor & Francis Group, LLC, 2008.
13
[14]Reddy J.N., Mechanics of Laminated Composite Plates. CRC Press, New York,1997.
14
[15] ShuC., Differential Quadrature and Its Application in Engineering, Springer,Berlin, 2000.
15
[16]Atlihan G., ÇalliogluH., Free Vibration Analysis of the Laminated compositeBeams by Using DQM, Plastics and Composites, Vol. 28, 1998, pp.881-890.
16
ORIGINAL_ARTICLE
Investigation on Process Parameters of Ball Screw Finishing Using Magnetic Abrasive Field
Surface finishing is one of the most significant steps in industries which are engaged with surface quality. Finishing by magnetic field is a new method of surface finishing. In this process, machining is executed in mechanical way and semi-homogeneous abrasive slurry performs finishing of surfaces. Needed force to grind surfaces is made by magnetic field. Therefor this method is considered as an advanced machining method. One of application of advanced machining methods is working in situation which conventional methods are not applicable. Nowadays helical and spiral parts have an important position in industry. This result in more attention about manufacturing and finishing of parts. This mechanism is used to finish helical ball screw in CNC machine using magnetic field created by Nd-Fe-B permanent magnet. In executed experiments four parameters which affected on surface quality were investigated. These parameters included feed rate, particles size and amount of ferromagnetic particles. The effect of most parameters was positive and caused to improve surface quality, but generally each parameter had an optimum amount in which by reaching this amount, reducing in efficiency and surface quality was observed. Also, some parameters such as cutting speed had lower effect. The initial specimen had surface roughness of 1.017 µm and the best resultant surface quality was 0.325 µm.
http://jsme.iaukhsh.ac.ir/article_516004_d1af1478a92a9e1fc010449d8d926a89.pdf
2014-12-22
13
21
Magnet
Abrasive particles
Ferromagnetic particles
Surface finishing
helical ball screw
A.
Mohammadi
1
MSc Student, Department of Mechanical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
AUTHOR
A.H.
Azizi
ah.azizi@ilam.ac.ir
2
Assistant Prof., Department of Mechanical Engineering, Ilam University, Ilam, Iran
LEAD_AUTHOR
[1] جین وی.کی.، فرآیندهای پیشرفته ماشینکاری، ترجمهی بنی مصطفی عرب، فریور و فتحی. تهران: آزاده 1383.
1
[2]Shinmura T, Takazawa K., Hatano E.,Study on magnetic abrasive finishing. Ann CIRP, Vol. 39, 1990, pp. 325–328.
2
[3] Shinmura T., Yamaguchi H.,A new process for internal finishing of tube by the application of a new magnetic field, JSPE Journal, Vol. 38, No. 1, 1994, pp.15-18.
3
[4] Jain V.K., Kumar P., Behera P.K., Jayswal S.C., Effect of working gap and circumferential speed on the performance of magnetic abrasive finishing process, Wear, Vol. 250, 2001, pp. 384-390.
4
ORIGINAL_ARTICLE
Effect of Bed and Crack on the Natural Frequency for the Timoshenko Beam Using Finite Element Method
In this study, the natural frequencies and mode shapes of beams without cracks and cracked Timoshenko beams is calculated with different boundary conditions using finite element method. The energy method is used to solve the equations. Hardness and softness matrices for Timoshenko beam without crack are obtained by solving the potential and kinetic energy equations. Then for investigation of cracked condition, the cracked element stiffness matrix is used and the beam natural frequencies are obtained by entering the boundary conditions of the beam. After that the effect of bed is investigated by addition of it to the equations.
http://jsme.iaukhsh.ac.ir/article_516005_afdebd5e2fcc4c9811e4e9def5492f84.pdf
2014-12-22
23
33
FEM
Timoshenko beam
Crack
Bed of Beam
A.
Manuchehrifar
1
Assistant Prof., Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Isfahan, Iran
AUTHOR
S.F.
Abtahi
faridabtahi366@yahoo.com
2
MSc Student, Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Isfahan, Iran
LEAD_AUTHOR
[1] Gudmundsun, P., The Dynamic Behavior of Slender Structures with Cross-Sectional Cracks, Journal of Mechanics and Physics of Solids, Vol. 1, No. 4, 1983, pp. 329-345.
1
[2] Silva, J.M., Gomes, A.J., Experimental Dynamic Analysis of Cracked Free-free Beams, Journal of Experimental Mechanics, Vol. 30, No. 1, 1990, pp. 20-25.
2
[3] Qian, G.L., Gu, S.N., Jiang, J.S., The Dynamic Behavior and Crack Detection of a Beam with a Crack, Journal of Sound and Vibration, Vol. 138, No. 2, 1990, pp. 233-243.
3
[4] Pandey A.K., Biswas M., Damage Detection in Structures Using Changes in Flexibility, Journal of Sound and Vibration, Vol. 169, No. 1, 1994, pp. 3–17.
4
[5] Narkis Y., Identification of Crack Location in Vibrating Simply supported Beams, Journal of Sound and Vibration, Vol. 172, No. 4, 1994, pp. 549-558.
5
[6] Lele S.P., Maiti S.K., Modeling of Transverse Vibration of Short Beams for Crack Detection and Measurement of Crack Extension, Journal of Sound and Vibration, Vol. 257, No. 3, 2002, pp. 559-583.
6
[7] Kim J.T., Stubbs N., Crack Detection in Beam-Type Structures Using Frequency Data, Journal of Sound and Vibration, Vol. 259, No. 1, 2003, pp. 145-160.
7
[8] Lin, H. P., ‘‘Direct and Inverse Methods on Free Vibration Analysis of Simply Supported Beams with a Crack’’, Journal of Engineering Structures, Vol. 26, 2004, pp. 427-436.
8
[9] Swamidas A.S.J., Yang X.F., Seshadri R., Identification of Cracking in Beam Structures Using Timoshenko and Euler Formulations, Journal of Engineering Mechanics, Vol. 130, No. 11, 2004, pp. 1297-1308.
9
[10] Nahvi H., Jabbari M., Crack Detection in Beams Using Experimental Modal Data and Finite Element Method, Journal of Mechanical Science, Vol. 47, 2005, pp. 1477-1497.
10
[11] Vakili-Baghmisheh M., Peimani M., Homayoun Sadeghi M., Ettefagh M., Crack Detection in Beam Like Structures Using Genetic Algorithms, Journal of Applied Soft Computing, Vol. 8, 2008, pp. 1150-1160.
11
[12] Ariaei A., Ziaei-Rad S., Ghayour M., Vibration analysis of beams with open and breathing cracks subjected to moving masse, journal of sound and vibration, Vol. 326, 2009, pp. 709-724.
12
[13] Dimaragonas A.D., Vibration of cracked structures-A state of the art review, Engineering fracture mechanics, Vol. 55, 1996, pp.831-857.
13
[14] Hetenyi M., Beams on elastic foundation. The university of Michigan press, Ann Arbor, U.S.A, 1946.
14
[15] Chen Y., Huang Y., Shin E., Response of an in finite Timoshenko beam on a viscoelastic foundation to a harmonic moving loads, Journal of sound and vibration, Vol. 241, 2001, pp. 809-842.
15
]16[ چهارمحالیپور، ا.، نحوی، ح.، بررسی رفتار ارتعاشی تیرهای دارای ترک، دانشکده مکانیک، دانشگاه آزاد خمینیشهر، 1387.
16
ORIGINAL_ARTICLE
Investigation of Axial to Lateral Load ratio on the Buckling of Thin Orthotropic Cylindrical Shells
Buckling analysis of thin cylindrical shells is very important due to their production process. Usually longitudinal and transversal stiffeners are used to increase the buckling stiffness. In this paper, considering a thin cylindrical shell with longitudinal and transversal ribs subjected to axial force and lateral pressure, the influence of different aspect of axial force to lateral pressure on buckling load is investigated for different ratios such as thickness to radius and length to radius. The analytical results based on Donnell’s classical linear stability equations for anisotropic cylindrical shells are compared with FEM results of ANSYS software. The results show that the analytical method of Donnell can be used for special aspect ratios. Furthermore, by increasing the axial to lateral load ratio, the axial buckling load is increased for most of the aspect ratios, while the lateral buckling load decreases.
http://jsme.iaukhsh.ac.ir/article_516006_c79ffe3d275d0ff1b922abd6679a5188.pdf
2014-12-22
35
43
FEM
Cylindrical shells
Buckling
axial load to lateral pressure ratio
Orthotropic
M.
Esmaeil-Dokht
1
MSc Student, Department of Mechanical Engineering, Babol University of Technology, Mazandaran, Iran.
AUTHOR
R.A.
Alashti
raalashti@nit.ac.ir
2
Associate Prof., Department of Mechanical Engineering, Babol University of Technology, Mazandaran, Iran
LEAD_AUTHOR
M.H.
Ghasemi
3
Assistant Prof., Department of Mechanical Engineering, Babol University of Technology, Mazandaran, Iran
AUTHOR
M.
Dardel
4
Assistant Prof., Department of Mechanical Engineering, Babol University of Technology, Mazandaran, Iran
AUTHOR
[1] Kenny partners J.P., Buckling of Offshore Structural Components, Report of the UK Cohesive Buckling Research Programme, 1983-1985, London, 1992, p.259.
1
[2]آلمورث ب.، براشد.، کمانش میلهها، ورقها و پوستهها، ترجمه مجتبی قمری زاده و غلامحسین رحیمی، تهران: انتشارات دانشگاه امام حسین (ع)، 1383.
2
[3] Bai y., Marine structural design, Elsevier, 2003, Houston, America.
3
[4] SlizR., Chang M.Y., Reliable and accurate prediction of the experimental buckling of thin-walled cylindrical shell under an axial load, Thin-Walled Structures, Vol. 49, 2010,pp. 409-421.
4
[5] Iwicki P., Tejchman J., Chróścielewski J., Dynamic FE simulations of buckling process in thin-walled cylindrical metal silos, Thin-Walled Structures, Vol. 84, 2014, pp. 344-359.
5
[6] Rathinam N., Prabu B., Numerical study on influence of dent parameters on critical buckling pressure of thin cylindrical shell subjected to uniform lateral pressure, Thin-Walled Structures, Vol. 88, 2015, pp. 1-15.
6
[7] Sofiyev A., Kuruoglu N., Buckling analysis of nonhomogeneous orthotropic thin-walled truncated conical shells in large deformation, Thin-Walled Structures, Vol. 62, 2013, pp. 131-141,
7
[8] Yang L., Luo Y., Qiu T., Yang M., Zhou G., Xie G., An analytical method for the buckling analysis of cylindrical shells with non-axisymmetric thickness variations under external pressure, Thin-Walled Structures, Vol. 82, 2014, pp. 431-440.
8
[9] Pinna R., Buckling and collapse of cylinders with one end open and one end simply supported with varying axial restraint, International Journal of mechanical sciences, Vol. 46, 2004, pp. 541-559.
9
[10] Kim S.E., Buckling strength of the cylindrical shell and tank subjected to axially compressive loads, Thin-walled structures, Vol. 40, 2002, pp. 329-353.
10
[11] Baruch M., Singer J., Effect of Eccentricity of Stiffeners on the General Instability of Stiffened Cylindrical Shells under Hydrostatic pressure, Archive Journal of Mechanical Engineering Science, Vol. 5, No. 1, 1963, pp. 23-27.
11
[12] Singer J., Baruch M., Harari O., On the Stability of Eccentrically Stiffened Cylindrical Shells under Axial Compression,On the Stability of Eccentrically Stiffened Cylindrical Shells under Axial Compression, International Journal of Solids and Structures,Vol. 3, No. 1, 1967, pp. 445-470.
12
[13] FluggeW., Stresses in Shells,Second Edition, Springer, 1973, Verlag Berlin.
13
ORIGINAL_ARTICLE
Parameter Analysis and optimization of equal channel angular pressing extrusion for titanium alloy using Taguchi design of experiments method
In this paper the influence of different parameters on equal channel angular pressing (EADAP) of titanium alloy is investigated. In the first step the most important parameters are selected, and then a table of experiments is designed using Taguchi method. After designing the table of experiments, all of the experiments are simulated using Abacus software and the results are optimized using Taguchi method. The results shows that the optimum levels for ECAP method between the implemented experiments of titanium are 120 degrees for die channel, ambient temperature and 2 passes.
http://jsme.iaukhsh.ac.ir/article_516007_598af05d8a8072ac44607c1cc33680e5.pdf
2014-12-22
45
56
Extrusion
Equal channel angular pressing (ECAP)
FEM
Optimization
Taguchi Method
ABAQUS
H.
Khademizadeh
hkhademyza@cc.iut.ac.ir
1
Assistant Prof., Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Isfahan, Iran
AUTHOR
S.A.
Eftekhari
eftekhari@iukhsh.ac.ir
2
Assistant Prof., Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Isfahan, Iran
LEAD_AUTHOR
S.H.
Abtahi Froushani
3
MSc Student, Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Isfahan, Iran
AUTHOR
[1]Sanusi K.O., Makind O.D., Oliver G.J., Equal channel angular pressing technique for the formation of ultra-fine grained structures,South African Journal of Science, Vol. 108, No.9-10, 2012, pp.1-7.
1
[2]Zhao X., et al., The processing of pure titanium through multiple passes of ECAP at room temperature. Materials Science and EngineeringA,Vol. 527, No.23, 2010, pp. 6335-6339.
2
[3]Zhang Y., Structure and mechanical properties of commercial purity titanium processed by ECAP at room temperature, Materials Science and Engineering: A, Vol. 528, No.25–26, 2011, pp. 7708-7714.
3
[4]Czerwinski A., et al, The Influence of Temporary Hydrogenation on Ecap Formability and Low Cycle Fatigue Life of Cp Titanium, Journal of Alloys and Compounds, Vol. 509, 2011.
4
[5]عباسی ع.، بررسی تولید مواد با استحکام بالا در فرآیند فشرده سازی در کانال های هم مقطع زاویه دار به کمک شبیه سازی سه بعدی، فصلنامه فرایندهای نوین ساخت و تولید، شماره 4، 1389،ص 6.
5
[6]Zhao, X., Processing of commercial purity titanium by ECAP using a 90 degrees die at room temperature, Materials Science and Engineering A,Vol. 607, No.10, 2014, pp. 904-907.
6
[7]ابراهیمی، فرآیند اکستروژن در کانالهای هم مقطع زاویه دار، شبیه سازی فرآیند وبررسی تاثیر نوع مسیر در کرنش و یکنواختی آن, کنفرانسملی مهندسی ساخت و تولید دانشگاه آزاد اسلامی واحد نجف آباد1386: دانشگاه آزاد اسلامی واحد نجف آباد.
7
[8]Valiev R.Z., Langdon T.G., Principles of equal-channel angular pressing as a processing tool for grain refinement. Progress in Materials Science, Vol. 51, No. 7, 2006, pp. 881-981.
8
[9]Sordi V.L., Ferrante M., Kawasaki M., Langdon T.G.,Microstructure and tensile strength of grade 2 titanium processed by equal-channel angular pressing and by rolling, Journal of Materials Science, Vol. 47, No.22, 2012, pp.7870-7876.
9
[10]Figueiredo R.B., Cetlin P.R., Langdon T.G., The processing of difficult-to-work alloys by ECAP with an emphasis on magnesium alloys. Acta Materialia,. Vol. 55, No.14, 2007, pp. 4769-4779.
10
[11]Yamashita A., et al., Influence of pressing temperature on microstructural development in equal-channel angularpressing. Materials Science and Engineering A, Vol. 287, No.1, 2000, pp.100-106.
11
[12]Stolyarov V.V., et al., A two step SPD processing of ultrafine-grained titanium. Nanostructured Materials, Vol. 11, No.7, 1999, pp. 947-954.
12
[13]Fan G.D., et al., Effect of heat treatment on internal friction in ECAP processed commercial pure Mg. Journal of Alloysand Compounds, Vol. 549, No. 10, , 2013, pp. 38-45.
13
[14]Chuvil’deev V.N., et al., Low-temperature superplasticity and internal friction in microcrystalline Mg alloys processed by ECAP, Scripta Materialia, Vol. 50, No.6, 2004, pp. 861-865.
14
[15]Kang F., et al., Finite elementanalysis of the effect of back pressure during equal channel angular pressing. Journal of Materials Science, Vol. 42, No.5, 2007, pp. 1491-1500.
15
[16]Djavanroodi F., EbrahimiM., Effect of die channel angle, friction and back pressure in the equal channel angular pressing using 3D finite element simulation, Materials Science and EngineeringA, Vol. 527, No.4–5, 2010, pp. 1230-1235.
16
[17]Ribbe J., et al., Effect of back pressure during equal-channel angular pressing on deformation-induced porosity in copper, Scripta Materialia,. Vol. 68, No.12, 2013, pp. 925-928.
17
[18]Chung M.-K., et al., Effect of the number of ECAP pass time on the electrochemical properties of 1050 Al alloys, Materials Science and Engineering A,. Vol. 366, No.2, 2004, pp. 282-291.
18
[19]Kim I., et al., Effects of equalchannel angular pressing temperature on deformation structures of pure Ti, Materials Science and Engineering: A,Vol. 342, No.1–2, 2003, pp. 302-310.
19
[20]Kim I., et al., Deformation structures of pure Ti produced by equal channel angular pressing, Scripta Materialia,Vol. 45, No.5, 2001, pp. 575-580.
20
[21]Chen F.K., Stamping formability of pure titanium sheets, Journal of Materials Processing Technology, Vol. 170, 2005, pp. 181-186.
21
ORIGINAL_ARTICLE
Analysis and Simulation of the Effect of Turbine Inlet Temperature on Thermodynamic Performance of the Water – Ammonia Combined Cycle
Due to the importance of power generation cycles including combined cycle, many studies have been done in recent years and many researchers have been tried to optimize these cycles by using of existing methods. In this study, the Water-Ammonia cycle is investigated in the combined-cycle of the Water-Ammonia, working dual Water-Ammonia mixture is used as the works fluid. This cycle can be used from different sources such as typical power dissipation of energy cycles or independent heat source that used from solar energy or geothermal.
The aim of this paper is the investigation of the inlet temperature on thermodynamic performance of the Water-Ammonia combined cycle. In this research, at first, the Ammonia-Water cycle can be modeled with by using of EES software and then the Rankine-thermodynamic gas combined cycle is simulated. Also, the results are studied from the perspective of the first and second law of thermodynamics. Finally, the effect of turbine inlet temperature into the thermodynamic performance is discussed.
http://jsme.iaukhsh.ac.ir/article_516008_0944028658df62174d3b313c143ca5a3.pdf
2014-12-22
57
65
Cycle
gas turbine
Compressor
Single-Axis
Two Axis
S.
Mohtaram
1
MSc Student, Department of Mechanical Engineering, Yazd Branch, Islamic Azad University, Yazd, Iran.
LEAD_AUTHOR
S.A.
Agha-Mirjalili
2
Assistant Prof., Department of Mechanical Engineering, Yazd Branch, Islamic Azad University, Yazd, Iran
AUTHOR
A.R.
Faghih khorasani
3
Assistant Prof., Department of Mechanical Engineering, Yazd University, Yazd, Iran.
AUTHOR
[1] El-Sayed Y.M., Tribus M., A Theoretical comparison of the Rankine and Kalina Cycle, ASME publication AES, Vol. 1, 1985, pp. 97–102.
1
[2] El-Sayed, Y.M., Tribus M., Thermodynamic properties of Water-Ammonia Mixtures Theoretical Implementation for Use in power Cycles Analysis, ASME publication AES, Vol. l, 1985, pp. 89-95.
2
[3] lsson E.K., et al, Analysis of Kalina Cycle Designs, International Gas Turbine &Aeroengine Congress & Exposition, May 1993.
3
[4] Haar L., Gallagher J.S., Thermodynamic properties of Ammonia, J. Phys. Chem. Ref. Data, Vol. 7, No. 30, 1978, pp.635-792.
4
[5] Ishida M., Kawamura K., Energy and exergy analysis of a chemical process system with distributed parameters based on the energy-direction factor diagram, Industrial and Engineering Chemistry Process Design and Development, Vol. 21, No. 4, 1982, pp. 690-695.
5
[6] Ishida M., ZhengD., Graphic exergy analysis of chemical process systems by a graphic simulator, GSCHEMER, Computers and Chemical Engineering, Vol.10, No. 6, 1986, pp. 525-532.
6
[7] Ishida M., Zheng D., Akehata T., Evaluation of chermical-loopingcombustion power – generation system by graphic exergy analysis, Energy, Vol. 12, No. 2, 1987, pp. 147-154.
7
[8] Kalina A.L., Combined Cycle system with Novel Bottoming Cycle, ASME Journal of Engineering for power,Vol. 106, No. 4, 1984, pp. 737-742.
8
[9] Kalina A.L., Tribus M., El-Sayed Y.M., A Theoretical Approach to the Thermodynamic properties of Two-Miscible-Component Mixtures for the purpose of power-Cycle Analysis, presented at the Winter Annual Meeting, ASME, Anaheim, California, December 7-12, 1986, publication No. 86-WA/HT-54.
9
[10] Keenan J.H., Keyes F.G., Hill P.C., Moore, J.G., 1969, Steam Tables, John Wiley and Sons, Inc., New York.
10
[11] Reynolds W.C., Thermodynamic properties in SI- graphs, tables and computational equations for 40 substances, Department of Mechanical Engineering, Stanford University, Sanford, CA 1980, 94305.
11
[12] Jurgen R.K.,The promise of the Kalina cycle,IEEE Spectrum (United States), Vol. 23, 1986, PP.68–69.
12
[13] Marstone C.H., 1990, Parametric Analysis of the kalina Cycle, Journal of Engineering For Gas turbines & Power, Vol. 112, No.1, 1990, pp.107-116.
13
ORIGINAL_ARTICLE
Study of The Effect of Hole Location on Stress Analysis of a Plate Subjected to Uni-axial Load by Using Numerical and Exact Solution
In the present study, stress analysis and explicit solution of rectangular plate with arbitrarily located circular hole, subjected to linear normal stresses on two opposite edges, has been investigated. Airy function and hoop stresses occurring at the edge of the circular have been computed. In this method 2D dimension elasticity and Airy stress function was used. The present method for explicit solution and finding airy stress function are stronger and simpler than prior methods. By using Stress function, the stress distribution around circular hole were calculated. By using obtained airy stress relation the stress distribution around the circle was obtained, plotted and compared with distribution of stress (computed by finite element method in Abaqus). This comparison shows the accuracy of this solution method. It has been observed that stress distribution of stress function is independent from hole location and only depends on the hole's size.
http://jsme.iaukhsh.ac.ir/article_516009_d88a21c99e60688d9140221dcbbafa6d.pdf
2014-12-22
65
72
A.
Bakhshae
1
MSc Student, Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Isfahan, Iran
AUTHOR
M.
Hashemian
mohamad.hashemian@gmail.com
2
Assistant Prof., Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Isfahan, Iran
LEAD_AUTHOR
[1] Zhong H,YuT., A weak form quadrature element method for plane elasticity problems, Applied Mathematics Modeling, Vol. 33,2009,pp. 3801–3814.
1
[2] ZhangT., LiuT.G., ZhaoY., LiuJ.X., Analysis of stress field of finite plates weakened by holes,Journal of Huazhong University Science Technology,Vol. 30, 2002, pp.87–89.
2
[3] LiQ., ShenS., HanZ.D., AtluriS.N., Application of Meshless Local Petrov-Galerkin (MLPG) to Problems with Singularities, and Material Discontinuities, in 3-D Elasticity CMES, Computer Modeling inEngineeringand Sciences,Vol. 4, No. 5, 2003,pp.571–586.
3
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ORIGINAL_ARTICLE
Investigation and Simulation of Wire Non-Asymmetric Rolling Process
The non-asymmetric rolling process of copper and brass wire has been simulated with the Abaqus software. Presented finite element model in this simulation of rolling predicted output curvature and contact surface width in the non-asymmetric mode (in equality of diameter of rollers, the rotational speed of the rollers and the rollers’ surface finish). The material used in this research has strain hardening property. To evaluate of this study, obtained results are compared with analytical results of other researchers. Comparing the good coincidence of these two methods.
http://jsme.iaukhsh.ac.ir/article_516010_9dae7856d0c5fbb4c36805ea513eb36d.pdf
2014-12-22
73
82
Wire Non-Asymmetric rolling
diameter of the rollers
curvature output
contact surface width
rolling force
A.
Parvizi
aliparvizi@ut.ac.ir
1
Assistant Prof., Department of Mechanical Engineering, Tehran University, Tehran, Iran
LEAD_AUTHOR
B.
Pasudeh
2
MSc Student, Department of Mechanical Engineering Tehran University, Tehran, Iran
AUTHOR
K.
Abrinia
3
Professor, Department of Mechanical Engineering, Tehran University, Tehran, Iran.
AUTHOR
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2
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3
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