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| 1 | The Use of Fractal for Prediction of Burning Rate of Composite Solid Propellants显示文摘By using the fractal geometry it is possible to calculate the actual AP (Ammonium Perchlorate) surface area and oxidizer-binder interface fractal dimension in the prediction of burning rate of composite solid propellants. In this investigation, the fractal dimension was determined by a procedure known as the 'Box Counting Method'. Using this dimension, surface area relations were developed for the rough particles. This method was implemented in the PEM (Petite Ensemble Model) burning rate model. The comparison of burning rates for a typical propellant by the PEM and fractal model shows that the burning rates obtained by using the fractal geometry are slightly less than those obtained by the PEM model. | Manouchehr Nikazar,Mohammad B. Bagherpour,Bahram Dabir (Chem. Eng. Dept., Amirkabir University of Technology (Tehran Polytechnic), No.424, Hafez Ave., Tehran, Iran.) | 2000 | Journal of Thermal Science2000,9,4: | 2 |
| 2 | 基于ANSYS的10 MW风力机叶片弯扭耦合特性研究显示文摘为分析弯扭耦合效应对大型风力机叶片气动性能的影响。文中使用三维有限元软件ANSYS建立了10 MW复合材料风力机叶片模型,通过改变梁帽位置单轴向布的铺层角度在叶片中引入弯扭耦合效应,改变铺层角度和耦合区域,分析叶片在气动载荷作用下的变形情况。结果表明:叶片在弯扭耦合作用下产生弯曲变形的同时会发生扭转变形,沿叶片展向变形量增加;该叶片可达到的最大扭转变形量为6度;弯扭耦合系数随着铺层角度的增大而减小。 | 王子文 杨涛 Vasilis Riziotis Giannis Seferain Tohid Bagherpour | 2019 | 应用能源技术2019,0,6: | 2 |
| 3 | Study of body image in fertile and infertile men 显示文摘 | Akhondi MM Dadkhah A Bagherpour A | 2011 | J Re- prod Infertil2011,12,4: | 1 |
| 4 | Designing a control mechanism using earned value analysis: an application to production environment显示文摘 | Morteza Bagherpour | 2010 | The International Journal of Advanced Manufacturing Technology2010,,49: | 1 |
| 5 | On the achievement of uniform particle distribution in metal matrix composites fabricated by accumulative roll bonding显示文摘 | M. Reihanian E. Bagherpour M.H. Paydar | 2013 | Materials Letters2013,,: | 1 |
| 6 | A new approach for solving fuzzy critical path problem using analysis of events显示文摘 | Zareei A Zaerpour F Bagherpour M | 2011 | Expert Systems with Applications2011,38,1: | 1 |
| 7 | Application of risk analysis within value management: A case study in dam engineering 显示文摘 | ROHANINEJAD M BAGHERPOUR M | 2013 | Journal of Civil Engineering and Management2013,19,3: | 1 |
| 8 | Equal channel angular pressing- forward extrusion (ECAP-FE) consolidation of AI particles显示文摘 | PAYDAR M H REIHANIAN M BAGHERPOUR E SHARIFZADEH M ZARINEJAD M DEAN T A | 2009 | Materials & Design2009,30,3: | 1 |
| 9 | A new approach for solving fuzzy critical path problem using analysis of events显示文摘 | Zareei A Zaerpour F Bagherpour M | | 0,,01: | 1 |
| 10 | Droplet sizing and velocimetry in the wake of rotary-cage Atomizers 显示文摘 | Bagherpour A McLeod IM Holloway A G L | 2012 | Transactions of the ASABE2012,55,3: | 1 |
| 11 | Designing a control mechanism using earned value analysis:an application to production environment显示文摘 | Morteza Bagherpour Abalfazl Zareei Siamak Noori | | 0,,5: | 1 |
| 12 | A new approach for solving fuzzy critical path problem using analysis of events显示文摘 | Zareei A Zaerpour F Bagherpour M | 2011 | Expert Systems with Applications2011,38,1: | 1 |
| 13 | Dental age assessment of young Iranian adults using third molars: A multivariate regression study显示文摘 | Bagherpour A Anbiaee N Partovi P | 2012 | J Forensic Leg Med2012,19,7: | 1 |
| 14 | Stable energy-efficient position-based multicast routing (SE2PBM)显示文摘 | BAGHERPOUR SEPEHRI M M | | 0,,: | 1 |
| 15 | Effect of maternal undernutrition on vascular expression of micro and messenger RNA in newborn and aging offspring显示文摘 | Khorram O Han G Bagherpour R | | 0,,: | 1 |
| 16 | Effects of concentrated HC1 on the mechanical properties of storage aged fiber glass polyester composite显示文摘 | Salar Bagherpour Roholah Bagheri Abroad Saatchi | 2009 | Materials and Design2009,30,2: | 1 |
| 17 | Effect of maternalundernutrition on vascular expression of micro and messen-ger RNA in newborn and aging offspring显示文摘 | Khorram O Han G Bagherpour R | 2010 | Am J PhysiolRegul Integr Comp Physiol2010,298,5: | 1 |
| 18 | Cone-beam comput- ed tomography evaluation of maxillary first and second molars in Iranian population: a morphological study 显示文摘 | Rouhani A Bagherpour A Akbari M | 2014 | Iran Endod J2014,9,3: | 1 |
| 19 | Development of 2D computer program to determine geometry of rock mass blocks显示文摘Due to various geological processes such as tectonic activities fractures might be created in rock mass body which causes creation of blocks with different shapes and sizes in the rock body. Exact understanding of these blocks geometry is an essential issue concerned in different domains of rock engineering such as support system of underground spaces built in jointed rock masses, design of blasting pattern, optimization of fragmentation, determination of cube blocks in quarry mines, blocks stability, etc. The aim of this paper is to develop a computer program to determine geometry of rock mass blocks in two dimensional spaces. In this article, the geometry of jointed rock mass is programmed in MATLABTM. | Yarahmadi Reza Bagherpour Raheb Kakaie Reza Mirzaie N. Hossein Yari Mojtaba | 2014 | International Journal of Mining Science and Technology2014,24,2: | 0 |
| 20 | Investigation of thermal behavior of energetic and non-energetic binders on luminous efficiency of high performance miniature flares显示文摘Miniature flares containing magnesium/sodium nitrate compounded with different binders were studied for increasing luminosity and luminous efficiency in various fuel oxidizer ratio and flare diameters.Unsaturated polyester, Bisphenol-A epoxy resin, calcium resinate, and nitrocellulose were used as binders for construction the flares. Experimental results showed that luminous efficiency was higher for polyester based flares. Due to the difference in decomposition progress of various binders and the exothermic reaction between binder and oxidizer the luminous efficiency of the mixtures were 31000,28900, 27800 and 25100 cd respectively for polyester, epoxy, calcium resinate, and nitrocellulose. It was found that nitrocellulose as an energetic binder produces the highest light intensity in comparison to other binders, but the burning rate is higher and the burning time is lower than the other binders.Thermal analysis of four binders showed that the heat of reactions was directly related to the amount of light output and luminosity. | Saeid Bagherpour Mohammad Mahdavi Ebrahim Abedini | 2019 | Defence Technology(防务技术)2019,15,2: | 0 |