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| 1 | Three-dimensional FDEM numerical simulation of failure processes observed in Opalinus Clay laboratory samples显示文摘This study presents the first step of a research project that aims at using a three-dimensional(3D) hybrid finite-discrete element method(FDEM) to investigate the development of an excavation damaged zone(EDZ) around tunnels in a clay shale formation known as Opalinus Clay. The 3D FDEM was first calibrated against standard laboratory experiments, including Brazilian disc test and uniaxial compression test. The effect of increasing confining pressure on the mechanical response and fracture propagation of the rock was quantified under triaxial compression tests. Polyaxial(or true triaxial) simulations highlighted the effect of the intermediate principal stress(s2) on fracture directions in the model: as the intermediate principal stress increased, fractures tended to align in the direction parallel to the plane defined by the major and intermediate principal stresses. The peak strength was also shown to vary with changing σ2. | Omid Mahabadi Patrick Kaifosh Paul Marschall Tim Vietor | 2014 | Journal of Rock Mechanics and Geotechnical Engineering2014，6，6： | 10 |
| 2 | Numerical simulation of hydraulic fracturing and associated microseismicity using finite-discrete element method显示文摘Hydraulic fracturing(HF) technique has been extensively used for the exploitation of unconventional oil and gas reservoirs. HF enhances the connectivity of less permeable oil and gas-bearing rock formations by fluid injection, which creates an interconnected fracture network and increases the hydrocarbon production. Meanwhile, microseismic(MS) monitoring is one of the most effective approaches to evaluate such stimulation process. In this paper, the combined finite-discrete element method(FDEM) is adopted to numerically simulate HF and associated MS. Several post-processing tools, including frequency-magnitude distribution(b-value), fractal dimension(D-value), and seismic events clustering,are utilized to interpret numerical results. A non-parametric clustering algorithm designed specifically for FDEM is used to reduce the mesh dependency and extract more realistic seismic information.Simulation results indicated that at the local scale, the HF process tends to propagate following the rock mass discontinuities; while at the reservoir scale, it tends to develop in the direction parallel to the maximum in-situ stress. | Qi Zhao Andrea Lisjak Omid Mahabadi Qinya Liu Giovanni Grasselli | 2014 | Journal of Rock Mechanics and Geotechnical Engineering2014，6，6： | 8 |
| 3 | Pericardial Fat, Visceral Abdominal Fat, Cardiovascular Disease Risk Factors, and Vascular Calcification in a Community-Based Sample: The Framingham Heart Study显示文摘 | Guido A. Rosito Joseph M. Massaro Udo Hoffmann Frederick L. Ruberg Amir A. Mahabadi Ramachandran S. Vasan Christopher J. O’Donnell Caroline S. Fox | 2008 | Circulation2008，，5： | 2 |
| 4 | Association of epicardial fht with cardiovascular risk factors and incident myocardial infarction in the general population: the Heinz Nixdorf Recall Study显示文摘 | Mahabadi AA Berg MH Lehmann N | 2013 | J Am Coil Cardiol2013，61，13： | 1 |
| 5 | Safety, efficacy, and indica- tions of beta-adrenergic receptor blockade to reduce heart rate prior to coronary CT angiography 显示文摘 | Mahabadi AA Achenbach S Burgstahler C | | Radiology0，257，51： | 1 |
| 6 | Association of pericardial fat, intrathoraeic fat, and visceral abdominal fat with cardiovascular disease burden: the Framingham heart study显示文摘 | Mahabadi AA Massaro JM Rosito GA e: al | 2009 | Eur Heart J2009，30，7： | 1 |
| 7 | Association of pericar- dial fat, intrathoracic fat, and visceral abdominal fat with cardiovascu- lar disease burden: the Framingham Heart Study显示文摘 | Mahabadi A A Massaro J M Rosito G A | 2009 | Eur Heart J2009，30，7： | 1 |
| 8 | Identification and characterization of auto-anti-idiotypic antibodies specific for antibodies against porcine reproductive and repiratory syndrome virus envelope glycoprotein (GP5) 显示文摘 | JIANG Zhengjun Zhou En-Min Mehrdad Ameri Mahabadi | 2003 | Vet Immunol Immunopathol2003，92，： | 1 |
| 9 | Increased discor-dance between HeartScore and coronary artery calcification scoreafter introduction of the new ESC prevention guidelines显示文摘 | Diederichsen AC Mahabadi A A Gerke O | 2015 | Atherosclerosis2015，239，： | 1 |
| 10 | Soil cadmium stabilization using an Iranian natural zeolite显示文摘 | ANSARI MAHABADI A HAJABBASI M A KHADEMI H | 2007 | Geoderma2007，137，： | 1 |
| 11 | Identification and characterization of auto-anti-idiotypic antibodies specific for antibodies against porcine reproductive and respiratory syndrome virus envelope glycoprotein(GPS)显示文摘 | JIANG Zheng-jun ZHOU En-min AMERI MAHABADI M | 2003 | Vet Immunol Immunopathol2003，92，12： | 1 |
| 12 | Y-Geo:A new combined finite-discrete element numerical code for geomechanical applications显示文摘 | MAHABADI O K LISJAK A MUNJIZA A | 2012 | International Journal of Geomechanics2012，12，6： | 1 |
| 13 | Soil cadmium stabilization using an Iranian natural zeolite显示文摘 | A. Ansari Mahabadi M.A. Hajabbasi H. Khademi H. Kazemian | 2006 | Geoderma2006，，3： | 1 |
| 14 | Association of pericardial fat,intrathoracic fat,and visceral abdominal fat with cardiovascular disease burden: the Framingham Heart Study显示文摘 | Mahabadi AA Massaro JM Rosito GA | 2009 | Eur Heart J2009，30，7： | 1 |
| 15 | Association of pericardialfat,intrathoracic fat,and visceral abdominal fat with cardiovasculardisease burden:the FraminghamHeart Study显示文摘 | Mahabadi AA Massaro JM Rosito GA | 2009 | Eur Heart J2009，30，7： | 1 |
| 16 | Accuracy of MDCT in the determination of supraaortic artery stenosis using DSA as the reference standard显示文摘 | Toepker M Mahabadi AA Heinzle G | 2011 | Eur J Radiol2011，80，3： | 1 |
| 17 | Safety,efficacy, and indications of beta-adrenergic receptor blockade to reduce heart rate prior to coronary CT angiography显示文摘 | Mahabadi AA Achenbach S Burgstahler C | 2010 | Radiology2010，257，3： | 1 |
| 18 | Association of pericardial fat, intrathoracic fat, and visceral abdominal fat with cardiovascular disease burden: the Framingham Heart Study显示文摘 | Mahabadi A A Massaro J M Rosito G A | 2009 | Eur Heart J2009，30，7： | 1 |
| 19 | Simple area-based measurement for multidetector computed tomography to predict left ventricular size显示文摘 | Schlett CL Kwait DC Mahabadi AA | 2010 | Eur Radiol2010，20，7： | 1 |
| 20 | Accuracu of MDCT in the determination of supraaortic artery stenosis using DSA as the reference standard显示文摘 | Toepker M Mahabadi AA Heinzle G | 2011 | Eur J Radiol2011，80，3： | 1 |
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