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| 1 | HYDRODYNAMIC AND ELASTOHYDRODYNAMIC STUDIES OF A CYLINDRICAL JOURNAL BEARING显示文摘In this article,the effect of the bearing elastic deformation on the performance characteristics of a cylindrical journal bearing is analyzed.The variety of simulation models covers hydrodynamic(HD) and elastohydrodynamic(EHD) lubrication theories.The Reynolds equations governing the flow in the clearance space of the journal bearing are obtained by considering the effect of mass transfer across the fluid film.The finite element method with an iteration scheme was employed to solve both the Reynolds equation and the three-dimensional elasticity equation representing the displacement field in the bearing shell.The converged solutions for the lubricant flow and elastic deformation vector are obtained.Dynamic characteristics of the journal bearing are computed for HD and EHD theories.Numerical simulation results show that the flexibility of bearing liner has a significant influence on the performance of a cylindrical journal bearing.Indeed,the elastic deformations of the bearing liner extend the pressure area in the bearing and increase the minimum film thickness.Although,dynamic coefficient,load capacity and attitude angle decrease. | ATTIA HILI Molka BOUAZIZ Slim MAATAR Mohamed FAKHFAKH Tahar HADDAR Mohamed | 2010 | Journal of Hydrodynamics2010，22，2： | 12 |
| 2 | Analytical modelling of spur gear tooth crack and influence on gearmesh stiffness显示文摘 | Fakher Chaari Tahar Fakhfakh Mohamed Haddar | 2008 | European Journal of Mechanics / A Solids2008，，3： | 3 |
| 3 | A Challenging Approach to Improve the Low Affinity of Acrylic Fibres to Be Successfully Dyed with a Bio-Colorant Extracted from Grape Marc显示文摘Acrylic fibres are highly crystalline and non-polar polymers,which makes their dyeing a very difficult step that poses real technical challenges.In order to overcome this concern,it is intended in this paper to modify acrylic fibers by different methods namely cationisation using the Crosscolor DRT then amidoximation using hydroxylamine hydrochloride and ammonium acetate.The resulted samples were dyed then with the bio-colorant extracted from grape marc.The effect of the pretreatment on fibers fine structure using X-ray diffraction and the scanning electron microscope(SEM)images and its correlation with the colour strength of the dyed fabrics was investigated.The dyeing parameters,such as dye bath pH and temperature on the performances of this dyeing process were studied.Good dyeing qualities and new shades varying from brown to grey and dark green have been obtained following process optimization,mordanting and modification of acrylic fibers by the technique of cationisation. | Noureddine Baaka Manel Ben Ticha Wafa Haddar Mohamed Farouk Mhenni | 2019 | Journal of Renewable Materials2019，7，3： | 2 |
| 4 | BSF1 fibrinolytic enzyme from a marine bacter/um Bacillus subtilis A26: Purification,biochemical and molecular characterization 显示文摘 | Agrebi R Haddar A Hmidet N | 2009 | Process Biochem2009，44，11： | 1 |
| 5 | Protein hydrolysates from bluefin tuna(Thunnusthynnus)heads as influenced by the extent of enzymatic hydrolysis显示文摘 | BOUGATEF A BALTI R HADDAR A | 2012 | Biotechnology and Bioprocess Engineering2012，17，： | 1 |
| 6 | Susceptibility-weighted imaging to visualize blood products and improve tumorcontrast in the study of brain masses显示文摘 | Sehgal V Delproposto Z Haddar D | 2006 | J Magn Reson Imaging2006，24，1： | 1 |
| 7 | Susceptibility -weighted imaging to visualize blood products and improvetumor contrast in the study of brain masses显示文摘 | Sehgal V Delproposto Z Haddar D | 2006 | J Magn Re-son Imaging2006，24，1： | 1 |
| 8 | Generalized impedance boundary conditions for scattering problems from strong- ly absorbing obstacles:the case of maxwell's equations 显示文摘 | Haddar H Joly P Nguyen H M | 2008 | Math Models and Methods in Appl Sci2008，18，： | 1 |
| 9 | Protein hydrolysates from bluefin tuna (Thunnus thynnus) heads as influ- enced by the extent of enzymatic hydrolysis显示文摘 | Bougatef A Balti R Haddar A | 2012 | Biotechnology and Bioprocess Engineering2012，17，： | 1 |
| 10 | Nonlinear dynamics of a two-stage gear system with mesh stiffness fluctuation,bearing flexibility and backlash显示文摘 | Lassad Walha Tahar Fakhfakh Mohamed Haddar | 2009 | Mechanism and Machine Theory2009，，44： | 1 |
| 11 | Stable reconstructi-on of generalized impedance boundary conditions 显示文摘 | Bourgeois L Chaulet N Haddar H | 2011 | Inverse Problems2011，27，09： | 1 |
| 12 | Dynamic analysis of a planetary gear failure caused by tooth pitting and cracking显示文摘 | F. Chaari T. Fakhfakh M. Haddar | 2006 | Journal of Failure Analysis and Prevention2006，，2： | 1 |
| 13 | Nonlinear dynamics of a two-stage gear system with mesh stiffness fluctuation,bearing flexibility and backlash显示文摘 | Walha L Fakhfakh T Haddar M | 2009 | Mechanism and Machine Theory2009，44，5： | 1 |
| 14 | Susceptibility-weigh ted imaging to visualize blood products and improve tumor con trast in the study of brain masses显示文摘 | Sehgal V Delproposto Z Haddar D | 2006 | J Magn Reson Imaging2006，24，1： | 1 |
| 15 | Finite ele- ments modeling of olive tree mechanical harvesting using different shakers 显示文摘 | Bentaher H Haddar M Fakhfakh T | 2013 | Trees2013，27，15： | 1 |
| 16 | Nonlinear dy- namics of a two - stage gear system with mesh stiffness fluctuation, bearing flexibility and backlash显示文摘 | Lassaad Walha Tahar Fakhfakh Mohamed Haddar | 2009 | Mechanism and Machine The- ory2009，44，5： | 1 |
| 17 | A novel surfactant-stable alkaline serine-protease from a newly isolated Bacillus mojavensis A21 Purification and characterization显示文摘 | HADDAR A | | 0，，： | 1 |
| 18 | Hardness effect on thermal fatigue damage of hot-working tool steel 显示文摘 | Mellouli D Haddar N Koster A | 2014 | Engineering Failure Analysis2014，45，： | 1 |
| 19 | Spinal subdural haematoma: a study of three cases显示文摘 | Boukobza M Haddar D | 2001 | Clin Radiol2001，56，6： | 1 |
| 20 | Modeling and computation of the three-roller bending process of steel sheets显示文摘 | Ahmed Ktari Zied Antar Nader Haddar Khaled Elleuch | 2012 | Journal of Mechanical Science and Technology2012，，1： | 1 |
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