Number of documents

71

Articles


Journal articles71 documents

  • D. Morin, M. Fourmeau, T. Børvik, Ahmed Benallal, O.S. Hopperstad. Anisotropic tensile failure of metals by the strain localization theory: An application to a high-strength aluminium alloy. European Journal of Mechanics - A/Solids, Elsevier, 2018, 69, pp.99 - 112. ⟨10.1016/j.euromechsol.2017.11.015⟩. ⟨hal-01717958⟩
  • Ahmed Benallal. On some features of the effective behaviour of porous solids with J 2 - and J 3 -dependent yielding matrix behaviour. Comptes Rendus Mécanique, Elsevier Masson, 2018, 346 (2), pp.77 - 88. ⟨10.1016/j.crme.2017.11.002⟩. ⟨hal-01717944⟩
  • David Morin, Odd Sture Hopperstad, Ahmed Benallal. On the description of ductile fracture in metals by the strain localization theory. International Journal of Fracture, Springer Verlag, 2018, 209 (1-2), pp.27 - 51. ⟨10.1007/s10704-017-0236-9⟩. ⟨hal-01717960⟩
  • A. Benallal. Constitutive equations for porous solids with matrix behaviour dependent on the second and third stress invariants. International Journal of Impact Engineering, Elsevier, 2017, 108, pp.47 - 62. ⟨10.1016/j.ijimpeng.2017.05.004⟩. ⟨hal-01592338⟩
  • M. Fourmeau, C.D. Marioara, T. Børvik, Ahmed Benallal, O.S. Hopperstad. A study of the influence of precipitate-free zones on the strain localization and failure of the aluminium alloy AA7075-T651. Philosophical Magazine, Taylor & Francis, 2015, 95 (28-30), pp.3278 - 3304. ⟨10.1080/14786435.2015.1040099⟩. ⟨hal-01717954⟩
  • O.S. Hopperstad, T. Børvik, M. Fourmeau, K.O. Pedersen, Ahmed Benallal. Quasi-static and Dynamic Fracture of High-strength Aluminium Alloy. Procedia Materials Science, Elsevier, 2014, 3, pp.51 - 56. ⟨10.1016/j.mspro.2014.06.012⟩. ⟨hal-01717962⟩
  • Ahmed Benallal, R. Desmorat, M. Fournage. An assessment of the role of the third stress invariant in the Gurson approach for ductile fracture. European Journal of Mechanics - A/Solids, Elsevier, 2014, 47, pp.400 - 414. ⟨10.1016/j.euromechsol.2014.02.009⟩. ⟨hal-01717959⟩
  • M. Fourmeau, T. Børvik, Ahmed Benallal, O.S. Hopperstad. Anisotropic failure modes of high-strength aluminium alloy under various stress states. International Journal of Plasticity, Elsevier, 2013, 48, pp.34 - 53. ⟨10.1016/j.ijplas.2013.02.004⟩. ⟨hal-01717957⟩
  • Ahmed Benallal, T. Berstad, T. Børvik, Rodrigo Nogueira de Codes, O.S. Hopperstad. Computational aspects in presence of negative strain-rate sensitivity with application to aluminium alloys exhibiting the Portevin–Le Chatelier effect. Modelling and Simulation in Materials Science and Engineering, IOP Publishing, 2012, ⟨10.1088/issn.0965-0393⟩. ⟨hal-01718212⟩
  • Odd Lademo, Olaf Engler, Ahmed Benallal, Odd Sture Hopperstad. Effect of strain rate and dynamic strain ageing on work-hardening for aluminium alloy AA5182-O. International Journal of Materials Research, 2012, 103 (8), pp.1035 - 1041. ⟨10.3139/146.110741⟩. ⟨hal-01718603⟩
  • E.T. Lima Junior, W.S. Venturini, Ahmed Benallal. BEM modeling of saturated porous media susceptible to damage. Engineering Analysis with Boundary Elements, Elsevier, 2012, 36 (2), pp.147 - 153. ⟨10.1016/j.enganabound.2011.07.002⟩. ⟨hal-01718659⟩
  • Anne Serine Ognedal, Arild Holm Clausen, Mario Polanco-Loria, Ahmed Benallal, Bumedijen Raka, et al.. Experimental and numerical study on the behaviour of PVC and HDPE in biaxial tension. Mechanics of Materials, Elsevier, 2012, 54, pp.18 - 31. ⟨10.1016/j.mechmat.2012.05.010⟩. ⟨hal-01718431⟩
  • Eduardo Toledo de Lima Junior, Wilson S. Venturini, Ahmed Benallal. Coupled Evolution of Damage and Fluid Flow in a Mandel-type Problem. Computer Modeling in Engineering and Sciences, Tech Science Press, 2011. ⟨hal-01719105⟩
  • A. Kane, T. Børvik, T. Berstad, Ahmed Benallal, O.S. Hopperstad. Failure criteria with unilateral conditions for simulation of plate perforation. European Journal of Mechanics - A/Solids, Elsevier, 2011, 30 (4), pp.468 - 476. ⟨10.1016/j.euromechsol.2011.02.003⟩. ⟨hal-01718417⟩
  • R. Nogueira de Codes, O. Hopperstad, O. Engler, O.-G. Lademo, J. Embury, et al.. Spatial and Temporal Characteristics of Propagating Deformation Bands in AA5182 Alloy at Room Temperature. Metallurgical and Materials Transactions A, Springer Verlag/ASM International, 2011, 42 (11), pp.3358 - 3369. ⟨10.1007/s11661-011-0749-1⟩. ⟨hal-01718373⟩
  • M. Fourmeau, T. Børvik, Ahmed Benallal, O.G. Lademo, O.S. Hopperstad. On the plastic anisotropy of an aluminium alloy and its influence on constrained multiaxial flow. International Journal of Plasticity, Elsevier, 2011, 27 (12), pp.2005 - 2025. ⟨10.1016/j.ijplas.2011.05.017⟩. ⟨hal-01718388⟩
  • Rodrigo Nogueira de Codes, Ahmed Benallal. Influence of specimen geometry on the Portevin–Le Châtelier effect due to dynamic strain aging for the AA5083-H116 aluminum alloy. Journal of Mechanics of Materials and Structures, Mathematical Sciences Publishers, 2011, 6 (7-8), pp.951 - 968. ⟨10.2140/jomms.2011.6.951⟩. ⟨hal-01718837⟩
  • Ahmed Benallal, T. Berstad, T. Børvik, O. Hopperstad. Uniqueness, loss of ellipticity and localization for the time-discretized, rate-dependent boundary value problem with softening. International Journal for Numerical Methods in Engineering, Wiley, 2010, 84 (7), pp.864 - 882. ⟨10.1002/nme.2931⟩. ⟨hal-01718472⟩
  • O. Lademo, O. Engler, J. Aegerter, T. Berstad, Ahmed Benallal, et al.. Strain-Rate Sensitivity of Aluminum Alloys AA1200 and AA3103. Journal of Engineering Materials and Technology, American Society of Mechanical Engineers, 2010, 132 (4), ⟨10.1115/1.4002160⟩. ⟨hal-01718523⟩
  • M. Fourmeau, T. Børvik, Ahmed Benallal, O.S. Hopperstad. On the fracture locus of AA7075-T651. EPJ Web of Conferences, EDP Sciences, 2010, 6, ⟨10.1051/epjconf/20100602006⟩. ⟨hal-01719107⟩
  • E Junior, W Venturini, Ahmed Benallal. BEM applied to damage phenomena in saturated porous media. IOP Conference Series: Materials Science and Engineering, IOP Publishing, 2010, 10, ⟨10.1088/1757-899X/10/1/012049⟩. ⟨hal-01719106⟩
  • A. Benallal, Torod Berstad, Tore Borvik, Odd Sture Hopperstad, Rodrigo Nogueira de Codes. Effects of strain rate on the characteristics of PLC deformation bands for AA5083-H116 aluminium alloy. Philosophical Magazine, Taylor & Francis, 2009, 88 (28-29), pp.3311-3338. ⟨10.1080/14786430802468223⟩. ⟨hal-00513974⟩
  • Ahmed Benallal, Alexandre Botta, Wilson Venturini. Consolidation of elastic–plastic saturated porous media by the boundary element method. Computer Methods in Applied Mechanics and Engineering, Elsevier, 2008, 197 (51-52), pp.4626 - 4644. ⟨10.1016/j.cma.2008.06.003⟩. ⟨hal-01718845⟩
  • J. Utzinger, A. Menzel, P. Steinmann, Ahmed Benallal. Aspects of bifurcation in an isotropic elastic continuum with orthotropic inelastic interface. European Journal of Mechanics - A/Solids, Elsevier, 2008, 27 (4), pp.532 - 547. ⟨10.1016/j.euromechsol.2007.11.001⟩. ⟨hal-01718457⟩
  • Ahmed Benallal. A note on ill-posedness for rate-dependent problems and its relation to the rate-independent case. Computational Mechanics, Springer Verlag, 2008, 42 (2), pp.261 - 269. ⟨10.1007/s00466-008-0252-8⟩. ⟨hal-01718524⟩
  • Ahmed Benallal, T. Berstad, T. Børvik, O.S. Hopperstad, I. Koutiri, et al.. An experimental and numerical investigation of the behaviour of AA5083 aluminium alloy in presence of the Portevin–Le Chatelier effect. International Journal of Plasticity, Elsevier, 2008, 24 (10), pp.1916 - 1945. ⟨10.1016/j.ijplas.2008.03.008⟩. ⟨hal-01718268⟩
  • John-John Cabibihan, Stephane Pattofatto, Moez Jomaa, Ahmed Benallal, Maria Chiara Carrozza. Towards Humanlike Social Touch for Sociable Robotics and Prosthetics: Comparisons on the Compliance, Conformance and Hysteresis of Synthetic and Human Fingertip Skins. International Journal of Social Robotics, Springer, 2008, vol 1, pp.29-40. ⟨10.1007/s12369-008-0008-9⟩. ⟨hal-00418519⟩
  • O Hopperstad, T. Børvik, T. Berstad, O-G Lademo, Ahmed Benallal. A numerical study on the influence of the Portevin–Le Chatelier effect on necking in an aluminium alloy. Modelling and Simulation in Materials Science and Engineering, IOP Publishing, 2007, 15 (7), pp.747 - 772. ⟨10.1088/0965-0393/15/7/004⟩. ⟨hal-01718370⟩
  • Ahmed Benallal, Jean-Jacques Marigo. Bifurcation and stability issues in gradient theories with softening. Modelling and Simulation in Materials Science and Engineering, IOP Publishing, 2007, 15 (1), pp.S283-S295. ⟨10.1088/0965-0393/15/1/S22⟩. ⟨hal-00551073⟩
  • Ahmed Benallal, Alexandre Botta, Wilson Venturini. On the description of localization and failure phenomena by the boundary element method. Computer Methods in Applied Mechanics and Engineering, Elsevier, 2006, 195 (44-47), pp.5833 - 5856. ⟨10.1016/j.cma.2005.08.025⟩. ⟨hal-01718393⟩
  • Ahmed Benallal, T. Berstad, T. Børvik, A.H. Clausen, O.S. Hopperstad. Dynamic strain aging and related instabilities: experimental, theoretical and numerical aspects. European Journal of Mechanics - A/Solids, Elsevier, 2006, 25 (3), pp.397 - 424. ⟨10.1016/j.euromechsol.2005.10.007⟩. ⟨hal-01718317⟩
  • Ahmed Benallal, T. Berstad, T. Borvik, A. Clausen, O. Hopperstad. Dynamic strain aging and related instabilities : experimental, theoretical and numerical aspects. European Journal of Mechanics - A/Solids, Elsevier, 2006, 25, pp.397-424. ⟨hal-00081806⟩
  • O. Hopperstad, T. Børvik, T. Berstad, Ahmed Benallal. Finite element simulations of the Portevin–Le Chatelier effect in aluminium alloy. Journal de Physique 4, EDP Sciences, 2006, 134, pp.435 - 441. ⟨10.1051/jp4:2006134067⟩. ⟨hal-01718577⟩
  • Eric Lorentz, Ahmed Benallal. Gradient constitutive relations : numerical aspects and application to gradient damage. Computer Methods in Applied Mechanics and Engineering, Elsevier, 2005, 194, pp.5191-5220. ⟨hal-00010160⟩
  • Ahmed Benallal, E. Lorentz. Gradient constitutive relations: numerical aspects and application to gradient damage. Computer Methods in Applied Mechanics and Engineering, Elsevier, 2005, 194 (50-52), pp.5191 - 5220. ⟨10.1016/j.cma.2004.12.016⟩. ⟨hal-01718363⟩
  • E. Lorentz, A. Benallal. Gradient constitutive relations : numerical aspects and application to gradient damage. Computer Methods in Applied Mechanics and Engineering, Elsevier, 2005, 194, pp.5191-5220. ⟨hal-00089126⟩
  • Ahmed Benallal. On localization modes in coupled thermo-hydro-mechanical problems. Comptes Rendus Mécanique, Elsevier Masson, 2005, 333 (7), pp.557 - 564. ⟨10.1016/j.crme.2005.05.005⟩. ⟨hal-01718607⟩
  • Ahmed Benallal, Claudia Comi. On interfacial properties in gradient damaging continua. Comptes Rendus Mécanique, Elsevier Masson, 2005, 333 (4), pp.319 - 324. ⟨10.1016/j.crme.2005.02.001⟩. ⟨hal-01718555⟩
  • Alexandre Botta, Wilson Venturini, Ahmed Benallal. BEM applied to damage models emphasizing localization and associated regularization techniques. Engineering Analysis with Boundary Elements, Elsevier, 2005, 29 (8), pp.814 - 827. ⟨10.1016/j.enganabound.2005.04.006⟩. ⟨hal-01718403⟩
  • Ahmed Benallal, Davide Bigoni. Effects of temperature and thermo-mechanical couplings on material instabilities and strain localization of inelastic materials. Journal of the Mechanics and Physics of Solids, Elsevier, 2004, 52 (3), pp.725 - 753. ⟨10.1016/S0022-5096(03)00118-2⟩. ⟨hal-01718360⟩
  • Arild Clausen, Tore Borvik, Odd Hopperstad, Ahmed Benallal. Flow and fracture characteristics of aluminium alloy AA5083–H116 as function of strain rate, temperature and triaxiality. Materials Science and Engineering: A, Elsevier, 2004, 364 (1-2), pp.260 - 272. ⟨10.1016/j.msea.2003.08.027⟩. ⟨hal-01718241⟩
  • Ahmed Benallal, C. Comi. On numerical analyses in the presence of unstable saturated porous materials. International Journal for Numerical Methods in Engineering, Wiley, 2003, 56 (6), pp.883 - 910. ⟨10.1002/nme.597⟩. ⟨hal-01718436⟩
  • Ahmed Benallal, Claudia Comi. Perturbation growth and localization in fluid-saturated inelastic porous media under quasi-static loadings. Journal of the Mechanics and Physics of Solids, Elsevier, 2003, 51 (5), pp.851 - 899. ⟨10.1016/S0022-5096(02)00143-6⟩. ⟨hal-01718385⟩
  • Ahmed Benallal, Carlos A. Fudoli, Wilson S. Venturini. An implicit BEM formulation for gradient plasticity and localization phenomena. International Journal for Numerical Methods in Engineering, Wiley, 2002, 53 (8), pp.1853 - 1869. ⟨10.1002/nme.365⟩. ⟨hal-01718358⟩
  • Ahmed Benallal, Claudia Comi. Quasi-static versus dynamic failure instabilities in fluid-saturated porous media. Comptes Rendus Mécanique, Elsevier Masson, 2002. ⟨hal-01719104⟩
  • Ahmed Benallal, Claudia Comi. Material instabilities in inelastic saturated porous media under dynamic loadings. International Journal of Solids and Structures, Elsevier, 2002, 39 (13-14), pp.3693 - 3716. ⟨10.1016/S0020-7683(02)00180-4⟩. ⟨hal-01718383⟩
  • T. Liebe, P. Steinmann, Ahmed Benallal. Theoretical and computational aspects of a thermodynamically consistent framework for geometrically linear gradient damage. Computer Methods in Applied Mechanics and Engineering, Elsevier, 2001, 190 (49-50), pp.6555 - 6576. ⟨10.1016/S0045-7825(01)00250-X⟩. ⟨hal-01718266⟩
  • Ahmed Benallal, Claudia Comi. On localization in saturated porous continua. Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics-Physics-Astronomy, 2000, 328 (12), pp.847 - 853. ⟨10.1016/S1620-7742(00)01277-0⟩. ⟨hal-01718541⟩
  • Gilles Barbier, Ahmed Benallal, Valerie Cano. Relation théorique entre la méthode de perturbation linéaire et l'analyse de bifurcation pour la prédiction de la localisation des déformations. Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics-Physics-Chemistry-Astronomy, 1998, 326 (3), pp.153 - 158. ⟨10.1016/S1251-8069(99)89001-0⟩. ⟨hal-01718253⟩
  • Ahmed Benallal, V. Tvergaard. 2D nonlocal versus 3D bifurcation studies for biaxially loaded plates. Journal de Physique 4, EDP Sciences, 1998, 08 (PR8), pp.Pr8-29 - Pr8-37. ⟨10.1051/jp4:1998804⟩. ⟨hal-01719112⟩
  • R. de Borst, A. Benallal, O. Heeres. A Gradient-Enhanced Damage Approach to Fracture. Journal de Physique IV Colloque, 1996, 06 (C6), pp.C6-491-C6-502. ⟨10.1051/jp4:1996649⟩. ⟨jpa-00254482⟩
  • Ahmed Benallal, Claudia Comi. Localization analysis via a geometrical method. International Journal of Solids and Structures, Elsevier, 1996, 33 (1), pp.99 - 119. ⟨10.1016/0020-7683(95)00018-6⟩. ⟨hal-01718320⟩
  • Ahmed Benallal, Viggo Tvergaard. Nonlocal continuum effects on bifurcation in the plane strain tension-compression test. Journal of the Mechanics and Physics of Solids, Elsevier, 1995, 43 (5), pp.741 - 770. ⟨10.1016/0022-5096(95)00002-Z⟩. ⟨hal-01718314⟩
  • Ahmed Benallal, Claudia Comi. Closed form solutions to localization conditions for rate-independent materials. Comptes rendus de l’Académie des sciences. Série IIb, Mécanique, physique, chimie, astronomie, Elsevier, 1994. ⟨hal-01719113⟩
  • Julio Florez-Lopez, Ahmed Benallal, Giuseppe Geymonat, René Billardon. A two-field finite element formulation for elasticity coupled to damage. Computer Methods in Applied Mechanics and Engineering, Elsevier, 1994, 114 (3-4), pp.193 - 212. ⟨10.1016/0045-7825(94)90171-6⟩. ⟨hal-01718412⟩
  • Gilles Pijaudier-Cabot, Ahmed Benallal. Strain localization and bifurcation in a nonlocal continuum. International Journal of Solids and Structures, Elsevier, 1993, 30 (13), pp.1761 - 1775. ⟨10.1016/0020-7683(93)90232-V⟩. ⟨hal-01718249⟩
  • Ahmed Benallal, Claudia Comi. The role of deviatoric and volumetric non-associativities on strain localization. Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Serie IX. Rendiconti Lincei. Matematica e Applicazioni, European Mathematical Society, 1993. ⟨hal-01719114⟩
  • J. Lemaitre, Ahmed Benallal, D. Marquis. Lifetime prediction of structures in anisothermal viscoplasticity coupled to damage. Nuclear Engineering and Design, Elsevier, 1992, 133 (3), pp.345 - 360. ⟨10.1016/0029-5493(92)90161-N⟩. ⟨hal-01718538⟩
  • Ahmed Benallal. Quelques remarques sur le rôle du couplage thermomécanique dans les phénomènes de localisation. (Some remarks on the role of thermo- mechanical couplings in localization phenomena). Comptes rendus de l’Académie des sciences. Série IIb, Mécanique, physique, chimie, astronomie, Elsevier, 1991. ⟨hal-01719115⟩
  • Ahmed Benallal, R. Billardon, J. Lemaitre. Continuum damage mechanics and local approach to fracture: Numerical procedures. Computer Methods in Applied Mechanics and Engineering, Elsevier, 1991, 92 (2), pp.141 - 155. ⟨10.1016/0045-7825(91)90236-Y⟩. ⟨hal-01718284⟩
  • Ahmed Benallal, R Billardon, G. Geymonat. Phénomènes de localisation à la frontière d’un solide. (Localization phenomena at the boundary of solids). Comptes rendus de l’Académie des sciences. Série IIb, Mécanique, physique, chimie, astronomie, Elsevier, 1990. ⟨hal-01719119⟩
  • Ahmed Benallal, G. Geymonat. Sur le problème en vitesses pour les solides élasto-viscoplastiques endommageables en présence de zone rompue. (On the rate boundary value problem for elastic-viscoplastic damageable solids containing a ruptured zone). Comptes rendus de l’Académie des sciences. Série IIb, Mécanique, physique, chimie, astronomie, Elsevier, 1990. ⟨hal-01719122⟩
  • Ahmed Benallal, P. Chabrand, M. Ghazouane, M. Chaudonneret, J. Culié, et al.. Validation of structural computation codes in elastoviscoplasticity. International Journal for Numerical Methods in Engineering, Wiley, 1990, 29 (5), pp.1109-1130. ⟨10.1002/nme.1620290514⟩. ⟨hal-01718554⟩
  • Ahmed Benallal, R. Billardon, G. Geymonat. Conditions de bifurcation à l’intérieur et aux frontière pour une classe de matériaux non-standards. (Bifurcation conditions inside and at the boundary for a class of non-standard materials). Comptes rendus de l’Académie des sciences. Série IIb, Mécanique, physique, chimie, astronomie, Elsevier, 1989. ⟨hal-01719123⟩
  • Ahmed Benallal, P. Le Gallo, D. Marquis. An experimental investigation of cyclic hardening of 316 stainless steel and of 2024 aluminium alloy under multiaxial loadings. Nuclear Engineering and Design, Elsevier, 1989, 114 (3), pp.345 - 353. ⟨10.1016/0029-5493(89)90112-X⟩. ⟨hal-01718278⟩
  • Ahmed Benallal, René Billardon, Issam Doghri. An integration algorithm and the corresponding consistent tangent operator for fully coupled elastoplastic and damage equations. Communications in Applied Numerical Methods, Wiley, 1988, 4 (6), pp.731 - 740. ⟨10.1002/cnm.1630040606⟩. ⟨hal-01718276⟩
  • Ahmed Benallal, D. Marquis. Effects of non‐proportional loadings in cyclic elasto‐viscoplasticity: experimental, theoretical and numerical aspects. Engineering Computations, Emerald, 1988, 5 (3), pp.241 - 247. ⟨10.1108/eb023742⟩. ⟨hal-01718595⟩
  • Ahmed Benallal, Julio Florez-Lopez, Giusepe Geymonat. Sur une formulation variationnelle à deux champs en élasticité couplée à l’endommagement. (A two-field variational formulation in elasticity coupled to damage). Comptes rendus de l’Académie des sciences. Série IIb, Mécanique, physique, chimie, astronomie, Elsevier, 1987. ⟨hal-01719125⟩
  • Ahmed Benallal. On the stability of some time-integration schemes in quasi-static hardening elasto-viscoplasticity. Engineering Analysis, Elsevier, 1987, 4 (2), pp.95 - 99. ⟨10.1016/0264-682X(87)90019-0⟩. ⟨hal-01718531⟩
  • Ahmed Benallal, D. Marquis. Constitutive Equations for Nonproportional Cyclic Elasto-Viscoplasticity. Journal of Engineering Materials and Technology, American Society of Mechanical Engineers, 1987, 109 (4), ⟨10.1115/1.3225985⟩. ⟨hal-01718246⟩
  • Ahmed Benallal. Structural analysis in quasi‐static elasto‐viscoplasticity. Engineering Computations, Emerald, 1986, 3 (4), pp.323 - 330. ⟨10.1108/eb023674⟩. ⟨hal-01718439⟩