Publications
2013Larsson, Ragnar; Landervik, Mats: A stress-resultant shell theory based on multiscale homogenization. Computer Methods in Applied Mechanics and Engineering,
Ljustina, Goran; Fagerström, Martin; Larsson, Ragnar: Rate Sensitive Continuum Damage Models and Mesh Dependence in Finite Element Analyses. MekIT'13 Seventh National Conference on Computational Mechanics, pp. 21-32. ISBN/ISSN: 978-82-321-0266-2
Rouhi, Mohammad; Wysocki, Maciej; Larsson, Ragnar: Modeling of coupled dual-scale flow–deformation processes in composites manufacturing. Composites. Part A, Applied science and manufacturing, 46 pp. 108-116.
2012Ahlström, Johan; Larsson, Ragnar: Modeling of Distortion during Casting and Machining of Aluminum Engine Blocks with Cast-in Gray Iron Liners. Materials Performance and Characterization, 9 (5) pp. 1–19.
Larsson, Ragnar; Ljustina, Goran; Fagerström, Martin: Ductile dynamic fracture modeling using embedded discontinuities in CGI machining simulations. proc. 83rd Annual Meeting of the International Association of Applied Mathematics and Mechanics,
Larsson, Ragnar; Ljustina, Goran; Fagerström, Martin: Ductile dynamic fracture modeling using embedded strong discontinuities in CGI machining simulations. ECCOMAS 2012, Vienna University of Technology,
Ljustina, Goran; Larsson, Ragnar; Fagerström, Martin: Ductile dynamic fracture modeling using embedded strong discontinuities in CGI machining simulations. Proceedings of the 25th Nordic Seminar on Computational Mechanics,
Ljustina, Goran; Fagerström, Martin; Larsson, Ragnar: Hypo– and hyperinelasticity applied to modeling of compacted graphite iron machining simulations. European Journal of Mechanics - A/Solids, 37 pp. 57-68.
Mostofizadeh, Salar; Fagerström, Martin; Larsson, Ragnar; Sluys, Bert; Mediavilla, Jesus: Dynamic ductile fracture in shells. Proc ECCOMAS 2012, Vienna University of Technology,
Rouhi, Mohammad; Wysocki, Maciej; Larsson, Ragnar: CONSTITUTIVE MODELLING OF ANISOTROPIC TWO-SCALE FLOW. 15th European Conference on Composite Material (ECCM15) - Venice- Italy 2012,
Rouhi, Mohammad; Wysocki, Maciej; Larsson, Ragnar: Composite manufacturing modeling using porous media theory. 25th Nordic Seminar on Computational Mechanics (NSCM25), pp. 295-298.
Rouhi, Mohammad; Wysocki, Maciej; Larsson, Ragnar: MODELING THE CONSTITUTIVE RESPONSE OF AN ANISOTROPIC DUAL-SCALE FLOW. 11th International Conference on Flow Processing in Composite Materials (FPCM11) - Auckland - New Zealand 2012,
Samadikhah, Kaveh; Larsson, Ragnar; Bolton, Kim; Bazooyar, Faranak: Continuum-molecular modelling of Graphene. Computational Materials Science, 53 (1) pp. 37-43.
2011Brommesson, Rebecka; Grauers, Lisa; Ekh, Magnus; Hörnqvist, Magnus; Larsson, Ragnar; Persson, Christer: Experiments and modelling of the cyclic behaviour of Haynes 282. Book of abstracts of 2nd International Conference on Material Modeling (ICMM2), Paris (France),
Larsson, Ragnar; Samadikhah, Kaveh: Atomistic continuum modeling of graphene membranes. Computational Materials Science, 50 (5) pp. 1744-1753 .
Larsson, Ragnar; Mostofizadeh, Salar; Mediavilla, Jesus; Fagerström, Martin: Dynamic Ductile Fracture in Thin-walled Structures based on XFEM . Proc. Int. Conf. on computational modeling of fracture and failure of materials and structures (CFRAC 2011),
Larsson, Ragnar; Rouhi, Mohammad; Wysocki, Maciej: Free surface flow and preform deformation in composites manufacturing based on porous media theory. European Journal of Mechanics - A/Solids, 31 (1) pp. 1-12.
Larsson, Ragnar; Rouhi, Mohammad; Wysocki, Maciej: Resin Flow and Preform Deformation in Composites Manufacturing Based on a Partially Saturated Porous Medium. Computational Plasticity XI - Fundamentals and applications, ISBN/ISSN: 978-84-89925-23-6
Ljustina, Goran; Larsson, Ragnar; Fagerström, Martin: Constitutive Modeling of CGI Machining Simulations . Computational Plasticity XI - Fundamentals and Applications, ISBN/ISSN: 978-84-89925-23-6
Ljustina, Goran; Fagerström, Martin; Larsson, Ragnar: Hypo-- and hyperinelasticity applied to modeling of compacted graphite iron machining simulations. Proceedings of the 24th nordic seminar on computational mechanics, pp. 59-62. ISBN/ISSN: 978-952-60-4347-0
Rouhi, Mohammad; Larsson, Ragnar; Wysocki, Maciej: Modeling resin flow, preform deformations and residual stresses in RTM manufacturing. Proc. of International Conference on Manufacturing of Advanced Composites, ICMAC 2011, Belfast, Northern Ireland,
2010Ahlström, Johan; Larsson, Ragnar: Modelling of distortion during casting and machining. Conference proceedings ICTPMCS-2010, 31 May – 2 June 2010, Shanghai, China, pp. 8 pp.
Fagerström, Martin; Larsson, Ragnar; Mediavilla, Jesus: A cohesive zone formulation of fracturing shells based on XFEM. Proceedings of IV European Conference on Computational Mechanics,
Larsson, Ragnar; Mediavilla, Jesus; Fagerström, Martin: Dynamic fracture modeling in shell structures based on XFEM. International Journal for Numerical Methods in Engineering, 86 (4-5) pp. 499–527.
Larsson, Ragnar; Rouhi, Mohammad; Wysocki, Maciej: Infusion modelling using two-phase porous media theory. Proc. IV European Conference on Computational Mechanics (ECCM IV 2010), Paris, France,
Ljustina, Goran; Fagerström, Martin; Larsson, Ragnar: Constitutive modeling and validation of CGI machining. 23rd Nordic Seminar on Computational Mechanics, 21-22 October, Stockholm,
Rouhi, Mohammad; Larsson, Ragnar; Wysocki, Maciej: Modeling resin flow and preform deformation in composite manufacturing based on partially saturated porous media theory. Procedeing of 23rd Nordic Seminar on Computational Mechanics, pp. 142-145.
Samadikhah, Kaveh; Larsson, Ragnar; Bolton, Kim; Bazooyar, F.: Continuum - Molecular Modeling of Graphene Lattice. Proc. IV European Conference on Computational Mechanics,
Wysocki, Maciej; Larsson, Ragnar; Toll, Staffan: Modelling multiple scales in composites manufacturing. Proceedings of The 10th International Conference on Flow Processes in Composite Materials (FPCM10), Monte Veritā, Ascona, CH – July 11-15, 2010,
2009Ahlström, Johan; Larsson, Ragnar; Ekh, Magnus: Aspects of viscoplasticty on manufacturing induced out-of-roundness in engine cylinder liners. Proc. of 1st International Conference on Material Modelling,
Hård af Segerstad, Per; Toll, Staffan; Larsson, Ragnar: A micropolar theory for the finite elasticity of open-cell cellular solids. Proceedings of the Royal Society A, 465 pp. 843-865.
Hård af Segerstad, Per; Toll, Staffan; Larsson, Ragnar: Computational modelling of dissipative open-cell cellular solids at finite deformations. International Journal of Plasticity, 25 (5) pp. 802-821.
Larsson, Ragnar; Mediavilla, Jesus; Fagerström, Martin: A cohesive zone formulation for shell structures based on XFEM. Proceedings of the ECCOMAS Thematic Conference "The extended finite element method", 2009,
Larsson, Ragnar; Landervik, Mats: A higher-order stress-resultant shell formulation based on multiscale homogenization. Proc of X International Conference on Computational Plasticity,
Ljustina, Goran; Larsson, Ragnar: Meso-level material modelling of compacted graphite iron and maching process simulation. Proceedings of the 22nd Nordic Seminar on Computational Mechanics,
Samadikhah, Kaveh; Larsson, Ragnar: Semi-Continuum Modeling of a Graphene Lattice Based on Tersoff-Brenner Atomistic Potential. Proceedings of the 22nd Nordic Seminar on Computational Mechanics,
Wysocki, Maciej; Larsson, Ragnar; Toll, Staffan: MODELLING THE CONSOLIDATION OF PARTIALLY IMPREGNATED PREPREGS. Proceedings of 17th International Conference on Composite Materials, Edinburgh, UK ,
Wysocki, Maciej; Asp, L. E.; Toll, Staffan; Larsson, Ragnar: Two phase continuum modelling of composites consolidation. Plastics Rubber and Composites, 38 (2-4) pp. 93-97.
Zhang, Yan; Larsson, Ragnar: Homogenization of Delamination Growth in an ACA Flip-chip Joint Based on Micropolar Theory. European Journal of Mechanics - A/Solids, 28 pp. 433-444.
2008Fagerström, Martin; Larsson, Ragnar: A thermo-mechanical cohesive zone formulation for ductile fracture. Journal of the Mechanics and Physics of Solids, 56 (10) pp. 3037-3058.
Fagerström, Martin; Larsson, Ragnar: Approaches to dynamic fracture modeling at finite deformations. IUTAM Symposium - Progress in the Theory and Numerics of Configurational Mechanics (book of abstracts), pp. 69.
Fagerström, Martin; Larsson, Ragnar: Approaches to dynamic fracture modelling at finite deformations. Journal of the Mechanics and Physics of Solids , 56 (613-639)
Hård af Segerstad, Per; Larsson, Ragnar; Toll, Staffan: A constitutive equation for open-cell cellular solids, including viscoplasticity, damage and deformation induced anisotropy . International Journal of Plasticity, 24 (5) pp. 896-914.
Landervik, Mats; Larsson, Ragnar: Homogenization and Shell Theory for Modeling Thin Porous Layers. 21st Nordic Seminar on Compuational Mechanics (T. Kvamsdal, K.M. Mathisen and B. Pettersen Eds.), pp. 147-148. ISBN/ISSN: 978-84-96736-56-6
Landervik, Mats; Larsson, Ragnar: Modeling of large inelastic deformations of foams with respect to the point of compaction. European Journal of Mechanics - A/Solids , 27 (2) pp. 234-246.
Landervik, Mats; Larsson, Ragnar: Multi-Scale Homogenization of Thin Foam Layers Represented by Shell Elements. International Conference Impact Loading of Lightweight Structures. Trondheim, Norway. June 17-19, 2008. (Edited by A.H. Clausen and M. Langseth), pp. 35-36.
Larsson, Ragnar; Samadikhah, Kaveh: Atomistic Continuum Modeling of Mono Layer Graphene Membranes. 21st Nordic Seminar on Compuational Mechanics (T. Kvamsdal, K.M. Mathisen and B. Pettersen Eds.), pp. 108-111. ISBN/ISSN: 978-84-96736-56-6
Larsson, Ragnar; Landervik, Mats: Multi-Scale Homogenization of Thin Foam Layers using Shell Theory . Proc. 8th. World Congress on Computational Mechanics (WCCM8),
Wysocki, Maciej; Toll, Staffan; Larsson, Ragnar; Asp, Leif: Hyperelastic Constitutive Models for Consolidation of Commingled Yarn Based Composites. proceedings of 9th International Conference on Flow Processes in Composite Materials,
Wysocki, Maciej; Asp, Leif; Toll, Staffan; Larsson, Ragnar: TWO-PHASE CONTINUUM MODELLING OF COMPOSITES CONSOLIDATION. Proc. of 13th European Conference on Composite Material, Stockholm, Sweden,
Zhang, Yan; Liu, Johan; Larsson, Ragnar; Watanabe, Itsuo: Experimental Investigation and Micropolar Modelling of the Anisotropic Conductive Adhesive Flip-Chip Interconnection. Journal of Adhesion Science and Technology, 22 pp. 1717–1731.
Zhang, Yan; Liu, Johan; Larsson, Ragnar: Experimental and Modeling of the Stress-Strain Behavior of a BGA Interconnect Due to Thermal Load. Journal of Electronic Packaging, 130 (2)
Zhang, Yan; Larsson, Ragnar; Fan, Jing-yu; Liu, Johan: Micropolar Cohesive Zone Model for Delamination Failure in Microsystem Interconnects. Proceedings of the 22nd International Congress of Theoretical and Applied Mechanics, ISBN/ISSN: 978-0-9805142-0-9
Zhang, Yan; Larsson, Ragnar; Liu, Johan: Understanding BGA interconnect interface behaviour using Micropolar theory. Journal of Electronics Packaging,
2007Fagerström, Martin; Larsson, Ragnar: Thermo-mechanical Modeling of Ductile Crack Propagation with Application to High Velocity Cutting. 9th US National Congress on Computational Mechanics, CD , (1p abstract)
Hård af Segerstad, Per; Larsson, Ragnar; Toll, Staffan: An approach to model dissipative open-cell cellular solids at finite deformation. Euromech Colloquium 489 - "Modelling Multiphase Materials", Chalmers, Göteborg, Sweden, Sept. 19 - 21,
Hård af Segerstad, Per; Larsson, Ragnar; Toll, Staffan: On the modelling of open-cell cellular solids subjected to high compressive deformations. Proceedings of the 20th Nordic Seminar on Computational Mechanics, 23-24 November, Gothenburg, Sweden,
Landervik, Mats; Larsson, Ragnar: Multi-scale homogenization of thin foam layers. Proceedings of the 20th Nordic Seminar on Computational Mechanics, 23-24 November, Gothenburg, Sweden,
Landervik, Mats; Larsson, Ragnar: Pore-gas interaction in foams at finite deformation using staggered solution techniques. Euromech Colloquium 489 - "Modelling Multiphase Materials", Chalmers, Göteborg, Sweden, Sept. 19 - 21,
Landervik, Mats; Larsson, Ragnar: Pore–gas interaction in foams at finite deformation using staggered solution techniques . Computer Methods in Applied Mechanics and Engineering , 197 pp. 148-159.
Larsson, Ragnar; Stefan, Diebels: A second-order homogenization procedure for multi-scale analysis based on micropolar kinematics. International Journal for Numerical Methods in Engineering, 69 pp. 2485-2512.
Larsson, Ragnar; Fagerström, Martin: Approaches to dynamic fracture modelling at finite deformations. International Symposium on Defect and Material Mechanics, ISDMM 2007, March 25-29Aussois, France,
Larsson, Ragnar; Zhang, Yan: Homogenization of microsystem interconnects based on micropolar theory and discontinuous kinematics. Journal of the Mechanics and Physics of Solids, 55 pp. 819-841.
Wysocki, Maciej; Larsson, Ragnar; Toll, Staffan: Constitutive models for consolidation of commingled yarn based composites. Euromech Colloquium 489 - "Modelling Multiphase Materials", Chalmers, Göteborg, Sweden, Sept. 19 - 21,
Wysocki, Maciej; Toll, Staffan; Larsson, Ragnar: Press forming of commingled yarn based composites: The preform contribution. Composites Science and Technology, 67 (3-4) pp. 515-524.
Zhang, Yan; Larsson, Ragnar; Fan, Jing-yu; Liu, Johan: Interface modelling microsystem interconnections using micropolar theory and discontinuous approximation. Computers & Structures, 85 (19-20) pp. 1500-1513.
Zhang, Yan; Larsson, Ragnar: Micropolar Delamination Modelling for ACF Flip-chip Joints in Microsystem. Proceedings of the 20th Nordic Seminar on Computational Mechanics, 23-24 November, Gothenburg, Sweden,
Zhang, Yan; Liu, Johan; Larsson, Ragnar: PBGA Interconnect Behavior under Thermal Effects. Proceedings of International Conference on Electronics Packaging (ICEP2007), Tokyo, Japan, pp. 329-334.
Zhang, Yan; Liu, Johan; Fan, Jing-yu; Larsson, Ragnar: Second order multi-scale micropolar model for microsystem interconnections. Proceedings of the Fifth International Conference on Nonlinear Mechanics (ICNM-V), pp. 1434-1439. ISBN/ISSN: ISBN: 978-7-81118-164-7
2006Fagerström, Martin; Larsson, Ragnar: A rate-dependent thermo-mechanical cohesive zone model formulated in the context of PUFEM fracture modelling. Proceedings of 7th World Congress on Computational Mechanics, Los Angeles, California, USA, July 16-22, 2006 ,
Fagerström, Martin; Larsson, Ragnar: Theory and numerics for finite deformation fracture modelling using strong discontinuities. International Journal for Numerical Methods in Engineering, 66 (6) pp. 911-948.
Hård af Segerstad, Per; Larsson, Ragnar; Toll, Staffan: Micro-mechanical model of a viscoplastic open-cell foam. Proc. 6th European Solid Mechanics Conference (ESMC 2006), 28 Aug. - 1 Sept. 2006, Budapest, Hungary ,
Hård af Segerstad, Per; Larsson, Ragnar; Toll, Staffan: Micromechanical model of a dissipative open-cell cellular solid. Proceedings of the 6th European Solid Mechanics Conference, Budapest,
Landervik, Mats; Larsson, Ragnar: Pore-gas interaction in polymeric foam with respect to energy absorption. Proc. III European Conference on Computational Mechanics - Solids, Structures and Coupled problems in Engineering, (ECCM-2006), June 5-9, Lisbon, Portugal ,
Larsson, Ragnar; Fagerström, Martin: Finite Deformation Fracture Modelling of a Thermo-Mechanical Cohesive Zone. Proceedings of 3rd European Conference on Computational Mechanics, Lisbon, Portugal, June 5-9, 2006,
Larsson, Ragnar; Zhang, Yan: Higher Order Homogenization of a Microsystem Interface Based on Micropolar Theory. Proc. 6th European Solid Mechanics Conference (ESMC 2006), 28 Aug. - 1 Sept. 2006, Budapest, Hungary ,
Zhang, Yan; Larsson, Ragnar; Fan, Jing-yu; Cheng, Zhaonian; Liu, Johan: Homogenization Model Based on Micropolar Theory for the Interconnection Layer in Microsystem Packaging. Proceedings of the eight IEEE CPMT International Symposium on High Density Packaging and Component Failure Anlaysis (HDP´06), pp. 166-170.
Zhang, Yan; Larsson, Ragnar; Liu, Johan: Interface Modelling of ACA Interconnects Using Micropolar Theory. Proc.2006 Conference on High Density Microsystem Design, Packaging and Failure Analysis, June 27-30, Shanghai, China ,
Zhang, Yan; Larsson, Ragnar; Fan, Jing-yu; Liu, Johan: Study on the Multi-Scale Properties of the Internal Structure in ACA Interconnection. Proc. 1 st Electronics Systemintegration Technology Conference, 2006 (ESTC 2006), 5 - 7 Sept. 2006, Dresden, Germany, 2 pp. 757-761. ISBN/ISSN: 1-4244-0553-x
2005Fagerström, Martin; Larsson, Ragnar: Finite deformation fracture modelling using direct/inverse strong discontinuities. Computational Plasticity VIII - Fundamentals and applications, D.R.J. Owen, E. Onate, and B. Suarez, CIMNE, Barcelona, pp. 450-453 .
Fagerström, Martin; Larsson, Ragnar: Inverse Discontinuity Formulation of Fracture. 11th International Conference on Fracture,
Hård af Segerstad, Per; Larsson, Ragnar; Toll, Staffan: Micro-mechanical model of a viscoplastic open-cell foam. Computational Plasticity VIII - Fundamentals and applications, D.R.J. Owen, E. Onate, and B. Suarez, CIMNE, Barcelona, pp. 755-758 .
Hård af Segerstad, Per; Larsson, Ragnar; Toll, Staffan: Micromechanical model of a viscoplastic open-cell foam. Proceedings of the VIII International Conference on Computational Plasticity, COMPLAS VIII, Barcelona ,
Landervik, Mats; Larsson, Ragnar: Modeling of large inelastic deformations of a structural foam at high deformation rates. ", Computational Plasticity VIII - Fundamentals and applications, D.R.J. Owen, E. Onate, and B. Suarez, CIMNE, Barcelona, pp. 119-122.
Larsson, Ragnar; Fagerström, Martin: A framework for fracture modelling based on the material forces concept with XFEM kinematics. Int. J. Numer. Meth. Engng., 62 pp. 1763-1788.
Larsson, Ragnar; Ebinger, Tobias; Diebels, Stefan: A second order homogenization procedure for multi-scale analysis based on nonlinear micro-polar kinematics. Computational Plasticity VIII - Fundamentals and applications, D.R.J. Owen, E. Onate, and B. Suarez, CIMNE, Barcelona, pp. 1166-1169 .
Larsson, Ragnar; Fagerström, Martin: An interface cohesive zone model based on an inverse strong discontinuity formulation. Mechanics of Material Forces; (Advances in Mechanics and Mathematics, Vol. 11) ; Steinmann, Paul; Maugin, Gérard A. (Eds.), pp. Chapter 27. ISBN/ISSN: 0-387-26260-1
Larsson, Ragnar; Fagerström, Martin: Inverse discontinuity formulation of fracture. J. Struct. Mech. - Rakenteiden Mekaniikka, 38 (3) pp. 27-30.
Larsson, Ragnar; Landervik, Mats: Modeling of large inelastic deformations of foam with respect to energy absorption. Poromechanics III, Biot Centennial Conference, Oclahoma City, May 24-27, 2005, pp. 95-100. ISBN/ISSN: 04 1538 041 3
Toll, Staffan; Larsson, Ragnar; Wysocki, Maciej; Asp, Leif: Process rheology of fibre composites. Proc. Nordiska Polymerdagarna, August 17-19, Gothenburg, Sweden,
Wysocki, Maciej; Asp, Leif; Toll, Staffan; Larsson, Ragnar: Finite element model for axisymmetric consolidation of thermoplastic composite materials. Proc. ASC 20th Annual Technical Conference, September 7-9, Philadelphia, USA ,
Wysocki, Maciej; Larsson, Ragnar; Toll, Staffan: Hydrostatic consolidation of fibre composites. Composites Science and Technology, 65 pp. 1507-1519.
Zhang, Yan; Larsson, Ragnar; Fan, Jingyu; Liu, Johan: Interface Modelling of an ACA Interconnect Using Micropolar Theory and Discontinuous Approximation. Proceedings of the 7th International IEEE CPMT Conference on High Density Microsystem Design, Packaging and Failure Analysis (HDP05), pp. pp115-119.
Zhang, Yan; Larsson, Ragnar; Fan, Jing-yu; Liu, Johan: Interface Modelling of an ACA Interconnect Using Micropolar Theory and Discontinuous Approximation. Proc. The 5th Int. IEEE Conference on Polymers and Adhesives in Microelectronics and Photonics, (Polytronic 2005), October 23-26, Warsaw, Poland ,
Zhang, Yan; Larsson, Ragnar; Fan, Jingyu; Cheng, Zhaonian; Liu, Johan: Microsystem Interconnections Modelling Using Micropolar Theory and Discontinuous Approximation. Proceedings of 5th International Conference on Polymers and Adhesives in Microelectronics and Photonics (Polytronic 2005), pp. 176-179.
2004Larsson, Ragnar: A Discontinuous Shell-Interface Element for Delamination Analysis of Laminated Composite Structures. Comp. Meth. Appl. Mech. Engng, 193 pp. 3173-3194 .
Larsson, Ragnar; Toll, Staffan; Wysocki, Maciej: Process modeling of composites using two-phase porous media theory. Eur. J. Mech. A/Solids, 23 pp. 15-36 .
2003Fagerström, Martin; Larsson, Ragnar: Sprickmodellering enligt konceptet med materiella krafter. Svenska Mekanikdagar, Göteborg, 2003, pp. 1p abstract.
Jansson, Niklas; Larsson, Ragnar: Rotational Interface Formulation for Delamination Analysis of Composite Laminates. Computers and Structures, 81 pp. 2705-2716 .
Wysocki, Maciej; Larsson, Ragnar; Toll, Staffan: Modelling press forming of fibre composites using two-phase continuum theory. Polish.Swedish Symposium, Gothenburg, Dec 12, 2003,