![]() Augmented Lagrangian procedure for implicit computation of contact-impact between deformable bodies.; Ponthot, Jean-Philippe ; Stainier, Laurent ![]() in International Journal of Crashworthiness (2001), 6(2), 209-221 This paper shows how efficiency can be improved by using an adequate Augmented Lagrangian procedure instead of the classical and well-known Penalty method for solving contact-impact problems between ... [more ▼] This paper shows how efficiency can be improved by using an adequate Augmented Lagrangian procedure instead of the classical and well-known Penalty method for solving contact-impact problems between deformable bodies, including frictional contact, large deformations, dynamical effects and inelasticity phenomena The Augmented Lagrangian method has already enjoyed great success in solving constrained minimisation problems or incompressibility conditions. Alternatives to existing automation techniques for augmentations are presented. Starting from a Penalty method, it will be seen how the Augmented Lagrangian decreases ill-conditioning of governing equations and gives a more precise solution with a lower CPU-cost. Several original simultaneous criteria are proposed for optimising the number and the location of the augmentations in an incremental implicit resolution. Application of the method is done for two axisymmetric impact problems. [less ▲] Detailed reference viewed: 27 (1 ULg)![]() STAINIER; Ponthot, Jean-Philippe ; Stainier, Laurent ![]() in Proceedings of IJCRASH 2000 (2000) Detailed reference viewed: 10 (2 ULg) Efficient implicit schemes for the treatment of the contact between deformable bodies. Application to shock absorber devices; Stainier, Laurent ; Ponthot, Jean-Philippe ![]() in Proceedings of the Fifth National Belgian Congress on Theoretical and Applied Mechanics (2000) Detailed reference viewed: 11 (6 ULg) Numerical simulation of shock-absorber devices for crashworthiness : explicit vs implicit formulationPonthot, Jean-Philippe ; in 32nd ISATA, International Symposium on Automotive Technology and Automation, special session on Automotive Crashworthiness, paper 99 SF004 (1999, June) Detailed reference viewed: 24 (1 ULg)![]() Efficient Implicit Schemes for Finite Element Impact SimulationPonthot, Jean-Philippe ; in International Journal of Crashworthiness (1999), 4(3), 273-285 Detailed reference viewed: 9 (4 ULg) Efficient Implicit Schemes for High-Speed Dynamics and Crash Simulation. Application to shock-absorber devicesHogge, Michel ; ; Ponthot, Jean-Philippe ![]() in Proceedings of «ACOMEN’98», Advanced Computational Methods in Engineering: Invited Papers (1998, September) Detailed reference viewed: 18 (1 ULg) An Efficient Implicit Scheme for the Treatment of Contact between Deformable Bodies; Ponthot, Jean-Philippe ![]() in . Proceedings of "NUMIFORM'98, Simulation of Materials Processing: Theory, Methods and Applications (1998, June) Detailed reference viewed: 3 (1 ULg) Numerical Modeling of Tribological Devices Using Various Contact Algorithms; ; et al in Proceedings of “NUMIFORM’98, Simulation of Materials Processing: Theory, Methods and Applications (1998, June) Detailed reference viewed: 9 (1 ULg)![]() An Efficient Implicit Scheme for the Treatment of Frictional Contact between Deformable Bodies; Ponthot, Jean-Philippe ![]() in Proceedings of "First ESAFORM Conference on Material Forming" (1998) Detailed reference viewed: 2 (1 ULg)![]() Contact Algorithms for Numerical Modeling of Tribological Devices; ; et al in Proceedings of "First ESAFORM Conference on Material Forming (1998) Detailed reference viewed: 105 (0 ULg) |
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