  Proceedings of the Fourth International Conference on Advanced Computational Methods in Engineering (ACOMEN 2008)Hogge, Michel  ; ; et alin Journal of Computational and Applied Mathematics (2010), 234(7), Detailed reference viewed: 61 (26 ULg)Application of genetic algorithms to lubrication pump stacking designKelner, Vincent ; Léonard, Olivier in Journal of Computational and Applied Mathematics (2004), 168(1-févr Sp. Iss. SI), 255-265 Sizing a pump stacking used in an aircraft lubrication system is a challenging task. The combination of several pumps, in parallel and in a single casing, must deliver specified oil flow rates, on a ... [more ▼] Sizing a pump stacking used in an aircraft lubrication system is a challenging task. The combination of several pumps, in parallel and in a single casing, must deliver specified oil flow rates, on a variable number of circuits, and under given flight conditions. Furthermore, the optimal assembly has to minimize overall dimensions, weight and cost. This optimization problem involves a large space search, continuous and discrete variables and multi-objectives. Genetic Algorithms (GA)-stochastic search methods that mimic the metaphor of natural biological evolution-seem well suited to solve that kind of problems. A new GA is proposed. The efficiency of this GA is first demonstrated in solving various mathematical test-cases and then applied to the industrial problem. (C) 2003 Elsevier B.V. All rights reserved. [less ▲] Detailed reference viewed: 7 (2 ULg) Machining processes simulation: specific finite element aspectsMasset, Luc ; Debongnie, Jean-François in Journal of Computational and Applied Mathematics (2004), 168(issues 1-2), 309-320 The paper presents a simulation tool designed to predict form errors of part surfaces obtained by face milling and turning processes. For these operations, the form error is often due to the flexibility ... [more ▼] The paper presents a simulation tool designed to predict form errors of part surfaces obtained by face milling and turning processes. For these operations, the form error is often due to the flexibility of the workpiece and its supports. The finite element method is adopted to model the part geometry and to compute its deformations. Numerous load cases are required to obtain the form error so that classical resolution methods prove to be inefficient (CPU time, memory and disk space). The paper mainly focuses on the special computation scheme adopted in order to improve the resolution of such an atypical problem. (C) 2003 Elsevier B.V. All rights reserved. [less ▲] Detailed reference viewed: 35 (10 ULg) |
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