On the Alternate Direction Implicit ADI Method for Solving Heat Transfer in Composite StampingReport as inadecuate




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Thermostamping of thermoplastic matrix composites is a process where a preheated blank is rapidly shaped in a cold matching mould. Predictive modelling of the main physical phenomena occurring in this process requires an accurate prediction of the temperature field. In this paper, a numerical method is proposed to simulate this heat transfer. The initial three-dimensional heat equation is handled using an additive decomposition, a thin shell assumption, and an operator splitting strategy. An adapted resolution algorithm is then presented. It results in an alternate direction implicit decomposition: the problem is solved successively as a 2D surface problem and several one-dimensional through thickness problems. The strategy was fully validated versus a 3D calculation on a simple test case and the proposed strategy is shown to enable a tremendous calculation speed up. The limits of applicability of this method are investigated with two parametric studies, one on the thickness to width ratio and the other one on the effect of curvature. These conditions are usually fulfilled in industrial cases. Finally, even though the method was developed under linear assumption constant material properties, the strategy validity is extended to multiply, temperature dependant nonlinear case using an industrial test case. Because of the standard methods involved, the proposed ADI method can readily be implemented in existing software.

KEYWORDS

Thin Plates, Alternate Direction Implicit, Shell Theory, Operator Splitting, In-Plane Variations

Cite this paper

Levy, A. , Hoang, D. and Corre, S. 2017 On the Alternate Direction Implicit ADI Method for Solving Heat Transfer in Composite Stamping. Materials Sciences and Applications, 8, 37-63. doi: 10.4236-msa.2017.81004.





Author: Arthur Levy1, Duc Anh Hoang1,2, Steven Le Corre1

Source: http://www.scirp.org/



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