Modelling of shrinkage formation in casting by the phase field method
Article dans une revue avec comité de lecture
JournalInternational Journal of Material Forming
Most commercial softwares simulating casting process use a scalar field to quantify the shrinkage on final parts. The repartition of this scalar is used to localize shrinkage in the part. In this work, the objective is to use a new approach to predict morphological information about size and shape of shrinkage: the phase field method. This method is based on a parameter order defining the alternating zones metal/gas. Starting with a uniform unit value of this scalar, the phase field equation is modified with a nucleation process predicting the growth of the air phase into the metal one still liquid. The coupling with the Navier-Stokes equation brings up some interesting non-dimensional parameters that affect shrinkage morphology. This is what we have tried to analyse after proposing the modified phase fields formalism. Even if we are not yet in the predictive stage, we present in the end of this paper a numerical/experimental comparison showing the potentiality of the developed approach.
Files in this item
Showing items related by title, author, creator and subject.
Article dans une revue avec comité de lectureNOURI, Madyen; ARTOZOUL, Julien; CAILLAUD, Aude; AMMAR, Ammar; CHINESTA, Francisco; KÖSER, Ole (Springer Science and Business Media LLC, 2022-03-25)Several defects might affect a casting part and degrade its quality and the process efficiency. Porosity formation is one of the major defects that can appear in the resulting product. Thus, several research studies aimed ...
Effect of arteriolar distensibility on the lateral migration of liquid-filled microparticles flowing in a human arteriole Article dans une revue avec comité de lectureA promising advance of bioengineering consists in the development of micro-nanoparticles as drug delivery vehicles injected intravenously or intraarterialy for targeted treatment. Pro cient functioning of drug carries is ...
Numerical investigation of the dynamical behavior of a fluid-filled microparticle suspended in human arteriole Article dans une revue avec comité de lectureThe study of artificial microparticles (capsules and vesicles) has gained a growing interest with the emergence of bioengineering. One of their promoting applications is their use as therapeutic vectors for drug delivery, ...
Communication avec acteNASRI, Mohamed Aziz; AGUADO, Jose Vicente; AMMAR, Amine; CUETO, Elias; CHINESTA, Francisco; MOREL, Franck; ROBERT, Camille; EL AREM, Saber (Key Engineering Materials, 2015)Forming processes usually involve irreversible plastic transformations. The calculation in that case becomes cumbersome when large parts and processes are considered. Recently Model Order Reduction techniques opened new ...
Proper Generalized Decomposition (PGD) for the numerical simulation of polycrystalline aggregates under cyclic loading Article dans une revue avec comité de lectureNASRI, Mohamed Aziz; AMMAR, Amine; ROBERT, Camille; EL AREM, Saber; MOREL, Franck (Elsevier Masson, 2018)The numerical modelling of the behaviour of materials at the microstructural scale has been greatly developed over the last two decades. Unfortunately, conventional resolution methods cannot simulate polycrystalline ...