Recueil de mécanique


The ''Recueil de mécanique'' abbreviated RDM is an international, peer-reviewed journal. It is edited by El-Wancharissi university of Tissemsilt. Starting from the vol.5 n°1 (January 2020) is accepted for review only English written manuscript. RDM is an open access journal which means that all content is freely available without charge. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles in this journal without asking prior permission from the publisher or the author. Focus and Scope: The periodic covers a significant number of thematic. For illustration and not limited to the following topics are treated: -power plants (conventional and hybrid, stationary and on board); -thermal science; -thermodynamics; -fluid mechanics; -mathematical modeling of systems and processes;-renewable energy (solar, wind, geothermal, tidal powered, etc ...) processes and technologies; -mechanical contacts and tribology; -machines dynamics, vibration, acoustic and maintenance; -engineering; -aerospace engineering; -automotive engineering; -computational mechanics; -industrial and manufacturing engineering; -mechanical engineering; -...etc. In addition to original articles, the journal is also dedicating special issues to seminars and colloquium works. Peer Review Process: The ''Recueil de mécanique'' operates a double blind review process. All contributions will be initially assessed by the editor for suitability for the journal. Papers deemed suitable are then typically sent by the editor or the associated editors to a minimum of two independent expert reviewers to assess the scientific quality of the paper. The Editor is responsible for the final decision regarding acceptance or rejection of articles. Publication Frequency: The ''Recueil de mécanique'' is published twice a year in December and July with two regular issues (not including special issues) and one volume per year. RDM is indexed in DOAJ Sherpa/Romeo, ULRICHSWEB and Copernicus databases.







Numerical simulation of axial LDPE polymer flow in an extrusion die

نهاري الطيب, 

Résumé: A numerical study was carried out to study the rheological characteristics of the LDPE polymer in extrusion through a simple axisymmetric matrix. This polymer is considered a generalized Newtonian fluid that follows Cross law. In order to improve this extruder the influence of certain parameters on the velocity field, viscosity, pressure and shear rate was studied. This study shows us clearly that the increase in the output diameter of the matrix makes the characteristics of the extrusion uniform.

Mots clés: Rhéologie ; extrudate ; laminar flow ; polymer

Numerical analysis of the effect of the adhesive shear modulus on a corroded, cracked and repaired plate in mixed mode.

براحو محمد,  سالم مقدم,  سرير محمد, 

Résumé: The objective of this work concerns a numerical analysis by the three-dimensional finite element method, of the repair by simple composite patch of corroded and cracked Al 2024- T3 plates with a crack inclined to the horizontal at an angle teta=30. The effect of the adhesive shear modulus on the damaged area and on the DR damaged area ratio was considered. Then the effect of this parameter on the values of the DR and the J integral. The results obtained show the rectangular shape is the best because it makes it possible to obtain the lowest values of the J integral. In addition, it is best to use the elliptical shape after analyzing the results for the damaged area (DR) ratio.

Mots clés: Ratio DR; Jintégral ; mechanical loading; FEM ; Ratio DR ; Jintégral ; mechanical loading ; FEM