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Genre/Form: | Thèses et écrits académiques |
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Material Type: | Document, Thesis/dissertation, Internet resource |
Document Type: | Internet Resource, Computer File |
All Authors / Contributors: |
Thiết Lập Nguyễn; Dominique Souchet; Aurelian Fatu; Olivier Bonneau, professeur).; François Robbe-Valloire; Traian Cicone; Bernard Villechaise; Abdelghani Maoui; Văn Bang Nguyễn; Université de Poitiers.; École doctorale Sciences et Ingénierie des Matériaux, Mécanique, Energétique et Aéronautique (Poitiers / 2009-2018).; Pôle poitevin de recherche pour l'ingénieur en mécanique, matériaux et énergétique - PPRIMME (Poitiers).; Université de Poitiers. UFR des sciences fondamentales et appliquées. |
OCLC Number: | 918978236 |
Notes: | Titre provenant de l'écran-titre. |
Description: | 1 online resource |
Responsibility: | Thiết Lập Nguyễn ; sous la direction de Dominique Souchet et de Aurelian Fatu. |
Abstract:
The connecting rod is not a single body but a multi-body solid. A non-appropriate screw tightening, coupled with the solid discontinuities, can lead to undesirable phenomena such as the rotation of the shell in its housing. Despite modern numerical tools, capable to predict the bearing EHD behaviour, there are still many damages related to cumulative microslip between the bearing shell and the conrod body. The difficulty of modelling the shell/conrod contact is mainly due to the interaction between the solids and the operating conditions. This study presents a solution to analyse this problem, by coupling an elastohydrodynamic (EHD) software (ACCEL) with a commercial software (ABAQUS) able to predict the frictional contact between the shell and the conrod. After a literature review of previous studies dedicated to the numerical and experimental modelling of connecting rod bearings, the first part is dedicated to a description of the numerical models used to predict the EHD behaviour of lubricated bearings. Follows the presentation of the techniques used to study the dry frictional contact mechanics. The next part presents the adopted solution used to couple the two software. The model was first validated in the case of a bearing submitted to a rotating load. Subsequently, several parametric calculations are presented. We were able to show the influence of the operating conditions (load diagram, velocity,...) as well as other characteristics of the conrod (friction coefficient, thickness of the shell, etc.) on the performances of the bearing and more exactly on the microslip between the shells and the conrod body.
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