Analysis of the Deformation and of the Stress Intensity Factor on a Simplified Cylinder Head of a Variable Compression Rate Engine

International Journal of Mechanical Engineering

© 2022 by SSRG - IJME Journal

Volume 9 Issue 3

Year of Publication : 2022

Authors : Jules Fridolin Bayol, Louis Monkam, Samuel Epesse Misse

10.14445/23488360/IJME-V9I3P101

How to Cite?

Jules Fridolin Bayol, Louis Monkam, Samuel Epesse Misse, "Analysis of the Deformation and of the Stress Intensity Factor on a Simplified Cylinder Head of a Variable Compression Rate Engine," SSRG International Journal of Mechanical Engineering, vol. 9,  no. 3, pp. 1-14, 2022. Crossref, https://doi.org/10.14445/23488360/IJME-V9I3P101

Abstract:

This work contributes to the evaluation of the risk of propagation of crack on a cylinder head subjected to the pressure of the combustion chamber of an engine with variable compression rate whose numerous scientific researches demonstrated its energy advantages compared to the conventional engine. the analytical approach is characterized by using the Love-Kirchhoff theory, the Navier method, to determine the expression of the deformation and the integral J of Rice to determine the expression of the intensity factor of constraints (FIC). in addition, the numerical approach is characterized on the one hand by simulations on the COMSOL multiphysics software to determine the numerical values of the deformation and all the associated curves, by simulations on MATLAB from the analytical expressions of the deformation and the FIC to obtain their numerical values and the associated curves, on the other hand employing the least-squares method (MMC), which by simulations on MATLAB at starting from the numerical values of the FIC makes it possible to obtain another expression of the latter. Thus this work allows the appreciation of the life of the cylinder head, the mastery of the dimensioning of the cylinder head to avoid its rupture, a technological mastery in the design of the engines of the machines of the Cameroonian automotive sector, the presentation of another approach of engineering in the theory of linear elasticity and fracture mechanics concerning a thin plate simply supported and requested in simple bending.

Keywords:

Love-Kirchhoff, Rice J integral, FIC, COMSOL multiphysics, MATLAB, MMC.

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