Abstract

The objective of this work is to analyze some geometrical effect to predict the damage of aluminum 2024T3 structure after validate numerical model by experimental test. The mechanical of damage behaviour under tensile tests of several plates with notches of various forms are investigated using an XFEM technique. The finite element analysis is performed to determine the failure load of these plates. Four different form of notched plates in another part of this work are reinforced by a thickness augmentation with different shapes around the notch. The results of the tensile analysis show that the reinforcements gives the best increase in failure load of each plates.

Highlights

  • Structures used in aeronautical, aerospace and aircraft are often exposed to extreme operating conditions, overload, fatigue and other reasons in service or because of internal defects [1]

  • Torbani [10] investigated the damage of an O, U, V-shaped slotted plate where he used the point stress criterion combined with the equivalent material concept, he concluded that the accuracy of each failure criterion depends on essentially the characteristic of the notch and the distribution of stresses around the edge of the notch

  • The objective of this study is to evaluate by numerical simulation the effect of dimension and localization of notch on resistance of a plate type Aluminum under damage behavior by tensile load

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Summary

Introduction

Structures used in aeronautical, aerospace and aircraft are often exposed to extreme operating conditions, overload, fatigue and other reasons in service or because of internal defects [1]. The present work uses numerical validation framework of the research works experimentally carried out by Madani et al [6] who analyzed five different forms of notches in aluminum plates repaired by composite patches They compared with unrepaired plates and they found that the reduced repair mean of 20% damage for all models. Torbani [10] investigated the damage of an O, U, V-shaped slotted plate where he used the point stress criterion combined with the equivalent material concept, he concluded that the accuracy of each failure criterion depends on essentially the characteristic of the notch and the distribution of stresses around the edge of the notch Other researchers such as berto and all [11] have worked on uniaxial and multiaxial fatigue for different types of notches. The analysis of the numerical results show that the failure load increases as the notched plate has reinforced geometric around the notch

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