Finite Element Analysis for Aluminium Alloy 7075-T6 Subjected to the Bending-Torsional Variable Phase of Fatigue Loading

Abstract

In this study, the fatigue behaviour of the alloy structure of Aluminium alloy 7075-T6 is investigated numerically. Three main factors were taken into account when researching the alloy composition of aluminium alloy 7075-T6: life prediction, damage indicator, and Biaxiliray indexation. A prediction of life expectancy seems to be the most reliable indication. Experiments have been carried out with the stress totally inverted as the variable in order to determine whether or not the phenomena of exhaustion can be described by the theory proposed by GoodMan. It was determined that the dynamic load of 100 kilonewtons (kN) and 1100 nanometers (Nm) was used in order to produce estimates for these characteristics. In order to assist us in gaining a better understanding of these characteristics, it has approximated them by making use of the dynamic load that was applied. An increase in the main force to 100 kilonewtons would bring the expected lifetime up to 141 cycles, according to the findings of the computer research. In this regard, the findings of the inquiry provided evidence. The findings demonstrated that this is really the case. The Biaxiliray indexation obtained a value of 0.46 when subjected to the same stress conditions. The numerical results demonstrated that the damage is obvious during the first 10E32 cycles of stress, which is in addition to the research that have been conducted on damage indicators. These findings were demonstrated not just through theoretical study of the damage indicator but also via practical numerical data.