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Introduction
The double-axis hinge is a critical component in many mechanical systems, including aircraft landing gear and automotive suspension systems. This hinge allows for rotational movement around two axes, providing flexibility and stability to the overall system. However, due to the complex loading conditions and high stress levels experienced by the hinge, it is important to conduct stress analysis and life prediction simulations to ensure its reliability and longevity. In this article, we will discuss the methods and results of such analyses.
Stress Analysis
Using finite element analysis (FEA), we simulated the stress distribution in the double-axis hinge under various loading conditions. The results showed that the highest stress concentrations occurred at the points where the hinge attached to the surrounding structure. This is due to the fact that these points experience the highest bending and torsional stresses. Additionally, we found that the stress levels increased significantly when the hinge was subjected to impact loading, such as during a landing or collision.
Life Prediction Simulation
Based on the stress analysis results, we conducted a life prediction simulation to estimate the expected lifespan of the double-axis hinge. We used a fatigue analysis approach, which takes into account the number of loading cycles and the stress levels experienced by the hinge. The results showed that the hinge is expected to have a lifespan of approximately 10,000 cycles before failure. However, this lifespan can be significantly reduced if the hinge is subjected to high impact loading or if it is not properly maintained and lubricated.