Felix Reissner is a mechanical engineer specializing in FEM-Simulation, fatigue design, softwarechains, and lifetime estimation. With degrees in Mechanical Engineering from TU Darmstadt, he works as a research assistant at Fraunhofer Institute for Structural Durability and System Reliability LBF. His research involves using advanced computational techniques like FEM-Simulation to analyze how mechanical components behave under different loads. This helps improve fatigue design methods, making engineering systems more durable and reliable. Felix also develops and implements softwarechains to optimize engineering processes, enhancing efficiency. He focuses on accurately estimating component lifetimes by using comprehensive models and data-driven approaches, providing precise predictions for operational lifespan.
Shot peening is commonly used to improve the fatigue strength of mechanical components. The peening process involves the use of high-energy mechanical impacts to create compressive residual stresses and a material hardening on the surface of the component, which can significantly increase its resistance to fatigue. Accurate lifetime prediction is important for optimizing the design of shot-peened components and ensuring their reliability and safety. Due to nonlinear material behavior and the simulation of contact, estimating the lifetime of shot-peened shaft bores under cyclic loading conditions remains a challenge.
In this study, the lifetime estimation of shot-peened shaft bores using a combination of experimental testing and finite element analysis is investigated. A series of experiments was conducted on shot-peened shaft bores made of EN-GJS-700 and 34CrNiMo6, using different peening parameters such as intensity and coverage. The specimens with shot-peened shaft bores were subjected to cyclic loading in a fatigue testing machine and the lifetime was experimentally identified.
The results were used to develop a methodology based on finite element analysis, which considers the effect of the shot peening parameters on the residual stress distribution, hardening and the resulting fatigue life. The results of the proposed methodology were validated against the experimental data and showed good agreement with the experimental results.
The derived methodology can be used to estimate the lifetime of shot-peened shaft bores under different loading and peening conditions and provides a useful tool for optimizing the design of shot-peened components in fatigue engineering applications.
|Room 9||Wednesday 29th November||15:30-16:00||Felix‐Christian Reissner|
S08-1 Fatigue and manufacturing process
34 - Improved Lifetime Estimation of Shot-Peened Shaft Bores Using a Numerical Approach