Introduction to Fatigue Analysis
Fatigue damage is a significant threat for developers, manufacturers and vendors of many products. A high number of recalls within the automotive industry and spectacular accidents of trains and airplanes dramatically emphasize that. Fatigue damage might bear high risk to human life and financial stability of manufacturers like OEMs in transportation industry. Failure due to cyclic loading of products during service also has a great impact on the image of a car manufacturer and therefore should be avoided. Fatigue is a complex issue with many different factors influencing durability and involving large scatter of individual parameters like loads or material data. Experimental as well as virtual methods are available to investigate the risk of a product failure due to cyclic loading. Modern simulation methods, like the finite element method, require specific emphasis on modeling for the assessment of stresses suitable for further fatigue postprocessing. This seminar provides insight into modern durability analysis covering everything from issues of required experimental tests to stress analysis using the FEM and an introduction of different concepts for computational durability assessment. Statistical aspects of fatigue data and probability issues on product reliability will be covered as well. Several examples will be presented and discussed.
Who should attend?
The seminar is aimed at product developers, analysis engineers and managers who are responsible for product reliability involving cyclic loading and durability.
- Fatigue damage, examples and mechanisms
- What stresses do I need? Modeling and stress analysis using FEA for durability
- Obtaining SN-curves and statistical issues involved
- Cycle counting
- Factors affecting fatigue life and synthetic SN-curves
- Stress based and strain based fatigue evaluation
- Introduction to multiaxial fatigue theories
Prof. Dr.-Ing. Klemens Rother
Munich University of Applied Sciences
Prof. Dr.-Ing. Klemens Rother studied mechanical engineering at Munich University of Applied Sciences and the Department of Mechanics, Metallurgy and Materials Science at Michigan State University, East Lansing, USA. He earned his doctorate in the field of computational durability at University of Dortmund. Since 1986 he has been working in various positions in industry, e.g. more than 15 years in senior management for structural integrity and CAE consulting services. Since 2008 he is professor at the University of Applied Sciences in Munich, faculty of mechanical, automotive and aircraft engineering. He teaches strength, lightweight design, durability and conceptual design. He is also head of a master’s program in computational engineering. His main research focuses on CAx-supported product development and structural integrity.
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