Abstract
High dynamic forces based on small radii and rail transitions result in increasing loads on switch components. This demands improved wear resistance and the assessment of high strength materials. The implementation of new materials requires new design concepts taking into account the damage tolerance behavior of high strength materials in switch components.Therefore, a concept for the assignment of new materials regarding the manufacturing process is presented in this work. For the necessary bending process, a static equivalent to the Kitagawa-Takahashi diagram for the maximum admissible strain in the outer fiber depending on the flaw size is introduced. For cyclic loading, the endurance limit is used for dimensioning. Here, a commonly used stress based design concept using the Smith diagram and a fracture mechanics approach using the Kitagawa-Takahashi diagram are adapted for such components.
Published Version
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