Proposed llfe prediction model for an automotive wheel

• Main Author: McGrath, PJ
• Format: Others
• Language: en
• Published: Research and Development Journal 2004
• Subjects: Prediction model; Residual stress
• Online Access: http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001743

Summary Historicully, stress analysis used for component design assames "ideal" materials, i.e. with isotropic, homogeneous and uniform metallurgical properties. We know that this is untrue, no matter how good the design. As design cannot provide fo, defect-free materials or components, ok appropriute defect tolerance should be the aim of the designer. Hence the concept of fuil-safe components has been introduced fo, safety-critical purts. Automotive wheels, howeveF, ure not considered fail-safe and fatigue lW prediction techniques fo, these components need to be improved in an endeavour to provide light-weight, attractive, but still safe und durable wheels. This applied approuch, where the proposed lW prediction model employs relutionships given by Gerber und a proposed lW prediction model derived from combining aspects of lW prediction models according to Collins und Juvinall & Marshek. The results show good coruelation with that of uctual wheel fatigue data.