Manufacturing Residual Stress States in Heat Treatment Simulation of Bearing Rings

✍ Scribed by H. Surm; O. Kessler; F. Hoffmann; H.-W. Zoch

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 208 KB
• Volume: 37
• Category: Article
• ISSN: 0933-5137
• DOI: 10.1002/mawe.200500973

✦ Synopsis

Residual stresses generated in the different steps of a manufacturing chain are attached great importance to the distortion due to heat treatment. Because the measurement of residual stress states is associated with large experimental work, the use of simulation would be qualified for the examination of the influence of manufacturing residual stresses on distortion. Due to this reason, a simple method for generating realistic residual stress states by the use of artificial thermal strain in a pre-simulation step is presented. By changing the thermal strain distributions a wide range of residual stress distributions in a component can be generated. A typical residual stress distribution after machining was generated in a bearing ring. The calculated residual stress profile was in good agreement compared to XRD-measurement. In a second simulation step the local development of stress relieving during heating was observed. Stress relieving can be attributed to local plastic deformation and rearrangement of stresses.