کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
774060 | 1462992 | 2013 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Computational model for determination of dynamic load capacity of large three-row roller slewing bearings Computational model for determination of dynamic load capacity of large three-row roller slewing bearings](/preview/png/774060.png)
• Calculation model for dynamic load capacity of a large roller slewing bearing.
• 3D FEM-model is used for calculation of internal contact force distribution.
• Influence of support deformation and clearance on the contact force distribution.
• Influence of the roller profile on the raceway loading.
In the presented paper a calculation procedure for determination of dynamic load capacity of large three-row roller slewing bearings is presented. The calculation procedure consists of three main parts: (i) determination of internal contact force distribution in a large three-row roller slewing bearing with consideration of bearing clearances and ring support deformations, (ii) determination of stress field in the contact area between raceway and rollers as a consequence of contact forces and (iii) determination of the bearing’s fatigue life due to contact fatigue of the raceway. The internal contact force distribution is determined numerically by using a symmetry 3D FEM-model of a large three-row roller slewing bearing. Another numerical procedure is used to determine the stress field in the contact area between rollers and raceway. This problem is studied on different roller types: cylindrical roller (without profile correction), fully crowned roller (logarithmic-profile) and partially crowned roller (ZB-profile). Numerically determined contact stresses then serve as a basis for fatigue analyses, where the bearing’s service life of the bearing is determined by using the stress-life approach, considering typical material parameters of the bearing’s raceway.
Journal: Engineering Failure Analysis - Volume 32, September 2013, Pages 44–53