Finite-element analysis is the only means to determine the load distribution of large slewing bearings considering flexible bearing rings and supporting structures. For reliable results, the plausibility of the models need to be validated. Previous attempts on validating a finite-element model of a slewing bearing against measurement results have indicated a huge dependence of the deformation on tolerances in the supporting structures. This dependence has not yet been explored in research in favor of a focus on tolerances of the bearing itself. The present work explores different irregularities of the flange that connects to the outer ring of the bearing and their effects on bearing deformation. The results show that single dents or bulges on the flange and inclined flanges of the adapter ring significantly change the load distribution and contact angles of the bearing. They also aggravate the risk of truncation. For the calculated fatigue life however, the bearings seem to be robust to these uncertainties for the shown load cases. The dimensions of the investigated tolerances are verified by comparing the resulting deformations of the bearing outer ring against experimental data.

中文翻译：

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支撑结构异常对有限元叶片轴承模型验证的影响


有限元分析是确定考虑柔性轴承套圈和支撑结构的大型回转支承载荷分布的唯一方法。为了获得可靠的结果，需要验证模型的合理性。以前尝试根据测量结果验证回转支承的有限元模型表明，变形对支撑结构公差的巨大依赖性。这种依赖性尚未在研究中得到探索，以支持关注轴承本身的公差。本研究探讨了连接到轴承外圈的挡边的不同不规则性及其对轴承变形的影响。结果表明，转定环的挡边和倾斜挡边上的单个凹痕或凸起会显著改变轴承的载荷分布和接触角。它们还会加剧截断的风险。然而，对于计算出的疲劳寿命，对于所示的载荷工况，轴承似乎对这些不确定性具有鲁棒性。通过将轴承外圈的变形与实验数据进行比较，验证所研究公差的尺寸。