A dynamic thermal-mechanical model of the spindle-bearing system

Wang, Haitong; Cai, Yonglin; Wang, Heng

doi:10.5194/ms-8-277-2017

Cited by 8 publications

(2 citation statements)

References 22 publications

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“…Isert Sarah [9] used Matlab software to create a basic code which provides a firstorder approximation of the heat transfer capabilities of a bearing at low Reynolds numbers. Wang et al [10] investigated the thermal feedbacks of a spindle-bearing system with measurable and adjustable bearing preload and their influence on shaft stiffness.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical transient thermal analysis of the idler bearing housing made of steel or polymer material

2022

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The research of the influence of housing material on operation temperature of the idler bearing assembly is presented in this paper. Several radial loads and rotary speeds were applied to the test bench to determine the transient temperature field. The results were monitored and recorded for the whole period until the temperature of the assembly reached stationary stage. FEM model was created where the rolling elements were replaced with the especially designed artificial body, having the shape of irregular ring. It generates heat and connects only those points of the inner and outer ring which are in operating conditions connected with the rolling elements. The experimental results are compared with FEM results. The conclusion is given on suitability of polymer material for this purpose.

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Section: Introductionmentioning

confidence: 99%

Experimental and numerical transient thermal analysis of the idler bearing housing made of steel or polymer material

2022

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“…The predicted bearing properties are used to estimate the changes in the dynamic behavior of spindles. Wang at all [15] present a dynamic thermalmechanical model to investigate the thermal characteristics in a spindle-bearing system. In this model, transient thermal analysis, static structure analysis and calculation of the boundary conditions are conducted as a solution loop.…”

Section: Introductionmentioning

confidence: 99%

Influence of Heat Generated in a Rolling Bearing on Its Motion Resistance

Kosmol¹

2022

IJMMT

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The heat generated in a bearing may affect its resistance to motion. Therefore, the bearing seat designer should take this into account in the design process. The article presents the results of simulation tests which show how the heat in the bearing affects its resistance to motion. A methodology for determining the resistance to motion and power losses in the bearing has been proposed, which consists of two stages: identification of the temperature distribution in the bearing and identification of thermal deformation and contact loads. The main results of the research are the following statements: that the thermal deformation of the bearing elements is much greater than that due to mechanical loads (centrifugal forces or pre-load) and the contact loads, thus the motion resistance and power losses in the transient state may be much greater than in the state fixed. The conducted experimental studies show a relatively good qualitative agreement with the results of simulation tests, while the quantitative results do not always provide a sufficient agreement. The most important conclusion from the research is as follows: for high-speed assemblies, e.g. spindles of High Speed Cutting machine tools, the failure to take into account the motion resistance due to heat generated in the bearing may lead to a reduction in bearing life.

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