Technical Brief

A Novel Method to Compute the Elastic Approach of a Hollow Roller

[+] Author and Article Information
Yankui Liu

School of Mechanical Engineering,
Dalian Jiaotong University,
Dalian 116028, China
e-mail: liu_yankui@163.com

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received October 3, 2017; final manuscript received November 12, 2017; published online February 9, 2018. Assoc. Editor: Sinan Muftu.

J. Tribol 140(4), 044501 (Feb 09, 2018) (4 pages) Paper No: TRIB-17-1377; doi: 10.1115/1.4038952 History: Received October 03, 2017; Revised November 12, 2017

The elastic approach of a w roller compressed by two flat plates is a basic building block in roller bearing design. According to the theory of contact mechanics, a finite element (FE) model was established in this paper to study the contact problem of a hollow roller. Research results show that deformation of the hollow roller due to contact has a strong relationship with roller's hollowness ratio. A new equation for calculating the contact deformation of a hollow roller is proposed. In addition, it is found that the accuracy of existing calculation method for bending deformation is also worth studying, and a new equation for calculating bending deformation of a hollow roller is established by data fitting. The experimental results are also presented to support the results of this work.

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Fig. 1

Solid and hollow rollers under compression

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Fig. 2

FE mesh model: (a) solid roller and (b) hollow roller

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Fig. 3

Curves of hollow roller's contact deformation with load

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Fig. 4

Comparison of Eq. (3) and FE analysis results

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Fig. 5

Curves of hollow roller's bending deformation with load

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Fig. 6

Comparison of Eq. (4) and FE analysis results

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Fig. 7

Test and equation results of hollow rollers



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