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Effect of Form Defect in Thin-Walled Cylinder Assembly

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Abstract

Shrink-fit assemblies have been used to offer a more robust running surface for wooden wheels for a long time. Generally, the two parts are cylindrical or conical. Shrink-fit is now an operation that involves creating contact between two cylinders, there is no third party, and this is good economically. It's employed in a variety of industries, including automotive, aerospace, oil and gas, and train wheels. To do this operation, the inner cylinder's outer radius must be greater than the outer cylinder's inner radius, that difference between them is called 'interference', the latter is being important in the assembly because it contributes to increasing the resistance of the assembly. There are three ways to do this: the first by heating the outer cylinder until it expands, the second by cooling the inner cylinder until it shrinks and the third way is to realize the fitting under a press. When two cylindrical components are assembled by pushing or shrinking one onto the other, at the interface between the two matching parts, a contact pressure and friction force is formed. We study a shrink-fit assembly made up of two hollow cylinders in this paper, taking into account that the contact surfaces are not perfect but contain form defects, we try to know the effect of form defects and their role in the cohesion of the assembly using numerical simulation.

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Abbreviations

a :

The inner ring's inner radius

b :

The inner ring's nominal outer radius or the outer ring's nominal inner radius

c :

The outer ring's outer radius

bi :

The inner ring's outer radius

bo :

The outer ring's inner radius

e :

Interference

E :

Young's modulus

\({e}_{ys}\) :

Interference to produce the interior face of a hollow shaft

\({e}_{pcs}\) :

Interference that causes the hollow shaft to collapse plastically

\({e}_{yc}\) :

Interference to give the inner face of the cylinder

r :

Radial position

σr :

Radial stress

σθ :

Hoop stress

\({\sigma }_{VM}\) :

Von Mises stress

\(\varepsilon \) :

Strain

ν :

Poisson coefficient

p :

Pressure

\({A}_{s}\), \({B}_{s}\) :

Constant

\({r}_{c}\) :

Elasto-plastic radii in hollow shafts

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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by [Allal Bedlaoui], [Hamid Boutoutaou]. The first draft of the manuscript was written by [Allal Bedlaoui] and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Allal Bedlaoui.

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Bedlaoui, A., Boutoutaou, H. Effect of Form Defect in Thin-Walled Cylinder Assembly. J. Inst. Eng. India Ser. C 104, 635–646 (2023). https://doi.org/10.1007/s40032-023-00946-9

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