METHODOLOGY OF A COMPUTER AIDED DESIGN OF SHRINK FIT TAKING INTO ACCOUNT ROUGHNESS AND FORM DEFECTS OF MANUFACTURING PROCESS

The assembly technique of interference fit (shrink fit) is increasingly used today. However, the design methodologies for these assemblies use older models based on very restrictive assumptions about the shape and the surface quality of assembled parts. FEM software are now often used to overcome th...

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Bibliographic Details
Published in:Journal of mechanical science and technology 2015-05, Vol.29 (5), p.1-7
Main Authors: Boutoutaou, Hamid, Fontaine, Jean François
Format: Article
Language:English
Subjects:
Engineering Sciences
Mechanical engineering
Mechanics
Online Access:Get full text
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Summary:The assembly technique of interference fit (shrink fit) is increasingly used today. However, the design methodologies for these assemblies use older models based on very restrictive assumptions about the shape and the surface quality of assembled parts. FEM software are now often used to overcome these drawbacks. They allow an approach closer to the physical reality of the parts (complex form). However, the surfaces are generally considered to be perfect cylinders and the tightening, constant. The proposed approach makes it possible to introduce, in the design, both form defects and roughness, thus taking into account the manufacturing process. For this, form defect is integrated directly in the mesh while roughness is taken into account by an homogenized finite element of interface. An example of an application to determine specifications which take the manufacturing process (honing, grinding, turning, etc.) into account is presented. This simple method can be easily applied in industrial design offices.
ISSN:1738-494X
1976-3824
DOI:10.1007/s12206-013-0913-y