Hide Table of Contents

Shrink Fitting

Shrink fitting is encountered in many engineering designs. It refers to fitting an object into a slightly smaller cavity. Due to normal forces that develop at the interface, the inner object shrinks while the outer object expands. The amount of shrinkage or expansion is determined by the material properties as well as the geometry of the components.

NOTES:

  • For accurate results, the overlap should be large enough to overcome approximations introduced by meshing. For example, the interference of cylindrical or spherical faces should be larger than 0.1% of the larger diameter at the interface for accurate results. However, for static studies, use the Large displacement option for moderately large interference. Use nonlinear studies for large interference problems.

  • The contacting faces need not be cylindrical.

Shrink fitting is applied as a local contact condition. You can define a shrink fit contact condition using the Shrink Fit option in the Contact Set PropertyManager.

The following figure illustrates a shrink fit contact condition between two rings. The outer diameter of the inner ring is slightly larger than the inner diameter of the outer ring. The contact condition is defined between the outer face of the inner ring (1) and the inner face of the outer ring (2).

To apply shrink fit contact:

  1. In the Simulation study tree, right-click Connections and select Contact Set.

Selecting Improve accuracy for contacting surfaces with incompatible mesh (slower) for static studies of assembly models with incompatible mesh is recommended.

  1. In the PropertyManager, under Type, select Shrink Fit.

  2. In the graphics area, select the Set 1 contact entities. All entities should belong to the same component.

Selected entities appear in the Faces, Edges, Vertices for Set 1 box .

  1. Select the Set 2 contact faces. All faces should belong to one component that is different from the component used in step 3.

Selected faces appear in the Faces for Set 2 box .

  1. Click .

  2. Mesh the model and run the study.

The above illustration is provided as a lesson in the Online Tutorial.

Related Topics

Contact Set

Multiple Contact Conditions



Provide feedback on this topic

SOLIDWORKS welcomes your feedback concerning the presentation, accuracy, and thoroughness of the documentation. Use the form below to send your comments and suggestions about this topic directly to our documentation team. The documentation team cannot answer technical support questions. Click here for information about technical support.

* Required

 
*Email:  
Subject:   Feedback on Help Topics
Page:   Shrink Fitting
*Comment:  
*   I acknowledge I have read and I hereby accept the privacy policy under which my Personal Data will be used by Dassault Systèmes

Print Topic

Select the scope of content to print:



x

We have detected you are using a browser version older than Internet Explorer 7. For optimized display, we suggest upgrading your browser to Internet Explorer 7 or newer.

 Never show this message again
x

Web Help Content Version: SOLIDWORKS 2011 SP05

To disable Web help from within SOLIDWORKS and use local help instead, click Help > Use SOLIDWORKS Web Help.

To report problems encountered with the Web help interface and search, contact your local support representative. To provide feedback on individual help topics, use the “Feedback on this topic” link on the individual topic page.