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Design optimization of the shaft rubber covers

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Design optimization of the shaft rubber covers

Initial data

As initial data 3D CAD models of rubber covers design were provided by the Customer. Models are shown in Figures 2 and 3. Scheme of maximum allowable displacement in work conditions was also provided (Figure 4).

Introduction

This research project was commissioned by one of the manufacturers of automotive components for the automotive industry.
The aim of the project was engineering justification and analysis of one of two rubber cover models proposed by suppliers that protected the movable joint and shaft support. Rubber cover is shown in Figure 1.
To solve this problem, a comparative analysis of the nonlinear strength of the material of rubber covers under specified operating conditions was used.

Figure 1. Rubber cover on movable joint

FEA model

Two calculation finite element models (FEM) were prepared acording to initial conditions. FEM representation can be seen in Figures 5 and 6.

Mooney-Rivlin calculation model was used for high nonlinear analysis.

Results overview are shown in Figures 7 and 8. Animation strain results are shown in Figures 9 and 10.

 

Figure 2. Rubber cover (design #1)

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Figure 3. Rubber cover (design #2)

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Figure 4. Scheme of displacements in working conditions

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Figure 5. FEA model of the rubber cover (design #1)

Figure 6. FEA model of the rubber cover (design #2)

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Figure 7. Von Mises strain distribution results in the rubber cover (design #1)

Figure 8. Von Mises strain distribution results in the rubber cover (design #2)

Figure 9. Animation of strain distribution results in the rubber cover (design #1)

Figure 10. Animation of strain distribution results in the rubber cover (design #2)

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