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Method to Improve Server Rack Stiffness

IP.com Disclosure Number: IPCOM000244090D
Publication Date: 2015-Nov-09
Document File: 4 page(s) / 209K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method to improve server rack stiffness and rigidity by adding a support that is as much as the width of the frame at the end corner of the frame.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

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Method to Improve Server Rack Stiffness

One of the requirements of the seismic certification is the maximum deflection at the top of the frame. One requirement is that the maximum deflection of the racks within the telecommunication industry is not more than three inches when the rack is subjected to a specific seismic test profile.

The novel structure reduces the deflection of the top of the frame by 14%. The method is to add a support that is as much as the width of the frame at the end corner of the frame. This approach adds stiffness and rigidity.

Figure 1: Proposed structure (a)

Figure 2: Proposed structure (b)

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The finite element analysis shows that the addition of feet reduces the top deflection by 14% and increases the stiffness in the direction of side-to-side by a square of 1.14 = 30%.

Figure 3: Setup

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Figure 4: Test results

The side-to-side direction is the direction that has the highest deflection under vibration. To reduce the deflection, the stiffness in the side-to-side direction is improved by adding the bracket such as shown here. In some cases, there is a limitation on what bracket can be added. The novel approach adds to the bracket to further reduce the deflection.

Figure 5: Example embodiment

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