This paper discusses the analysis and verification of a finite element model which simulates the robustness of a high end computer server structure during a severe seismic event. The server consists of the frame which is the structure that components are installed into, such as processor units, input-output units and power components. The finite element modeling of this server frame is presented here not only to inform on creating an accurate model for simulation purposes, but also to provide guidelines as to the critical factors in setting up a large assembly finite element model (FEM) and to establish the optimum methodology for modeling this complex assembly with the available analysis software tools. For verification, the simulated modal data is compared to both modal data measured from an instrumented impact hammer, and to measured swept sine data. The simulated results compare favorably with the measured data, and it has been determined that location and integrity of the welded connections are critical for an accurate vibration response of the finite element model. The analysis frame model was subjected to loads and environmental conditions similar to those endured under horizontal table vibration tests and seismic events. The results of the experimental testing and simulations were compared and proved to be in a good correlation. Based on this verified finite element model, any additional redesign of the frame structure and its stiffening members can proceed very efficiently. This design study builds toward the objective of constructing a verified model of the server frame and components which will lead to a guideline for implementing stiffener designs on high-end server systems.
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ASME 2009 Pressure Vessels and Piping Conference
July 26–30, 2009
Prague, Czech Republic
Conference Sponsors:
- Pressure Vessels and Piping
ISBN:
978-0-7918-4371-0
PROCEEDINGS PAPER
Seismic Evaluation of Large Server Computer Structure
Budy D. Notohardjono,
Budy D. Notohardjono
IBM Corporation, Poughkeepsie, NY
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Shawn Canfield,
Shawn Canfield
IBM Corporation, Poughkeepsie, NY
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James A. Cooke
James A. Cooke
IBM Corporation, Research Triangle Park, NC
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Budy D. Notohardjono
IBM Corporation, Poughkeepsie, NY
Shawn Canfield
IBM Corporation, Poughkeepsie, NY
James A. Cooke
IBM Corporation, Research Triangle Park, NC
Paper No:
PVP2009-77791, pp. 53-58; 6 pages
Published Online:
July 9, 2010
Citation
Notohardjono, BD, Canfield, S, & Cooke, JA. "Seismic Evaluation of Large Server Computer Structure." Proceedings of the ASME 2009 Pressure Vessels and Piping Conference. Volume 8: Seismic Engineering. Prague, Czech Republic. July 26–30, 2009. pp. 53-58. ASME. https://doi.org/10.1115/PVP2009-77791
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