Anti-Shock Optimization of a Certain Gas Turbine Foundation by DDAM

Abstract:

The Dynamic Design Analysis Method (DDAM) calculation principles and procedures are addressed for a system with two degrees of freedom (DOF). The basis of the U.S. Navy DDAM design input spectrum is introduced. Shock response analysis by DDAM for a certain gas turbine foundation is conducted, followed by the displacement and stress response of key parts, such as the flexible supporter. Furthermore, weak positions of the foundation in shock environment are found. The shock isolation ability of metal-rubber originally used as the vibration isolator is also verified by comparison. Finally, design guidelines for the anti-shock optimization of the foundation are given.

• Periodical: Advanced Materials Research (Volumes 129-131)
• Pages: 376-380
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.129-131.376
• Online since: August 2010
• Authors: Zui Wei Xie, Shao Hua He, Xin Yue Wu
• Keywords: DDAM, Gas Turbine Foundation, Metal-Rubber Vibration Isolator

References

[1] Wang Yu, Hua Hongxing. Modern Shock Theory and Application for Ships[M]. Beijing: Science Press, (2005).

[2] Liu Jianhu. Non-contact Underwater Explosion Dynamics Theory and Application for Ships[D]. Wuxi: China Ship Science Research Center, (2002).

[3] Shock Design Criteria for Surface Ships, Naval Sea Systems Command, NAVSEA 0908-LP-000-3010 Revision 1, September (1995).

[4] M. MHurwitz, A revision of the Dynamic Design Analysis Method (DDAM) in NASTRAN, Naval Sea Systems Command, December (1982).

[5] Scavuzzo & Pusey, Naval Shock Analysis and Design, Shock and Vibration Information and Analysis Center (SAVIAC), 2000. Fig. 5 Static-displacement urve of metal-rubber.