Study on the Distributed and Non-Stationary Dynamic Load Being Transformed into Several Equivalent Centralized Loads for Aerocraft

Abstract:

Missiles always undergo non-stationary and continuously distributed load. However, only some centralized loads can be adopted in the ground for their vibration experiments. In this paper, the theoretical analysis and numerical simulation computations programs are established for the distributed and non-stationary airdynamic load being translated into several equivalent centralized loads for high-speed missile. The researches showed that, under the equivalent rule of structural modal responses, the average responses error in both domains time and frequency is within 1.5dB, so it is possible to provide a feasible method for the vibration test on the ground for missile structures.

• Periodical: Applied Mechanics and Materials (Volumes 105-107)
• Pages: 965-968
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.105-107.965
• Online since: September 2011
• Authors: Xiao Tong Chang, Yun Ju Yan
• Keywords: Centralized Loads, Distributed, Equivalent Transform, Non-Stationary Load

References

[1] M. Wiklo, J. Holnicki-Szulc: Key Engineering Materials. Vols. 293-294. (2005), pp.159-166.

DOI: 10.4028/www.scientific.net/kem.293-294.159

[2] SS. Law, J.Q. Bu, X.Q. Zhu: Engineering Structures. Vol. 27 (2005) No.10, p.1586

[3] E.G. Yanyutin, I.V. Yanchevsky: International Journal of Solids and Structures. Vol. 41 (2004) No.13, p.3643

[4] H.G. Georgiadis, G. Lykotrafitis: Journal of Elasticity. Vol. 65 (2002) No.1-3, p.87