Research on the Natural Frequencies of a Large-caliber Howitzer Barrel Based on Radial Point Interpolation Method

doi:10.3969/j.issn.1000-1093.2017.12.004

Abstract

Abstract: Considering the influence of muzzle brake and breech ring, an elastic dynamics equation of the barrel is established. Combining the advantages of the finite element method and the meshless method, an element supported domain radial point interpolation method is proposed based on the radial basis point interpolation method, in which the element supported domain is treated as the interpolation domain of the integration point to establish the discrete elastic dynamics equation. The natural frequencies of barrel are estimated by solving the dynamic equation. Finally, the effectiveness of the proposed method is demonstrated by numerical examples and experiments, and the results show that the proposed method can provide more accurate results with the same element number，which can coincide with the experimental results. Key

Key words: ordnancescienceandtechnology, barrel, naturalfrequency, elementsupporteddomainradialpointinterpolationmethod

CLC Number:

TJ302

ZHANG Hong-jun， QIAN Lin-fang， CHEN Guang-song， XU Bin. Research on the Natural Frequencies of a Large-caliber Howitzer Barrel Based on Radial Point Interpolation Method[J]. Acta Armamentarii, 2017, 38(12): 2321-2327.

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第38卷第12期
2017 年12月兵工学报ACTA
ARMAMENTARIIVol.38No.12Dec.2017

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