Dynamic Analysis and Structural Optimization for a Logging while Drilling Neutron Instrument

Chao Wei; Qiu Yue Sun; Yuan Ying Qiu; Jun Jie Ye

doi:10.4028/www.scientific.net/AMM.684.70

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 684Dynamic Analysis and Structural Optimization for a...

Dynamic Analysis and Structural Optimization for a Logging while Drilling Neutron Instrument

Abstract:

Logging while drilling (LWD) neutron instrument is a core equipment of the pulsed neutron logging technology, its anti-vibration performance has a direct impact on the measurement accuracy. For improving the anti-vibration performance, a reverse design method was proposed to avoid the resonance region due to increasing structural stiffness. The dynamic performance of the original instrument was analyzed, the weaknesses of its anti-vibration performance were determined and its topologies were improved. Moreover, the structural parameters of the instrument were optimized to raise the structural base frequency. The results show that the base frequency of the instrument increases high enough, the influence curves and surfaces of the base frequency with design variables provide a theoretical reference for the design of a LWD neutron instrument.

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Proceedings of 2014 International Conference on Mechanics and Mechanical Engineering

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Periodical:

Applied Mechanics and Materials (Volume 684)

Pages:

70-75

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.684.70

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Online since:

October 2014

Authors:

Chao Wei, Qiu Yue Sun, Yuan Ying Qiu, Jun Jie Ye*

Keywords:

Dynamic Analysis, Logging while Drilling Neutron Instrument, Structural Parameter Optimization, Topological Form Improvement

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