Multi-band measuring method and device for actual ship underwater explosion strong impact environment

Abstract

The invention discloses a multi-band measuring method for an actual ship underwater explosion strong impact environment. High bands over 20Hz are measured by an acceleration transducer additionally provided with a filter, and a shock spectrum base curve is obtained; medium bands between 5Hz and 20Hz are measured by an electrometric reed instrument; low bands below 5Hz are measured by a low-frequency vibrator; and obtained correction value points of the medium bands and the low bands are used for correcting the shock spectrum base curve, so that a shock spectrum correction curve is obtained finally. The method can be used for actual ship explosion test measurement of surface vessels and submarines, and also can be applied to underwater explosion test impact environment measurement of laboratory models; and moreover, by the correction method, impact environment data and safety and damage radiuses of vessel systems, equipment and personnel can be accurately and reliably obtained, and reliable test bases can be provided for formulating, supplementing and modifying shock resistance design of the vessels and for examining and testing relevant military standards.

Description

technical field [0001] The invention relates to the technical field of ship measurement, in particular to a frequency-division-band measurement method and device for a real ship underwater explosion strong impact environment. Background technique [0002] The impact environment of ship equipment is the most important measurement content of underwater non-contact actual ship explosion test. It refers to the mechanical environment of ship systems and equipment under the condition of underwater explosion shock, and is the key to the impact resistance design of ship systems and equipment. The shock input is also the main technical index of ship equipment shock resistance, which is usually described by the shock spectrum. my country is very short of accurate shock environment data measured by real ship underwater explosion tests. Therefore, the reliability and completeness of the shock environment measurement data is the most important goal of the entire test. [0003] The impac...

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Problems solved by technology

[0006] In view of the above-mentioned existing real ship underwater explosion test, the shock spectrum measured has a large error especially in the middle and low frequency bands, and provides a frequency-divided measurement method and device for the strong impact environment of the real ship underwater explosion, so that it is reliable accurate measurements to obtain accurate shock spectra

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