Underwater explosion shock wave equivalent loading experimental device

Abstract

The invention discloses an underwater explosion shock wave equivalent loading experimental device which comprises an emission system, a speed measurement system, a high pressure water tank system, a hydraulic system and a measurement system. A conventional method for directly measuring water pressure in a water tank through a piezoelectric sensor is changed, and an equivalent explosion shock wave is indirectly obtained according to reflection and transmission knowledge of elastic waves in the shock dynamics, so that the experimental device is simplified, a test method is optimized, and the measurement precision is improved. According to the device, bullets strike the high pressure water tank system, and kinetic energy of the bullets is converted into energy of the shock wave in the high pressure water tank. The underwater explosion shock wave equivalent loading experimental device can obtain far field explosion shock waves under various water depth environments under a condition of not using explosives and complete response analysis of the underwater explosion shock dynamics for various materials, and has the advantages of high measurement precision, high safety, low experimental cost, simple operation and the like.

Description

technical field [0001] The invention relates to a dimensional elastic wave and impact dynamics experimental device, in particular to an underwater explosion shock wave equivalent loading experimental device. Background technique [0002] Marine engineering structures usually work in harsh environments such as seawater corrosion, high and low temperature, and transient impact loads, and the main impact loads they bear include collisions, three-dimensional fluid loads, etc. In addition, the ship structure also faces the threat of weapon strikes, and must deal with explosive loads from the surface and underwater. At present, there are few experimental studies on the action of underwater explosion shock waves on marine structures. Instead, finite element simulation software such as ABAQUS, LS-DYNA, and AUTODYN are mainly used for simulation research. Due to the lack of necessary experimental verification, it is difficult to prove that software simulation accuracy. Therefore, i...

AI Technical Summary

Problems solved by technology

The existing experimental methods focus on pool explosion experiments and equivalent target plate experiments. Due to the shortcomings of traditional explosion experiments such as poor controllability, low efficiency, high cost, high risk factor, and high requirements for the experimental environment, an underwater explosion shock wave is designed. Equivalent loading experiment test system and accurate test method will have important engineering significance

[0003] At present, there are relatively few researches on the equivalent loading experimental devices of underwater explosions at home and abroad.

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