Tester for imitating underwater impact on sheet

Abstract

The invention provides a tester for imitating underwater impact on a sheet. The device comprises a water storage tank, PVC (polyvinyl chloride) tubes, a water pump, a water channel, butterfly valves, a target flowmeter, a rotating shaft, a bearing, the sheet, a strain gauge, a dynamic strain meter, an intelligent signal acquisition and processing analyzer, a catch lever, an angular displacement sensor, a holding-type elastic coupler, an angular displacement sensor data acquisition board and a motor matched with the water pump, wherein the water storage tank is arranged on the ground, an opening at bottom of the side surface of the water storage tank is connected with one end of one PVC tube, and the other end of the PVC tube is connected with the water inlet of the water pump; one butterfly valve is arranged at a connection part between the water storage tank and one PVC tube; the target flowmeter is arranged on the other PVC tube between the water inlet of the water channel and the other butterfly valve; the rotating shaft is vertically arranged at the part, close to the water inlet, of the interior of the water channel, and the dynamic strain meter and the intelligent signal acquisition and processing analyzer are connected by virtue of a lead educed from the sheet and the strain gauge on the target flowmeter so as to acquire data of strain change time; and a lead educed from the angular displacement sensor is connected with the angular displacement sensor data acquisition board to acquire data of rotating shaft angle change time.

Description

(1) Technical field [0001] The invention relates to a test device for simulating the underwater impact of a thin plate, in particular to a test device for simulating the impact of a thin plate under water by using a water pump as a power source. It has a simple structure and is easy to build. It can replace complex and expensive underwater test equipment to simulate the rotation process of the thin plate under the impact of high-speed water flow in the tank and the fluid-solid coupling phenomenon between the thin plate and the fluid during the rotation process. The relationship between the dynamic response and the driving parameters. Through the test data, it is possible to deeply explore issues such as the fluid-solid coupling mechanism and scale rate, which belongs to the technical fields of marine ship engineering and weapon industry engineering. (2) Background technology [0002] The thin plate rotates around the axis under the impact of high-speed water flow, which wil...

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Problems solved by technology

The size of the equipment is large, the power is high, the energy consumption and the test cost are all very large; if the test device is made according to 1:1...

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