Simple high-g (gravity) acceleration shock testing machine

Abstract

The invention discloses a simple high-g (gravity) acceleration shock testing machine, which comprises a base, stand columns, an upper seat, a response header assembly, a clamp control assembly and a punch rod assembly, wherein a sensor to be tested is arranged on the upper end face of a response header of the response header assembly, a circuit is well connected, a response header catch is used for blocking the outer edge of the upper end face of the response header, a response header catch screw is tightened so as to ensure that the sensor arranged on the response header and a punch rod havethe same initial speed when the punch rod in the punch rod assembly drops down vertically, the punch rod is lifted to a certain height with hands, clamping rods in the clamp control assembly is tightly clamped and a control handle is lifted to make clamping rod blocking slots clamp the clamping rods, the height of the lifted punch rod is recorded, an acquisition system parameter is set well, and the punch rod collides the base at certain initial speed vertically at high speed and rebounds so as to generate a high-g acceleration shock signal. The testing machine disclosed by the invention is simple in structure, small is space size, very low in processing and manufacturing cost and simple and convenient in operation.

Description

technical field [0001] The invention relates to the technical field of impact testing and experiments, in particular to a simple high-g acceleration impact test bench. technical background [0002] Calibration of high g (acceleration of gravity, 9.8m / s2) value acceleration sensor is an essential and important link in the development process of this type of sensor, and it is difficult to simulate the high g value shock environment. There are three kinds of high-g value acceleration sensor calibration equipment commonly used at present. The first is the Hopkinson compression rod calibration system, which uses a compressed air cannon to shoot a high-speed projectile to collide with a slender rod, which can generate an acceleration stress wave signal of more than 100,000g in the rod. At the same time, adding a laser Doppler test device can realize the absolute calibration of the acceleration sensor. But the whole device structure is huge and complex, and the cost is very expen...

AI Technical Summary

Problems solved by technology

However, there is no public report on the vertical drop impact test bench that can produce higher impact acceleration.

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