Impact response spectrum testing device and testing method based on elastic stress wave loading

Abstract

The invention relates to an impact response spectrum testing device and a testing method based on elastic stress wave loading. An elastic stress wave loading device is combined with a waveform shaper,an excitation waveform capable of accurately adjusting is formed, and a defect of a current testing device that the excitation waveform is not easy to adjust is avoided. At the same time, while an impact rod collides with an incident rod, a generated elastic stress is large in amplitude value, and short in impact duration time, a high-frequency component of a resonance device can be excited, andnear-medium field explosion signal simulation is performed. In addition, because a balancing weight can be randomly installed at any positions of a resonance plate, inherent characters of the resonance plate can be adjusted. A speed of the impact rod is changed through adjusting a pressure of an air cylinder, so the amplitude value of an elastic wave is adjusted; pulse duration time is changed through adjusting a shape of the impact rod; thereby a shape of the elastic wave is changed through adjusting a shape of a waveform generator; and frequency of a resonance response plate is adjusted through changing an installing position of the balancing weight, finally different impact response spectral lines can be generated, and impact response spectrum tests of various indexes are conveniently performed.

Description

technical field [0001] The invention belongs to the technical field of environmental testing, and relates to a novel equipment for shock response spectrum testing, in particular to a shock response spectrum testing device and testing method using elastic stress wave loading. Background technique [0002] There are a variety of pyrotechnic devices on precision instruments, and these pyrotechnic devices can produce high-frequency, high-level explosive impact environments. Harsh explosion impact environment seriously threatens the safety of sensitive devices and may cause irreparable damage, which is one of the main factors that endanger the safe use of precision instruments. Effectively simulating the explosive impact environment, and conducting ground test assessments on precision instruments and sensitive components are essential stages before equipment is put into use. Due to the uncertainty of the explosion shock environment and the randomness of the shock waveform, it is...

AI Technical Summary

Problems solved by technology

[0009] The technical problem solved by the present invention is: aiming at the deficiencies of the existing shock response spectrum test methods, the prese

Images