Self-excited impact-vibration composite test clamp and feeding device thereof

Abstract

The invention discloses a self-excited impact-vibration composite test clamp and a feeding device thereof. The self-excited impact-vibration composite test clamp can achieve self-excited vibration loading on a piece to be tested by the design of a modular resonant component, and can simulate an impact-vibration composite mechanical environment in cooperation with an impact device. By adjusting thenumber of cantilever springs in the resonant component and the position of a sliding support, multiple groups of vibration loading of different frequencies can be realized. Based on the design of a hydraulic system and a pin roller linear guide rail, the rapid feeding of the entire test clamp can be achieved and the stable reliability of a whole apparatus can be guaranteed in a complex mechanicalenvironment. The self-excited impact-vibration composite test clamp overcomes the insufficient amplitude of a conventional electromagnetic vibration loading mode, can realize high-overload and multi-frequency vibration loading, and provides an effective means for the impact-vibration composite mechanical environment test.

Description

technical field [0001] The invention relates to the field of shock-vibration composite environmental tests, in particular to a self-excited shock-vibration composite test fixture and a feeding device thereof. Background technique [0002] In recent years, impact test equipment has been developed maturely. For example, Hopkinson rods, Marshall weights, etc. have been commonly used, but such devices have great limitations, and are often only used to generate a single impact, and cannot be loaded for vibration tests. And because the impact caused by the combined shock-vibration environment is not a simple linear addition, in the combined environment, the performance attributes of all aspects of the structure will have different linear changes than those under a single load. Test pieces tend to be more impacted, have higher wear, deform faster, and damage the product faster. All the recent composite environmental test devices are only a simple combination of vibration and impa...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a self-excited shock-vibration compound test fixture and its feeding device, which solves the problem that the traditional test device can only simulate a single shock or vibration dynamic environment, and overcomes the traditional electromagnetic vibration mode amplitude at the same time. problem with limited value

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