Thermal environment impact performance test device of composite material blade under multi-point impact excitation

Abstract

The invention provides a thermal environment impact performance test device of a composite material blade under multi-point impact excitation, comprising a power supply module, a measurement module, amulti-point impact module, a clamping module, a thermal environment module, a projectile recovery module and a platform body module, wherein the thermal environment module is disposed on the platformbody module for providing an adjustable high temperature test environment; the clamping module is disposed in the thermal environment module for clamping and fixing a blade test piece to be tested; the multi-point impact module is disposed on the platform body module for simultaneously launching a plurality of projectiles to impact the blade test piece; the power supply module is used for providing power for the multi-point impact module; the projectile recovery module is placed in the thermal environment module and is located behind the clamping module for recovering the projectiles; and themeasurement module is used for measuring a vibration size, a projectile trajectory, an impact force and noise. The device simultaneously realizes multi-point impact excitation and thermal excitation,simulates the situation that multiple points of the composite material blade are impacted at the same time, and provides more realistic and reliable experimental data for the impact test.

Description

technical field [0001] The invention belongs to the field of impact dynamics, and relates to a test device for thermal environment impact performance of composite blades under multi-point impact excitation. Background technique [0002] With the rapid progress and development of aerospace technology, the demand for high-performance aerospace materials has gradually increased. For a long time, the research on materials related to high-speed machinery such as aircraft has often focused on the static or low-speed characteristics of materials, which gradually exposed some problems. , and cause some serious consequences. For example, many aircraft bird strikes first appeared in the United States at the end of the last century. With the passage of time and the rapid development of global air traffic, such events have attracted more and more attention from relevant scholars. As a result, the theory of shock dynamics has begun to develop rapidly, and shock dynamic experiments have ...

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Problems solved by technology

[0006] In addition, the above-mentioned experimental devices are the same as most of the other existing devices, and the impact source is a single point impact, but sometimes, for example, when considering the problem of bird strikes, many kinds of birds show a group activity phenomenon of a certain array behavior, which is often There will be more than one flying bird impact phenomenon. Such problems obviously have completely different mechanical properties from single-point impacts. An experimental device that can realize simultaneous multi-point impacts should be designed to simulate such problems

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