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Vibration test device

A technology for vibration testing and DUT, applied in vibration testing, measuring devices, testing of machine/structural components, etc., can solve the problems of high cost of the vibration table, difficult to meet the requirements of the excitation frequency and thrust of the vibration table, etc.

Active Publication Date: 2021-06-04
AECC HUNAN AVIATION POWERPLANT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, usually the natural frequency of the blade is high, and the excitation frequency and thrust of ordinary vibration tables are difficult to meet the requirements. It is necessary to provide a vibration table with higher excitation frequency and greater thrust, but the cost of this type of vibration table is relatively high

Method used

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  • Vibration test device

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Embodiment Construction

[0029] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0030] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification only for convenience, for example, according to the description in the accompanying drawings directions for the example described above. It will be appreciated that if the illustrated device is turned over so...

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Abstract

The present disclosure relates to a vibration testing device. The vibration testing device includes: a mounting seat, the mounting seat is used for installing the tested part, and the mounting seat includes: a base, the base can be fixed on the vibration table; a cantilever plate, one end of the cantilever plate and the base The other end can be connected with the object under test, and the cantilever plate can move along a preset direction relative to the base and be positioned at multiple positions. In the vibration test device provided by the present disclosure, the tested part and the mounting base can generate coupled vibration, and the coupling frequency of the tested part and the mounting base is lower than the natural frequency of a single tested part, which reduces the requirement for the excitation frequency of the vibration table .

Description

technical field [0001] The present disclosure relates to the technical field of vibration testing, in particular, to a vibration testing device. Background technique [0002] The aero-engine is regarded as the "heart" of a fighter plane, and the engine blade is the part with the worst working environment and the most complex structure of the aero-engine, and it is also the main failure-prone part of the engine. The reliability of aeroengine blades restricts the requirements of high thrust-to-weight ratio, high applicability, high reliability, durability and low cost of modern high-performance aeroengines. [0003] The vibration fatigue strength assessment test of the engine blade is an indispensable and important link in the development and production of the engine. The results of the assessment test are very important for the engine's working safety, fault analysis and troubleshooting. The blade vibration fatigue test is an effective means to test the fatigue strength of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/02
CPCG01M7/02G01M7/027
Inventor 李平君武昌耀张勇李坚
Owner AECC HUNAN AVIATION POWERPLANT RES INST