Optimization method for fixture effectiveness verification based on vibration test coupling system

A technology of coupling system and vibration test, applied in vibration test, railway vehicle test, machine/structural component test, etc.

Active Publication Date: 2021-05-14
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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Problems solved by technology

[0004] It can be seen that the current published literature lacks research on efficient modeling methods for fixture-test piece-shaking table coupling systems and rapid validation methods for fixtures

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  • Optimization method for fixture effectiveness verification based on vibration test coupling system

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with accompanying drawing. In this way, the realization process of how the present invention uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. It should be noted that, as long as there is no conflict, the technical features mentioned in the various embodiments can be combined in any manner. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0034] Therefore, in order to solve the above-mentioned problem, the present invention provides a kind of fixture validity verification optimization method based on vibration test coupling system, the coupling system of vibration test comprises vibrating table, fixture and test piece, and vibrating table, fixture, test piece are a coupling The dynamic system of the test piece...

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Abstract

The invention relates to a fixture validity verification and optimization method based on a vibration test coupling system. The vibration test coupling system includes a shaking table, a fixture and a test piece, wherein the validity verification and optimization method comprises the following steps: spectrum data acquisition of vibration acceleration; The coupling system is decomposed, and finite element modeling and modal analysis of the fixture and test piece subsystems are carried out respectively; then the transfer functions of the fixture and test piece subsystems are determined respectively; and the transfer functions are assembled through the defined connection elements; Vibration response calculation; if the results do not meet the design requirements, carry out modal contribution analysis and optimization analysis until the vibration response calculation results meet the design requirements. Based on the measured acceleration spectrum data, the present invention can effectively and intuitively verify the effectiveness of the fixture, and has important guiding significance for the design of the fixture.

Description

technical field [0001] The invention belongs to the technical field of test equipment, and in particular relates to a method for verifying and optimizing the effectiveness of a fixture based on a vibration test coupling system. Background technique [0002] Vibration is one of the most important environmental factors leading to product failure. For products that are subject to vibration environment assessments at all times, they must undergo vibration reliability assessment experiments before leaving the factory, especially in the field of rail transit. GB / T21563-2008 (Shock and Vibration Tests for Railway Vehicle Equipment) clearly stipulates that Requirements and methods for random vibration and shock tests on equipment. It can be seen that the quality of the vibration test directly determines whether the product can withstand the expected environmental assessment and whether it can achieve its due functions within the specified number of years. [0003] In the vibration...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/08G01M7/02
CPCG01M7/02G01M17/08
Inventor 李振鹏丁杰朱宇龙王永胜臧晓斌贺建军廖俊翕
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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