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GB/T 44400-2024Dual electro-dynamic shakers simultaneous vibration testing system (English PDF)

电动振动台双台并激振动试验系统

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 23, 2024

Implementation date

March 1, 2025

Scope

GB/T 44400-2024 is the English-translated version of 电动振动台双台并激振动试验系统.

GB/T 44400-2024 is the Chinese national standard covering two identical shakers driving one specimen along a single axis at different points — the composition of the system, the requirements on each uniaxial table and on the pair, the sine and random thrust that add up across the two tables, the inspection methods, the factory and type inspection rules, and the first-order resonance frequency of the mechanical decoupling device that keeps one table's motion from feeding into the other. First edition, issued with the tri-axis system standard GB/T 44401-2024, under the China Machinery Industry Federation. In force from 1 March 2025. Issued on 23 August 2024, it has been in force since 1 March 2025.

Document preview — GB/T 44400-2024

National Standard of the People's Republic of China

ICS: 19.060
Classification: N 73

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

PrefaceIII
1 Scope1
2 Normative references1
3 Terms and Definitions1
4 System composition2
5 Technical Requirements2
5.1 Environment and working conditions2
5.2 Basic Requirements2
5.3 Uniaxial Electrodynamic Vibration Table3
5.4 Dual-station system3
5.5 First-order resonance frequency of the mechanical decoupling device3
5.6 Other requirements3
6 Inspection methods4
6.1 Test conditions4
6.2 Uniaxial Electrodynamic Vibration Table Test4
6.3 Dual-station system parameter detection4
6.4 First-order resonance frequency of the mechanical decoupling device7
7 Inspection Rules7
7.1 Factory Inspection7
7.2 Type inspection8
7.3 Decision Rules8
8 Marking, packaging, transportation and storage8
8.1 Signs8
8.2 Packaging9
8.3 Transportation and storage9
9 Random Technical Documents9

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document was proposed by the China Machinery Industry Federation.

This document is under the jurisdiction of the National Technical Committee for Standardization of Testing Machines (SAC/TC122).

This document was drafted by: Suzhou Sushi Testing Group Co., Ltd., Guangzhou University, Aerospace Science and Industry Defense Technology Research and Test Center, Beijing University of Aeronautics and Astronautics, Shenyang University of Technology, Dalian Zhiding Technology Co., Ltd., and China Machinery Testing Equipment Co., Ltd.

The main drafters of this document are: Zhang Leilei, Xu Zhonggen, Wang Gang, Yao Jinyong, Zhao Haining, Zhang Zhaoyu and Ren Xia.

Electric vibration table dual-stage parallel excitation vibration test system

1 Scope

This document specifies the technical requirements, inspection rules, marking, packaging, transportation and storage of the electric vibration table double-table parallel excitation vibration test system.

The inspection method of the double-stage parallel-excitation vibration test system of the electrodynamic shaker is described.

This document applies to the manufacture of a dual-stage parallel-excitation vibration test system for electric vibration tables (hereinafter referred to as the "dual-stage system").

The electric vibration test system consisting of multiple parallel-excited devices in the same direction shall be implemented for reference.

2 Normative references

GB/T 191

GB/T 2298

GB/T 2611-2022

GB/T 5226.1-2019

GB/T 13310-2007

JJG948-2018

3 Terms and definitions

The terms and definitions defined in GB/T 2298 and the following apply to this document.

3.1 test

Two uniaxial electric vibration tables of the same specification and model are used to perform vibrations in the same axial direction and in the same direction at different positions of the specimen.

3.2

A vibration transmission mechanism is used to eliminate or reduce the influence of the coupled motion of the dual vibrations on the test.

3.3

The superposition of the maximum sinusoidal thrusts of the two uniaxial vibration tables that make up the dual-table system.

3.4

The superposition of the maximum random thrusts of the two uniaxial vibration tables that make up the dual-table system.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 2298 · GB/T 5226.1-2019 · JJG948-2018

Editions of GB/T 44400

Edition	Title	Revision	Status
GB/T 44400-2024	Dual electro-dynamic shakers simultaneous vibration testing system	current edition	Current

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