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在传统的细长体结构的振动试验中,通常采用单一振动台,通过扩展台面连接、多点平均控制的方式开展试验,可能造成结构不同部位的过试验或欠试验;而采用多个振动台协同开展振动试验可以模拟细长体结构的多点载荷激励,可提高试验模拟的置信度。文章通过某典型细长体结构,分析了传统单点激励振动试验的问题,对该结构两点激励振动试验方案、夹具、控制等的设计情况进行了介绍,并给出了实际试验结果。研究结果可为开展类似细长体结构的两点激励振动试验提供参考。
In the traditional slender body structure vibration test, a single shaking table is usually used to carry out experiments by expanding the mesa connection and multi-point average control, which may result in over-testing or under-testing of different parts of the structure. A plurality of shaking table Simultaneous vibration test can simulate the multi-point load excitation of the slender body structure, which can improve the confidence of the experimental simulation. In this paper, the problem of traditional single point excitation vibration test is analyzed through a typical slender body structure. The design of two-point excitation vibration test program, fixture and control of the structure is introduced and the actual test results are given. The results can provide reference for the two-point excitation vibration test of similar slender body structure.