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为提高电动振动台冲击响应谱试验的试验量级,应用有限元理论建立了电动振动台及附加的谐振装置的动力学模型,在此基础上开展冲击响应谱试验的仿真研究。通过研究振动台动态特性建立了冲击响应谱试验仿真方法,进一步研究了应用谐振装置在振动台上实现高量级冲击响应谱试验的可行性。研究结果表明:使用谐振装置可显著地提高电动振动台实现冲击响应谱试验的能力。
In order to improve the test magnitude of the shock response spectrum test of the electric shaker, the dynamic model of the electric shaker and the additional resonance device is established by using the finite element theory. Based on this, the simulation study of the impact response spectrum test is carried out. The impact response spectroscopy simulation method is established by studying the dynamic characteristics of vibrating table, and the feasibility of using the resonating device to achieve high-magnitude shock response spectroscopy on vibrating table is further studied. The results show that the use of resonant devices can significantly improve the ability of the electric shaker to achieve impact response spectroscopy tests.