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Abstract：
In this paper, an electro-hydraulic servo resonance technology is proposed to meet the loading requirements of a high-frequency sound fatigue test for large tonnage. First of all, we analyze the static and dynamic loading structure of electro-hydraulic servo vibration and establish the vibration equation of the system. Additionally, the modal and vibration characteristics of the system are analyzed by simulation, which verified the feasibility of the proposed electro-hydraulic servo resonant loading technology. Finally, the influence of various factors such as sample stiffness, lead screw stiffness, class II spring stiffness, class II weight mass, lower beam mass, and upper beam mass on the natural frequency and amplification coefficient of the system is analyzed. In this paper, a new technology is proposed to provide theoretical support for the research and development of large-tonnage high-frequency noise fatigue testing equipment.
摘要：
在本文中,提出了一种电液伺服共振技术，以满足大吨位高频声疲劳试验的加载要求。首先,分析了电液伺服振动的静态和动态加载结构，建立了系统的振动方程。此外,通过仿真分析了系统的模态和振动特性,验证了所提出的电液伺服谐振加载技术的可行性。最后,样品刚度等各种因素的影响，丝杠刚度,二级弹簧刚度,II类重量,下梁质量,并对系统的固有频率和放大系数进行了分析。在本文中,为大吨位高频噪声疲劳测试设备的研发提供理论支持。
