Abstract

In this study, in-plane natural frequencies and the dynamic stability of a curved beam subjected to a uniformly distributed periodic axial load with suspended spring–mass systems are investigated by using the FEM. The natural frequency results obtained from the developed FE code are compared with the ANSYS model results to verify the accuracy of the present model. The effect of the stiffness coefficients, the position of the spring–mass system, static and dynamic load parameters on the natural frequencies and the dynamic instability regions are investigated for a various subtended angle. The results are presented by tables and graphics.

中文翻译：

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悬吊弹簧质量系统曲梁振动及动力稳定性分析

摘要

在这项研究中，使用有限元法研究了具有悬挂弹簧质量系统的曲线梁在均匀分布的周期性轴向载荷下的平面内固有频率和动态稳定性。将开发的有限元代码获得的固有频率结果与 ANSYS 模型结果进行比较，以验证当前模型的准确性。研究了刚度系数、弹簧质量系统的位置、静态和动态载荷参数对固有频率和动态不稳定区域的影响，研究了不同的对角。结果以表格和图形的形式呈现。