基于ABAQUS的轨道振动特性有限元仿真分析

Finite Element Simulation Analysis of Track Vibration Characteristics Based on ABAQUS

摘要:

以某水池轨道系统为研究对象,考虑支座对轨道固有频率的影响,采用三维变形体单元、三维变形壳单元、三维变形梁单元分别建立轨道有限元模型。基于特征值法,计算轨道系统一阶固有频率,对比评估轨道的振动特性,找出规律,指出不同方法的特点及工程中针对不同方法的取舍,总结可指导设计性的结论。旨在为以后设计中有关轨道振动特性计算及相似平台设计提供参考指导。

关键词:特征值法;一阶固有频率;整体振动;局部振动;轨道

Abstract:

Taking a pool track system as the research object, considering the influence of the bearing on the natural frequen-cy of the track, finite element models are established by using 3D deformable body unit, 3D deformable shell element and 3D de-formable beam element. The first order natural frequency of the track system is calculated based on eigenvalue method. To find outthe law, the evaluation of the vibration characteristics of the track is compared. The characteristics of different methods and thechoice of different methods in engineering are pointed out. By summarizing the conclusions that can guide the design, It aims, toprovide reference guidance for the calculation of track vibration characteristics and design of similar platform in the future.

Key words:eigenvalue method; first order natural frequency; overall vibration; local vibration; track