瑞利阻尼在Abaqus中的实现

Implementation of Rayleigh damping in Abaqus

为充分体现结构阻尼对结构振动响应的影响,在结构动力响应有限元分析中加入经典的瑞利阻尼,并在Abaqus中进行匀质梁的弯曲和轴向简谐振动分析,然后与结构动力学理论解进行对比,研究瑞利阻尼在Abaqus中的实现方法。结果表明:有限元动力响应分析结果与理论结果吻合良好,该方法可以准确实现在Abaqus中添加瑞利阻尼。

In order to fully reflect the influence of structural damping on structural vibration response,the classical Rayleigh damping is added into the structural dynamic response finite element analysis.The analysis of bending and axial harmonic vibration of homogeneous beam is carried out in Abaqus.By comparing with the theoretical solution of structural dynamics,the implementation method of Rayleigh damping in Abaqus is studied.The results show that the analysis results of finite element dynamic response agree well with the theoretical results,and the method can accurately add Rayleigh damping in Abaqus.