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| 陀螺转子动力学系统的时间有限元内点法 | |
| 引用本文： | 隋永枫,,潘慧斌,,隋艺,,钟万勰.陀螺转子动力学系统的时间有限元内点法[J].振动与冲击,2020,39(14):75-79. |
| 作者姓名： | 隋永枫 潘慧斌 隋艺 钟万勰 |
| 作者单位： | 1.杭州汽轮动力集团有限公司中央研究院，杭州310022； 2.大连理工大学工业装备结构分析国家重点实验室，辽宁大连116023； 3.浙江省燃气涡轮机械制造业创新中心，杭州310022； 4.浙江燃创透平机械股份有限公司，杭州311199 |
| 摘 要： | 将保辛的时间有限元法(FEM)应用于陀螺转子动力学系统,给出了陀螺转子动力学系统时间有限元法的时间单元刚度阵列式和非齐次外力的表达式,以及辛时间传递矩阵。在此基础上,提出了精度更高的时间有限元内点法(IDTFEA),该方法既继承了时间有限元保辛的优良特性,又大大提高了数值计算精度,具有非常明显的优越性。算例给出了该方法和Newmark方法的比较结果,表明该方法的优越性。 |
| 关 键 词： | 时间有限元 辛 陀螺系统 转子动力学 |
Interval combination method of time domain finite element analysis for gyroscopic systems |
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| SUI Yongfeng,,PAN Huibin,,SUI Yi,,ZHONG Wanxie.Interval combination method of time domain finite element analysis for gyroscopic systems[J].Journal of Vibration and Shock,2020,39(14):75-79. | |
| Authors: | SUI Yongfeng PAN Huibin SUI Yi ZHONG Wanxie |
| Affiliation: | 1.Central Research Institute, Hangzhou Steam Turbine & Power Group Co., Ltd., Hangzhou 310022, China; 2.State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023, China; 3.Zhejiang Gas Turbine Innovation Center, Hangzhou 310022, China; 4.Zhejiang Rancon Turbine Machinery Co., Ltd., Hangzhou 311199, China |
| Abstract: | Based on the variational principle, time domain finite element method of gyroscopic systems is presented and applied to gyroscopic rotor dynamics. The corresponding trial function matrix, element stiffness matrix and inhomogeneous force are given. The interval combination method of time domain FEM is subsequently proposed which has higher efficiency. This method inherits the property of symplectic conservation and enhances computational accuracy. The examples comparing the numerical results obtained from different methods: time domain FEM and Newmark method demonstrate the advantages of time domain FEM. |
| Keywords: | Time domain FEM Symplectic Gyroscopic system Rotor dynamics |
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