| 路森浩,顾乃建,武文华.基于贝叶斯推断的卫星螺栓连接结构动力学参数识别[J].,2023,63(3):221-230 |
| 基于贝叶斯推断的卫星螺栓连接结构动力学参数识别 |
| Identification of dynamic parameters of satellite bolt connection structures based on Bayesian inference |
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| DOI：10.7511/dllgxb202303001 |
| 中文关键词: 螺栓连接结构 Bouc-Wen模型 贝叶斯推断模型 非线性滞回 |
| 英文关键词: bolt connection structure Bouc-Wen model Bayesian inference model nonlinear hysteresis |
| 基金项目:国家重点研发计划资助项目(2021YFA1003501)；国家自然科学基金资助项目(U1906233)；山东省联合基金资助项目(2019JZZY010801)；深圳市自由探索类基础研究项目(2021Szvup021)；高等学校基本科研业务费专项资金资助项目(DUT22ZD209). |
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| 中文摘要: |
| 在卫星等航天器结构运行过程中，螺栓连接结构会导致卫星刚度损失和能量耗散．对于某卫星螺栓连接结构开展了含能量耗散与滞回效应的动力学参数识别分析方法研究．首先针对螺栓连接结构的力学特征给出了含动力学耗散的Bouc-Wen(B-W)模型，并推导其在不同荷载下的方程新式．进而分别构建了力锤激励冲击加载和激振器周期加载试验系统，基于贝叶斯推断模型开展了螺栓连接结构动力学参数反演识别研究，给出表征Bouc-Wen模型的螺栓连接结构动力学参数及其在周期荷载下的滞回曲线．最后，基于Bouc-Wen模型计算了不同荷载下卫星螺栓连接结构的加速度．通过计算方程新式计算数据与实测数据之间的均方误差对比两种方法的拟合程度，结果表明两者的均方误差较小，所提方法在解决卫星螺栓连接结构动力学参数识别方面具有可行性和准确性． |
| 英文摘要: |
| The bolt connection structure would lead to the loss of satellite stiffness and energy dissipation during the operation process of spacecraft such as satellite. The dynamic parameter identification method with energy dissipation and hysteretic effect of bolt connection structure of satellite is studied. Firstly, aiming at the dynamic characteristic of bolt connection structure, Bouc-Wen (B-W) model of bolt connection structure with dynamic dissipation is derived. A series of new forms of B-W model are given under different loads. Then, the hammer impact excitation loading and exciter periodic excitation loading testing systems are established respectively to carry out the dynamic parameter inversion identification of bolt connection structure based on Bayesian inference model. The dynamic parameters of Bouc-Wen model together with the hysteretic curve of blot connection structure are obtained under periodic loads. Finally, the accelerations of satellite bolt connection structure are calculated based on Bouc-Wen model under different loads. By calculating the mean squared errors between the calculated data of new form and the measured data, the compatibility degree of them is compared, the results show that the mean squared errors of the two methods are small, and the proposed method is feasible and accurate in solving the identification of dynamic parameters of satellite bolt connection structures. |
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