基于新型粒子群算法的结构动力学热振模型修正
收稿日期: 2021-10-25
修回日期: 2022-02-11
录用日期: 2022-03-15
网络出版日期: 2022-03-22
基金资助
国家自然科学基金(12072153);江苏高等学校重点学术项目发展与机械结构力学与控制国家重点实验室研究基金(南京航空航天大学)(MCMS-I-0121G01)
Dynamics model updating of structures at high temperature based on novel particle swarm optimization algorithm
Received date: 2021-10-25
Revised date: 2022-02-11
Accepted date: 2022-03-15
Online published: 2022-03-22
Supported by
National Natural Science Foundation of China(12072153);the Priority Academic Program Development of Jiangsu Higher Education Institutions and the Research Fund of State Key Laboratory of Mechanics and Control of Mechanical Structures (Nanjing University of Aeronautics and astronautics)(MCMS-I-0121G01)
提出一种基于新型粒子群算法的结构动力学热振模型修正方法,并成功应用于高温环境下典型复杂多组件结构的模型修正问题。为了克服粒子群算法解决模型修正等非线性优化问题时早熟收敛的缺点,联合莱维飞行策略和正交学习方法提出莱维正交学习粒子群优化算法;将该新型方法和其他优化算法应用于修正轴系轴承-轴承座的等效刚度和阻尼参数进行对比分析,结果证明该新型算法具有更高的精度;针对典型复杂多组件结构在高温环境下的振动实验进行模型修正,修正后不同温度环境下各阶模态频率误差均下降到7%以内,有限元模型精度得到极大提高,表明该新型算法可以有效应用于工程实际。
王震宇 , 王计真 , 杨婧艺 , 何鹏远 , 潘成浩 , 周凌波 , 何成 , 何欢 . 基于新型粒子群算法的结构动力学热振模型修正[J]. 航空学报, 2023 , 44(7) : 226559 -226559 . DOI: 10.7527/S1000-6893.2022.26559
A dynamics model updating method for structures in high temperature environments based on a novel Particle Swarm Optimization (PSO) algorithm is proposed and successfully applied to the updating of the Finite Element (FE) model of a typical complex multi-component structure. The LOPSO algorithm was first designed by combining the Lévy flight strategy and the orthogonal learning method to overcome premature convergence while the PSO solves nonlinear optimization problems such as parameter identification and model updating. Then the proposed method was used to update the equivalent stiffness and damping parameters of shafting bearings. It is proved that the new algorithm has higher accuracy. Finally, we updated the FE model of a typical complex multi-component structure in high temperature environment based on the vibration experiment by the LOPSO method. After updating, the errors of the main modal frequencies in different temperature environments were reduced to less than 7%. The accuracy of the FE model was significantly improved, verifying the effectiveness of the proposed method and its applicability to engineering problems.
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