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An efficient wave based method for the mid-frequency transverse vibration analysis of a thermal beam with interval uncertainties

机译：一种高效的波动波段，用于间隔不确定性的热束的中频横向振动分析

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摘要

Wave Based Method (WBM) is an efficient method to analyze mid-frequency dynamic problems. This work extended the WBM to the transverse vibration analysis of a thermal beam with limited uncertain information. Novel wave functions and particular solution function for the thermal beam with deterministic parameters are derived to obtain the dynamic response. Then, by employing the interval perturbation method and sub-interval decomposition technique, the Sub-Interval Perturbation Wave Based Method (SIPWBM) is developed to analyze the uncertain propagation in thermal beams for the first time. Numerical simulations for thermal beams with deterministic parameters and interval parameters are conducted, respectively. The impacts of different thermal effects on deterministic dynamic response are investigated. Simulation results prove that the developed WBM could accurately predict the lowand mid-frequency transverse dynamic response of the thermal beam with deterministic parameters. The thermal stress effect plays a leading role in the low-frequency displacement frequency responses for beams under low-level temperature load. Whereas it is necessary to consider both the temperaturedependent material property effect and thermal stress effect in the mid-frequency transverse vibration analysis of thermal beams. By using the sub-interval decomposition technique and choosing a suitable sub-interval number, the SIPWBM could predict the bounds of the mid-frequency interval dynamic response accurately and efficiently. (C) 2021 Elsevier Masson SAS. All rights reserved.
机译：波基方法（WBM）是分析中频动态问题的有效方法。这项工作将WBM扩展到具有有限信息的热束的横向振动分析。推导出具有确定性参数的热束的新型波函数和特定解决功能，以获得动态响应。然后，通过采用间隔扰动方法和子间隔分解技术，开发了基于子间扰动波的方法（SIPWBM）以首次分析热束中的不确定传播。对具有确定性参数和间隔参数的热束的数值模拟。研究了不同热效应对确定性动态响应的影响。仿真结果证明，开发的WBM可以准确地预测具有确定性参数的热束的低兰中频横向动态响应。在低电平温度负载下，热应力效应在低频位移频率响应中起着主导作用。然而，有必要考虑热束的中频横向振动分析中的温度依赖性材料性能和热应力效应。通过使用子间隔分解技术并选择合适的子间隔数，SIPWBM可以精确且有效地预测中频间隔动态响应的边界。 （c）2021 Elsevier Masson SAS。版权所有。

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  • 来源
    《Aerospace science and technology》 |2021年第3期|106438.1-106438.11|共11页
  • 作者

    Chen Qiang; Ma Wenyi; Fei Qingguo; Devriendt Hendrik; Desmet Wim;

  • 作者单位

    Southeast Univ Sch Mech Engn Nanjing 211189 Peoples R China|Southeast Univ Jiangsu Engn Res Ctr Aerosp Machinery Nanjing 211189 Peoples R China;

    Southeast Univ Sch Mech Engn Nanjing 211189 Peoples R China|Southeast Univ Jiangsu Engn Res Ctr Aerosp Machinery Nanjing 211189 Peoples R China;

    Southeast Univ Sch Mech Engn Nanjing 211189 Peoples R China|Southeast Univ Jiangsu Engn Res Ctr Aerosp Machinery Nanjing 211189 Peoples R China;

    Katholieke Univ Leuven Dept Mech Engn B-3001 Leuven Belgium|Flanders Make DMMS Lab Lommel Belgium;

    Katholieke Univ Leuven Dept Mech Engn B-3001 Leuven Belgium|Flanders Make DMMS Lab Lommel Belgium;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Wave based method; Mid-frequency vibration; Uncertainty propagation; Thermal effect; Sub-interval decomposition;

    机译：基于波的方法;中频振动;不确定性传播;热效应;子间隔分解;
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