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Interval analysis of the wing divergence

机译:机翼发散的间隔分析

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摘要

In this paper the Taylor expansion (TE) is combined with the optimization and anti-optimization problems (OAP) solutions of parameterized interval analysis (PIA) to study the effect of structural uncertainties on the divergence of wing. Through a two-dimensional wing example, the TE + PIA + OAP method developed by this paper is compared with the classic interval analysis (CIA), the results show that the TE + PIA + OAP method can reduce overestimation in the CIA and TE method, and the interval of divergence dynamic pressure predicted by the TE + PIA + OAP method is as narrow as the one from the PIA + OAP methods, but the computation cost of the TE + PIA + OAP method is much lower. In addition an actual engineering example of forward swept wing with uncertain structural parameters is studied by the TE + PIA + OAP method to illustrate the capability to solve the real divergence problem of wing with uncertain structural parameters. (C) 2018 Elsevier Masson SAS. All rights reserved.
机译:本文将泰勒展开(TE)与参数化间隔分析(PIA)的优化和反优化问题(OAP)解决方案相结合,以研究结构不确定性对机翼散度的影响。通过二维机翼实例,将本文开发的TE + PIA + OAP方法与经典区间分析(CIA)进行了比较,结果表明,TE + PIA + OAP方法可以减少CIA和TE方法中的高估,TE + PIA + OAP方法预测的发散动压力的间隔与PIA + OAP方法预测的相差很小,但是TE + PIA + OAP方法的计算成本要低得多。此外,通过TE + PIA + OAP方法研究了结构参数不确定的前掠机翼的实际工程实例,以说明解决结构参数不确定的机翼实际发散问题的能力。 (C)2018 Elsevier Masson SAS。版权所有。

著录项

  • 来源
    《Aerospace science and technology》 |2018年第3期|17-21|共5页
  • 作者

    Li Yi; Wang Tianhong;

  • 作者单位

    Northwestern Polytech Univ, Sch Aeronaut, Xian 710072, Shaanxi, Peoples R China;

    Northwestern Polytech Univ, Sch Aeronaut, Xian 710072, Shaanxi, Peoples R China;

  • 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

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