Study on flutter characteristics of NACA0012 flexible straight wing with high-aspect-ratio
采用三维雷诺平均N-S方程和S-A湍流模型求解展弦比为16的NACA0012弹性平直机翼的非定常气动力, 结合机翼动力学方程, 建立了机翼颤振时域分析方法。利用该方法对机翼的颤振特性、颤振过程中的变形和振动响应, 以及瞬时流场进行数值模拟和分析, 并研究材料刚度和密度对机翼颤振速度和频率的影响。结果表明, 由于展弦比较大, 且材质轻柔, 机翼会出现一定幅度的静弯曲变形。第二阶(垂向弯曲)和第三阶(扭转)振动模态的耦合作用是机翼发生颤振的原因, 且颤振频率介于这两阶模态固有频率之间。对比不同材料刚度和密度下机翼的颤振速度和频率, 发现材料刚度的增大会提高颤振速度和频率, 材料密度的增大会使颤振速...
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| Format: | Article |
| Language: | zho |
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EDP Sciences
2022-10-01
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| Series: | Xibei Gongye Daxue Xuebao |
| Subjects: | |
| Online Access: | https://www.jnwpu.org/articles/jnwpu/full_html/2022/05/jnwpu2022405p1071/jnwpu2022405p1071.html |
| _version_ | 1797642176167936000 |
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| author | YU Qiuyang LI Xinghua LI Xintao XU Shengjin |
| author_facet | YU Qiuyang LI Xinghua LI Xintao XU Shengjin |
| author_sort | YU Qiuyang |
| collection | DOAJ |
| description | 采用三维雷诺平均N-S方程和S-A湍流模型求解展弦比为16的NACA0012弹性平直机翼的非定常气动力, 结合机翼动力学方程, 建立了机翼颤振时域分析方法。利用该方法对机翼的颤振特性、颤振过程中的变形和振动响应, 以及瞬时流场进行数值模拟和分析, 并研究材料刚度和密度对机翼颤振速度和频率的影响。结果表明, 由于展弦比较大, 且材质轻柔, 机翼会出现一定幅度的静弯曲变形。第二阶(垂向弯曲)和第三阶(扭转)振动模态的耦合作用是机翼发生颤振的原因, 且颤振频率介于这两阶模态固有频率之间。对比不同材料刚度和密度下机翼的颤振速度和频率, 发现材料刚度的增大会提高颤振速度和频率, 材料密度的增大会使颤振速度先降低然后趋于不变, 颤振频率一直降低。 |
| first_indexed | 2024-03-11T13:56:25Z |
| format | Article |
| id | doaj.art-a1b408a338734a259f684cdc144db31b |
| institution | Directory Open Access Journal |
| issn | 1000-2758 2609-7125 |
| language | zho |
| last_indexed | 2024-03-11T13:56:25Z |
| publishDate | 2022-10-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Xibei Gongye Daxue Xuebao |
| spelling | doaj.art-a1b408a338734a259f684cdc144db31b2023-11-02T06:58:01ZzhoEDP SciencesXibei Gongye Daxue Xuebao1000-27582609-71252022-10-014051071107910.1051/jnwpu/20224051071jnwpu2022405p1071Study on flutter characteristics of NACA0012 flexible straight wing with high-aspect-ratioYU Qiuyang0LI Xinghua1LI Xintao2XU Shengjin3School of Aerospace Engineering, Tsinghua UniversitySchool of Science, Harbin University of Science and TechnologySchool of Aerospace Engineering, Tsinghua UniversitySchool of Aerospace Engineering, Tsinghua University采用三维雷诺平均N-S方程和S-A湍流模型求解展弦比为16的NACA0012弹性平直机翼的非定常气动力, 结合机翼动力学方程, 建立了机翼颤振时域分析方法。利用该方法对机翼的颤振特性、颤振过程中的变形和振动响应, 以及瞬时流场进行数值模拟和分析, 并研究材料刚度和密度对机翼颤振速度和频率的影响。结果表明, 由于展弦比较大, 且材质轻柔, 机翼会出现一定幅度的静弯曲变形。第二阶(垂向弯曲)和第三阶(扭转)振动模态的耦合作用是机翼发生颤振的原因, 且颤振频率介于这两阶模态固有频率之间。对比不同材料刚度和密度下机翼的颤振速度和频率, 发现材料刚度的增大会提高颤振速度和频率, 材料密度的增大会使颤振速度先降低然后趋于不变, 颤振频率一直降低。https://www.jnwpu.org/articles/jnwpu/full_html/2022/05/jnwpu2022405p1071/jnwpu2022405p1071.html大展弦比机翼颤振模态 |
| spellingShingle | YU Qiuyang LI Xinghua LI Xintao XU Shengjin Study on flutter characteristics of NACA0012 flexible straight wing with high-aspect-ratio Xibei Gongye Daxue Xuebao 大展弦比机翼 颤振 模态 |
| title | Study on flutter characteristics of NACA0012 flexible straight wing with high-aspect-ratio |
| title_full | Study on flutter characteristics of NACA0012 flexible straight wing with high-aspect-ratio |
| title_fullStr | Study on flutter characteristics of NACA0012 flexible straight wing with high-aspect-ratio |
| title_full_unstemmed | Study on flutter characteristics of NACA0012 flexible straight wing with high-aspect-ratio |
| title_short | Study on flutter characteristics of NACA0012 flexible straight wing with high-aspect-ratio |
| title_sort | study on flutter characteristics of naca0012 flexible straight wing with high aspect ratio |
| topic | 大展弦比机翼 颤振 模态 |
| url | https://www.jnwpu.org/articles/jnwpu/full_html/2022/05/jnwpu2022405p1071/jnwpu2022405p1071.html |
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