Application of Block Reduced Order Models in Wind-membrane Interaction

孙芳锦; 梁爽

doi:10.13409/j.cnki.jdpme.2015.03.004

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Application of Block Reduced Order Models in Wind-membrane Interaction

更新时间：2025-12-11

- Application of Block Reduced Order Models in Wind-membrane Interaction
- Vol. 35, Issue 3, Pages: 302-306+339(2015)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2015.03.004
  CLC： U383;TU312.1
- Published：2015
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[1]孙芳锦,梁爽.分块降阶模型及其在风与膜结构流固耦合计算中的应用[J].防灾减灾工程学报,2015,35(03):302-306+339.

孙芳锦, 梁爽. Application of Block Reduced Order Models in Wind-membrane Interaction[J]. 2015, 35(3): 302-306+339.
[1]孙芳锦,梁爽.分块降阶模型及其在风与膜结构流固耦合计算中的应用[J].防灾减灾工程学报,2015,35(03):302-306+339. DOI： 10.13409/j.cnki.jdpme.2015.03.004.

孙芳锦, 梁爽. Application of Block Reduced Order Models in Wind-membrane Interaction[J]. 2015, 35(3): 302-306+339. DOI： 10.13409/j.cnki.jdpme.2015.03.004.

摘要

提出一种分块降阶模型

将流固耦合体系看成由力模型和结构动力模型构成

力模型中作用于结构上的力由力幅和频率信号构成

考虑膜结构的非线性

对模型进行了非线性校正。校正时采用本征正交分解方法

对每一个模态利用其时间系数进行比例调整;最后将力模型输出结果输入到结构动力模型中

计算得到膜结构的风振响应。将降阶模型应用于风与膜结构的流固耦合分析中

计算得到膜结构风压系数、风振响应等参数

并与全阶模型进行了对比。结果表明

降阶模型可以准确预测膜结构的风致响应和风压系数

且计算效率大大提高。

Abstract

Considering the characteristics of wind-membrane interaction

a block reduced order model is proposed.The fluid-structure interaction is considered to be composed of force model and structural dynamic model.The force model aims at structural force exerted by fluid

including force amplitude and frequency

which can be fitted by inflow conditions.Considering nonlinearities of membrane structures

consider that frequency error correlates with modes

and POD is utilized to adjust the time coefficients of each mode to obtain the nonlinear corrector.The output of the force model inputs into the structural model to obtain the membrane responses.The block reduced order model is applied to a wind-membrane interaction analysis.Wind-induced responses

wind pressure coefficients

and efficiency are computed and compared with those from full-order model.The results show that the proposed reduced order model can accurately predict wind-induced responses and wind pressure coefficients and the computing efficiency is greatly improved.

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references

降阶模型及其在大跨度屋盖结构风振中的应用研究 [J]. 孙芳锦,殷志祥,曹启坤,张大明. 工程力学 . 2008(06)

Using proper orthogonal decomposition to model off-reference flow conditions [J] . Brian A. Freno,Thomas A. Brenner,Paul G.A. Cizmas. International Journal of Non-Linear Mechanics . 2013

Frequency-domain subspace identification for nonlinear mechanical systems [J] . J.P. No?l,G. Kerschen. Mechanical Systems and Signal Processing . 2013

Effective conductivity by stochastic reduced order models （SROMs） [J] . Mircea Grigoriu. Computational Materials Science . 2010 (1)

Multi-material ALE computation in inertial confinement fusion code CHIC [J] . Computers and Fluids . 2010 (1)

Reduced order models for random functions. Application to stochastic problems [J] . M. Grigoriu. Applied Mathematical Modelling . 2007 (1)

Wind pressures acting on low-rise buildings [J] . Yasushi Uematsu,Nicholas Isyumov. Journal of Wind Engineering & Industrial Aerodynamics . 1999 (1)

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