Frequency and time variable parametric forces in a generalized linear aero-elastic model with two degrees of freedom

Title:

Frequency and time variable parametric forces in a generalized linear aero-elastic model with two degrees of freedom

Creator:

Náprstek , Jiří and Pospíšil, Stanislav

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:79b79bc4-4771-4e72-a717-5a7011e35008
uuid:79b79bc4-4771-4e72-a717-5a7011e35008

Subject:

flutter derivatives, indicial functions, non-symmetric systems, and dynamic stability

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Behavior of slender aero-elastic systems in a sub-critical domain including position of the lowest critical state is commonly investigated using double degree of freedom (DDOF) linear model. The most frequently used are neutral models treating aero-elastic forces as certain constants corresponding to system parameters and stream velocity. Although this approach is working well, it shows a number of shortcomings. For this reason modeling by flutter derivatives or indicial functions has been launched. However, these two groups of models have been developed separately one from each other. It seems they are rather isolated until now. Moreover they mostly suffer from various gaps in mathematical formulations and further treatment. The paper tries to put all three groups together on one common basis and to demonstrate linkage of them. This approach allows formulate more sophisticated models combining main aspects of all groups in question keeping the DDOF basis. These models correspond by far better to results of wind channel and full scale measurements. and Obsahuje seznam literatury

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

355-367

Source:

Engineering mechanics: international journal for theoretical and applied mechanics | 2013 Volume:20 | Number:5

Harvested from:

CDK

Metadata only:

false