Title:
BLADE HIGH-RIGIDITY DESIGN METHOD BASED ON RANDOM ISOGEOMETRIC ANALYSIS
Document Type and Number:
WIPO Patent Application WO/2020/134388
Kind Code:
A1
Abstract:
Disclosed is a blade high-rigidity design method based on random isogeometric analysis. The method involves, firstly, according to a manufacturing condition and service environment for a blade, establishing random field models for a material attribute and external load of the blade; and on this basis, establishing, according to a high-rigidity design requirement and a lift-to-drag ratio constraint condition of the blade, an optimal design model for the blade, and solving the model. In a solving process, a random isogeometric analysis method is used to calculate the random displacement of the blade under the influence of the randomness of the material attribute and the external load, and also to calculate the maximum lift-to-drag ratio of a blade airfoil, and then calculate the suitability of an individual in a current population, such that a blade high-rigidity design on the premise of ensuring the lift-to-drag ratio is achieved. In the blade high-rigidity design method provided in the present invention, the randomness of the material attribute and external load of a blade is comprehensively considered, and a random isogeometric analysis method based on a random Krylov subspace base vector discrete scheme is used to calculate the random displacement of the blade, such that highly precise blade random displacement can be efficiently obtained.
Inventors:
CHENG JIN (CN)
YANG MINGLONG (CN)
LIU ZHENYU (CN)
YANG MINGLONG (CN)
LIU ZHENYU (CN)
Application Number:
PCT/CN2019/111694
Publication Date:
July 02, 2020
Filing Date:
October 17, 2019
Export Citation:
Assignee:
UNIV ZHEJIANG (CN)
International Classes:
G06F17/00
Foreign References:
| CN109766604A | 2019-05-17 | |||
| CN107908914A | 2018-04-13 | |||
| CN102322407A | 2012-01-18 | |||
| US20020065636A1 | 2002-05-30 |
Attorney, Agent or Firm:
HANGZHOU QIUSHI PATENT OFFICE CO., LTD. (CN)
Download PDF: